Peavey Music Mixer X Monitor User Manual
X-Monitor  
Mixing Console  
S E R I E S  
Owner’s Manual  
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Table of contents  
mono input module  
p. 6  
1
Mic and line inputs  
group module  
p. 20  
p. 28  
2
3
master section  
microprocessor control p. 48  
4
5
power supply  
p. 66  
p.3  
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182  
G C  
G C  
p.4  
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How to use this manual  
Format  
This manual uses a format that is intended to be easy to read, yet technical for those who need to  
know all the details. For feature descriptions, this is done by devoting the left side of each page to 1)  
an overall module picture, 2) a block diagram, and 3) a control closeup.These images all pertain to the  
features and control descriptions on the right side of the page. Also, for certain features like the micro-  
processor system and the solo system that appear over and over again, references are made to sec-  
tions devoted to these features.  
The intention is to make the manual easy to read while including all the technical details needed for  
getting the most out of the X-Monitor console, a flexible and feature-rich addition to Crest Audio's grow-  
ing line of audio mixing console products.  
Conventions  
Control Icons  
This manual uses little pictures, or icons to illustrate what the control descriptions are referring to.This  
makes it possible to avoid redundant wording and makes the control descriptions clear.  
Switch in the UP, non-activated position  
Switch in DOWN, activated position  
Switch that illuminates when in the DOWN position  
Momentary switch that illuminates when activated  
L
E
D
Illuminated LED, indicating that its associated feature is activated  
Potentiometer  
Standard 1/4" TRS jack (used for line level inputs and insert sends)  
1/4" TRS jack with normal switching (used on insert returns)  
Female XLR input jack  
Male XLR output jack  
p.5  
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1
Mono input module  
X-Monitor owner’s manual  
Input  
Module  
Block diagram  
+48V  
26dB  
PAD  
BALANCED  
IN  
GAIN  
15 - 70 DB  
HPF  
20 - 400HZ  
LINE  
Ø
LINE  
SW  
P
XFORMER  
OPTION  
LINE  
SW  
SPLIT  
OUT  
HPF  
INPUT  
PREAMP  
PIN 1 LIFT  
Controls  
p.6  
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1
Mono input module  
Features  
Phantom power +48V  
The 48V switch should  
not be engaged when  
using standard (dynamic)  
microphones, or other  
sources that do not use  
phantom power.  
a
48 volts DC is applied to pins 2 and 3 on the mic-input XLR connector. This option  
is used with condenser microphones and active direct boxes that require an external DC  
voltage (phantom power) in order to operate.  
Pad  
The mic-input signal is attenuated by 28dB to prevent some signals (e.g. kick drum or  
lead vocal) from overloading the preamp stage.The pad is used to bring a hot mic-input sig-  
nal down to a controllable level.The pad is not functional when the LINE switch is depressed.  
Line  
The input preamp circuit is set up to accept a mic-level signal. This signal is brought in  
via the XLR mic-input connector located on the rear panel.The 1/4"TRS input jack is dis-  
abled.  
The input preamp circuit is set up to accept a line-level signal from either the XLR  
mic-input connector or the 1/4"TRS input jack,both located on the rear panel.When a plug  
is inserted into the 1/4"TRS input jack, the XLR mic-input connector is disabled.  
If the 48V phantom  
power switch is  
engaged, depressing this  
Line switch disconnects  
phantom power from the  
mic input XLR.  
+
+
Polarity reverse—ø  
When similar signals  
from different chan-  
nels are combined, phase  
cancellations can occur.  
This feature is used for correcting or minimizing polarity and phase related errors. For  
example, occasionally a balanced input connection is reverse-wired before it gets to the  
mixing console.This can happen in microphones, or in snake line interfaces. By using the  
polarity reverse feature, this type of error can be corrected.  
Reversing the polarity of an  
input signal often corrects  
such phasing errors.  
Normal polarity  
Polarity inverted  
p.7  
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1
Mono input module  
X-Monitor owner’s manual  
Input  
Module  
Block diagram  
+48V  
26dB  
PAD  
BALANCED  
IN  
GAIN  
15 - 70 DB  
HPF  
20 - 400HZ  
LINE  
Ø
LINE  
SW  
P
XFORMER  
OPTION  
LINE  
SW  
SPLIT  
OUT  
HPF  
INPUT  
PREAMP  
PIN 1 LIFT  
Controls  
p.8  
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1
Mono input module  
Features  
If the channel peak  
LED is illuminated,  
first try lowering  
Gain  
+
The Input gain control range is closely related to the status of the PAD switch and the LINE  
switch. In order to establish proper gain structure in the console, input gain settings must  
be set correctly.  
the input gain control.  
Only when this method is  
unsuccessful should the pad  
switch be engaged.  
LINE—switch-up  
PAD—switch-up  
12 to 72dB of gain can be added the mic-input signal.  
The impedance at the input XLR is 4kΩ.  
LINE—switch-up  
PAD—switch-down  
-16 to 44dB of gain can be added to the mic-input signal.  
The impedance at the input XLR is 4kΩ.  
LINE—switch-down  
PAD—switch-up or -down  
-10 to 45dB of gain can be added the line-input signal.  
The impedance at the input XLR and input 1/4"TRS is 20kΩ.  
High-pass filter—HPF  
Proper use of the high-pass filter reduces or eliminates unwanted low frequencies without  
substantially affecting the program material.Quite often such unwanted low frequencies are  
included with in-coming mic- or line-input signals. For example, stage rumble or wind can  
be picked up through vocal mics.The slope of the high-pass filter is -12dB per octave.  
HPF  
High-pass filter is on.  
HPF—variable control  
When the high-pass filter is on, this control selects a frequency between 20Hz and  
400Hz as the point where attenuation begins.  
p.9  
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1
Mono input module  
X-Monitor owner’s manual  
Input  
Module  
Block diagram  
X-MONITOR INPUT  
(24 32 OR 40 FITTED)  
GAIN  
- 70 DB  
HPF  
20 - 400HZ  
LEVEL FREQ LEVEL FREQ LEVEL LEVEL  
EQ  
ON  
FADER AMP  
HF  
HI MID  
LOW MID  
LF  
12 KHZ  
400 - 8 KHZ  
80 - 2 KHZ  
100 HZ  
HPF  
+10  
FOUR BAND EQ  
NPUT  
REAMP  
INPUT METER  
-6 +8 PEAK  
PRE  
SOUR  
MUTE  
SIG  
0
YES  
NO  
EQ  
FDR  
PRE  
SOURCE  
SELECT  
PRE  
FADER  
PRE-SOURCE  
AMP  
Controls  
p.10  
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1
Mono input module  
Input EQ features  
Many audio signals coming into the console require some degree of corrective eq in order  
to be part of a good sounding mix.The X-Monitor Input EQ allows the user to tailor the  
incoming sound.  
The input EQ consists of four bands:high,high-mid,low-mid,and low. The high band is shelv-  
ing, the low band offers shelving cut with a bell boost. The two mid-bands are bell shaped  
with a Q of 2 and a generous overlap of adjacent operating frequencies. An independent,  
variable high pass filter provides additional problem-solving flexibility.  
High frequency—HF  
Boost / Cut 15dB boost and cut at 12 kHz. Shelving eq.  
High mid—HM  
Boost / Cut 15dB boost and cut with a Q of 2.  
Frequency Continuously sweepable between 400 Hz and 8 kHz.  
Low mid—LM  
Boost / Cut 15dB boost and cut with a Q of 2.  
Frequency Continuously sweepable between 100 Hz and 2 kHz.  
Low frequency—LF  
Boost / Cut 15dB boost and cut at 100 Hz. Bell boost / Shelving cut.  
Eq on  
Equalizer is on. This switch is used to activate the EQ section and can be used to make  
A/B comparisons between "flat" and eq'd signals.  
p.11  
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1
Mono input module  
X-Monitor owner’s manual  
Input  
Module  
Controls  
Block diagram  
LEVEL  
TO  
NEXT  
MODULE  
EQ  
ON  
MUTE  
FADER AMP  
LF  
100 HZ  
MUTE  
AND  
SOLO  
CTRL  
+10  
SAFE  
PREVIEW  
1 OF 4  
CIRCUITS  
FROM  
PRE  
INPUT CHAN  
PREV  
GROUP SENDS  
1 THRU 12  
SOURCE  
MICRO  
INTERFACE  
CARD  
K
MODULE  
NO  
YES  
1-4  
PRE  
MUTE ?  
EQ  
EQ  
FDR  
1 - LEV  
MIX 1  
PRE  
SOURCE  
SELECT  
2 - PAN  
MIX 2  
PRE-SOURCE  
AMP  
1-2 LEV/PAN CTRL  
3 - LEV  
4 - PAN  
FDR  
MIX 3  
MIX 4  
PRE  
DIR OUT  
SELECT  
POST  
3-4 LEV/PAN CTRL  
5-8  
PRE  
5 - LEV  
6 - PAN  
MIX 5  
MIX 6  
5-6 LEV/PAN CTRL  
7 - LEV  
8 - PAN  
MIX 7  
MIX 8  
ELECT  
SWITCH  
1/4” TRS  
JACK  
XLR  
JACK  
OBE  
FRANK  
H
7-8 LEV/PAN CTRL  
9-12  
PRE  
9 - LEV  
T 0 VU  
S (XLR JACKS)  
MIX 9  
10 - PAN  
MIX 10  
PUT, PIN 1 FOR GND  
ERSE  
9-10 LEV/PAN CTRL  
LEGENDS  
11 - LEV  
12 - PAN  
MIX 11  
MIX 12  
11-12 LEV/PAN CTRL  
p.12  
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1
Mono input module  
Mix send features  
The X-Monitor input strip has twelve Mix sends. Pre/Post fader switching is done in three  
groups of four, 1 through 4, 5 through 8, and 9 through 12.These Mix sends are routed to  
their corresponding outputs for creating up to twelve individual mono monitor mixes.They  
can also be configured as stereo pairs,creating up to six stereo mixes.When configured for  
stereo operation, the odd numbered pot becomes the stereo level control and the even  
numbered pot becomes the pan control. Stereo configuration is done in stereo pairs (1&2,  
3&4, 5&6...) and is selected in the Group output section (see Group output section for  
more information.  
Mix Sends 1-4, 5-8, 9-12  
These knobs adjust the amount of signal sent to the twelve outputs.Unity gain occurs  
at the the zero (1 - 2 o’clock) setting.  
In mono mode, each control independently determines the send level for the respective  
mix. When stereo mode is selected,the top (odd numbered) control sets signal level while  
the bottom (even numbered) control pans the signal between odd and even group buses  
(odd = left, even = right).  
With a FOH Console,  
it's typical to make  
+
Aux sends Post-fader  
Mix PRE switches 1-4, 5-8, 9-12  
for driving effects, and Pre-  
fader when used for moni-  
tors. With a Stage Monitor  
Console such as the X-  
Monitor, all Mix Sends are  
The PRE switches determine the source for the three groups of four MIX sends.The sig-  
nal that these switches use for the PRE setting can be further defined by changing the posi-  
tion of a couple of internal jumpers. See INTERNAL JUMPER OPTIONS.  
normally set for Post-Fader;  
the Engineer uses the  
Channel fader to control the  
level to all mixes.  
MIX SENDS are post-insert, post-eq, post-mute, post-fader  
MIX SENDS are post-insert, post-eq, post-mute, pre-fader  
Safe preview  
L E D  
Safe Preview LED  
See LOCAL MICROPROCESSOR CONTROL section  
Mute  
Mute switch  
See LOCAL MICROPROCESSOR CONTROL section  
p.13  
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1
Mono input module  
X-Monitor owner’s manual  
Input  
Module  
Controls  
Block diagram  
LEVEL  
TO  
NEXT  
MODULE  
EQ  
ON  
MUTE  
FADER AMP  
LF  
100 HZ  
MUTE  
AND  
SOLO  
CTRL  
+10  
SAFE  
PREVIEW  
1 OF 4  
CIRCUITS  
FROM  
PRE  
INPUT CHAN  
PREV  
GROUP SENDS  
1 THRU 12  
SOURCE  
MICRO  
INTERFACE  
CARD  
K
MODULE  
NO  
YES  
1-4  
PRE  
MUTE ?  
EQ  
EQ  
FDR  
1 - LEV  
MIX 1  
PRE  
SOURCE  
SELECT  
2 - PAN  
MIX 2  
PRE-SOURCE  
AMP  
1-2 LEV/PAN CTRL  
3 - LEV  
4 - PAN  
FDR  
MIX 3  
MIX 4  
PRE  
DIR OUT  
SELECT  
POST  
3-4 LEV/PAN CTRL  
5-8  
PRE  
5 - LEV  
6 - PAN  
MIX 5  
MIX 6  
5-6 LEV/PAN CTRL  
7 - LEV  
8 - PAN  
MIX 7  
MIX 8  
ELECT  
SWITCH  
1/4” TRS  
JACK  
XLR  
JACK  
OBE  
FRANK  
H
7-8 LEV/PAN CTRL  
9-12  
PRE  
9 - LEV  
T 0 VU  
S (XLR JACKS)  
MIX 9  
10 - PAN  
MIX 10  
PUT, PIN 1 FOR GND  
ERSE  
9-10 LEV/PAN CTRL  
LEGENDS  
11 - LEV  
12 - PAN  
MIX 11  
MIX 12  
11-12 LEV/PAN CTRL  
p.14  
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1
Mono input module  
Level meter features  
Level meter  
L E D  
L E D  
L E D  
L E D  
L E D  
Each input includes a five-segment LED meter for visually moni-  
toring signal levels.This is essential for setting up and maintaining proper gain structure.  
Peak indicator—PK  
L E D  
The input signal is monitored at several points throughout the channel.These points  
are the mic preamp, the EQ stage and the fader stage. Overload at any of these stages will  
cause the red peak-LED to light.  
The channel gain should reduced if this occurs.  
Signal level LEDs  
L E D  
These three LEDs light up at +8—yellow,0—green,and -6 dB—green.This level range  
-6 to +8 is the optimum operating range. Compressed or relatively constant signals should  
remain close to 0.  
Signal present indicator—SIG  
L E D  
This green-LED varies in brightness in response to signal levels between -40 dB and -  
6 dB.  
p.15  
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1
Mono input module  
X-Monitor owner’s manual  
Input  
Module  
Controls  
Block diagram  
LEVEL  
TO  
NEXT  
MODULE  
EQ  
ON  
MUTE  
FADER AMP  
LF  
100 HZ  
MUTE  
AND  
SOLO  
CTRL  
+10  
SAFE  
PREVIEW  
1 OF 4  
CIRCUITS  
FROM  
PRE  
INPUT CHAN  
PREV  
GROUP SENDS  
1 THRU 12  
SOURCE  
MICRO  
INTERFACE  
CARD  
K
MODULE  
NO  
YES  
1-4  
PRE  
MUTE ?  
EQ  
EQ  
FDR  
1 - LEV  
MIX 1  
PRE  
SOURCE  
SELECT  
2 - PAN  
MIX 2  
PRE-SOURCE  
AMP  
1-2 LEV/PAN CTRL  
3 - LEV  
4 - PAN  
FDR  
MIX 3  
MIX 4  
PRE  
DIR OUT  
SELECT  
POST  
3-4 LEV/PAN CTRL  
5-8  
PRE  
5 - LEV  
6 - PAN  
MIX 5  
MIX 6  
5-6 LEV/PAN CTRL  
7 - LEV  
8 - PAN  
MIX 7  
MIX 8  
ELECT  
SWITCH  
1/4” TRS  
JACK  
XLR  
JACK  
OBE  
FRANK  
H
7-8 LEV/PAN CTRL  
9-12  
PRE  
9 - LEV  
T 0 VU  
S (XLR JACKS)  
MIX 9  
10 - PAN  
MIX 10  
PUT, PIN 1 FOR GND  
ERSE  
9-10 LEV/PAN CTRL  
LEGENDS  
11 - LEV  
12 - PAN  
MIX 11  
MIX 12  
11-12 LEV/PAN CTRL  
p.16  
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1
Mono input module  
Bus assignment features  
In addition to providing full variable send capabilities in the Mix section, the X-Monitor also  
offers audio grouping facilities for sending input signals to the output matrix section, and  
directly to the A and B output masters for creating additional mixes. All assignments are  
normally derived Post-fader(post-eq and post-mute).  
Bus assignments 13, 14, 15 & 16  
The input signal is assigned to Buses 13 thru 16 which feed Matrix 1 - 4, located above  
the master control section.The feed to Buses 13-16 is normally Post-fader.All Bus 13-16  
sends (from Inputs and Groups) can be globally switched to Pre-fader by using the 13-16  
PRE switch, located in the Master section.  
A Bus assignment  
The Input signal is assigned to the main A output bus.This feed is always Post-fader.  
B Bus assignment  
The Input signal is assigned to the main B output bus.This feed is always Post-fader.  
Input fader  
The 100mm channel fader is the primary level control for all Post-fader signals being sent  
to any of the console’s mix buses.The fader offers greater than 90dB of attenuation and up  
to 10dB of boost . Normal operation is between -10 and 0.  
Solo switch  
Pressing this momentary switch will include (illuminate) or exclude (not-illuminated)  
the channel from the consoles solo system.See Master Control Section for information on  
Solo options.  
p.17  
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1
Mono input module  
X-Monitor owner’s manual  
X-Monitor rear-view (28 channel, 40 position frame shown)  
Input  
Module  
X-Monitor  
Lamp  
Dim  
To Meter Bridge  
Matrix  
4
Matrix  
3
Matrix  
2
Matrix  
1
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Ext  
In  
Ext  
In  
Ext  
In  
Ext  
In  
12  
Group Out  
11  
Group Out  
10  
Group Out  
9
8
7
6
5
4
3
2
1
Group Out  
Group Out  
Group Out  
Group Out  
Group Out  
Group Out  
Group Out  
Group Out  
Group Out  
Out  
Out  
Out  
Out  
S
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3
2
1
12  
11  
10  
9
8
7
6
5
4
3
2
1
Insert  
Send  
Insert  
Send  
Insert  
Send  
Insert  
Send  
S
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S
S
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S
S
S
R
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Insert  
Insert  
Insert  
Return  
Insert  
Return  
Pin  
1
Lift  
Pin  
1
Lift  
Pin  
1
Lift  
Pin  
1
Lift  
Pin  
1
Lift  
Pin  
1
Lift  
Pin  
1
Lift  
Pin  
1
Lift  
Pin  
1
Lift  
Pin  
1
Lift  
Pin  
1
Lift  
Pin  
1
Lift  
Pin  
1
Lift  
Pin  
1
Lift  
Pin  
1
Lift  
Pin  
1
Lift  
Pin  
1
Lift  
Pin  
1
Lift  
Pin  
1
Lift  
Pin  
1
Lift  
Pin  
1
Lift  
Pin  
1
Lift  
Pin  
1
Lift  
Pin  
1
Lift  
Return  
Return  
R
t
R
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R
t
R
t
R
t
R
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R
t
R
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R
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R
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R
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R
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Monitor  
Monitor  
Main  
Main  
n
n
n
n
n
n
n
n
n
n
n
n
Out  
Out  
Out  
B
Out  
A
R
L
Bal Input  
Bal Input  
Bal Input  
Bal Input  
Bal Input  
Bal Input  
Bal Input  
Bal Input  
Bal Input  
Bal Input  
Bal Input  
Bal Input  
Bal Input  
Bal Input  
Bal Input  
Bal Input  
Bal Input  
Bal Input  
Bal Input  
Bal Input  
Bal Input  
Bal Input  
Bal Input  
Bal Input  
Local Rtn 12  
Local Rtn 11  
Local Rtn 10  
Local Rtn  
9
Local Rtn  
Common  
8
Local Rtn  
Common  
7
Local Rtn  
6
Local Rtn  
5
Local Rtn  
4
Local Rtn  
3
Local Rtn  
2
Local Rtn  
1
TB  
Ext  
TB  
In  
Insert  
Send  
Insert  
Send  
Out  
T= OUT  
R=  
S= GND  
+
T= IN  
R= IN  
S= GND  
+
2
1
1= GND  
+
–
1
2
1= GND  
2= OUT  
3= OUT  
DC IN  
3
2= IN  
3= IN  
3
+
–
G
COMP  
–
Split Out  
Split Out  
Split Out  
Split Out  
Split Out  
Split Out  
Split Out  
Split Out  
Split Out  
Split Out  
Split Out  
Split Out  
Split Out  
Split Out  
Split Out  
Split Out  
Split Out  
Split Out  
Split Out  
Split Out  
Split Out  
Split Out  
Split Out  
Split Out  
In  
•
MIDI  
•
Out  
Return  
R
Return  
L
1= +12V  
2= +18V  
3= AGND  
4= AGND  
5= DGND  
6= +48V  
7= –18V  
Insert  
Return  
Insert  
Return  
XLR Female  
XLR Male  
1/4” Output  
1/4” Input  
1
2
7
3
4
5
Mic In  
Talkback In  
Split Out  
Main Out  
Group Out  
Matrix Out  
Monitor Out  
Talkback Out  
Alt Output  
Insert Send  
Ext Input  
Local Rtn  
Insert Rtn  
Common Rtn  
Ext Mon  
Input  
R
Ext Mon  
Input  
L
6
Alt  
Out  
B
Alt  
Out  
A
X–Monitor Master  
C
X–Monitor Group 9–12  
C
X–Monitor Group 5–8  
C
X–Monitor Group 1–4  
C
X–Monitor Input  
C
X–Monitor Input  
C
X–Monitor Input  
C
X–Monitor Input  
C
X–Monitor Input  
C
X–Monitor Input  
C
master  
groups  
mono inputs  
Block diagram  
POST  
FADER  
X-MONITOR INPUT  
(24 32 OR 40 FITTED)  
R
CONTROL  
C
+48V  
PRE-FADER  
POST-FADER  
SOLO LEFT  
SOLO CONTROL  
& SWITCHING  
5
SOLO RIGHT  
SOLO  
26dB  
PAD  
BALANCED  
IN  
GAIN  
HPF  
LEVEL FREQ LEVEL FREQ LEVEL LEVEL  
TO  
NEXT  
15 - 70 DB  
20 - 400HZ  
LINE  
Ø
MODULE  
LINE  
SW  
P
EQ  
ON  
XFORMER  
OPTION  
MUTE  
FADER AMP  
HF  
HI MID  
LOW MID  
LF  
MUTE  
AND  
LINE  
SW  
SPLIT  
OUT  
12 KHZ  
400 - 8 KHZ  
80 - 2 KHZ  
100 HZ  
HPF  
SOLO  
CTRL  
+10  
FOUR BAND EQ  
INPUT  
PREAMP  
SAFE  
PREVIEW  
1 OF 4  
CIRCUITS  
PIN 1 LIFT  
INPUT METER  
FROM  
PREV  
MODULE  
PRE  
INPUT CHAN  
GROUP SENDS  
1 THRU 12  
SOURCE  
MUTE ?  
MICRO  
INTERFACE  
CARD  
SIG  
-6  
0
+8 PEAK  
INSERT SEND  
NO  
YES  
1-4  
GC  
PRE  
EQ  
EQ  
FDR  
1 - LEV  
MIX 1  
PRE  
SOURCE  
SELECT  
2 - PAN  
MIX 2  
PRE  
PRE-SOURCE  
AMP  
FADER  
1-2 LEV/PAN CTRL  
3 - LEV  
4 - PAN  
BAL INSERT RTN  
DIRECT OUT  
POST  
FADER  
FDR  
MIX 3  
MIX 4  
PRE  
GC  
DIR OUT POST  
SELECT  
3-4 LEV/PAN CTRL  
5-8  
PRE  
5 - LEV  
Dir Out  
Dir Out  
Insert  
Dir Out  
Insert  
Dir Out  
Insert  
Rear Connector Panel  
Insert  
S
e
n
d
S
e
n
d
S
e
n
d
S
e
n
d
R
t
R
t
R
t
R
t
n
n
n
n
Pin 1 Lift  
Bal Input  
Pin 1 Lift  
Bal Input  
Pin 1 Lift  
Pin 1 Lift  
Bal Input  
Bal Input  
Split Out  
Split Out  
Split Out  
Split Out  
X–Monitor Input  
C
p.18  
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1
Mono input module  
Rear panel features  
Direct out 1/4"TRS jack  
+
T= OUT  
R= G COMP  
S= GND  
The input channel's signal is available at this output jack.The D.O.signal is derived  
Post-fader (post-eq and post-mute).This output jack is ground-compensated.  
Insert points  
Separate 1/4"TRS jacks provide the facilities for inserting an external signal processor into  
the signal path of the input channel.  
Insert send  
+
T= OUT  
R= G COMP  
S= GND  
This jack serves as an output for connection to the input of a signal processor.  
The signal is derived after the mic preamp and HPF but before the eq section.Plugging a 1/4"  
TRS plug into this jack does not break the signal flow of the channel.This output jack is  
ground-compensated.  
Insert return  
The output of a signal processor is fed to this jack. It can accept a balanced or  
unbalanced signal and is located pre-eq. Plugging a 1/4" TRS plug into this jack breaks the  
normal signal flow of the channel.  
Passive splitter features  
The input of the X-Monitor includes a simple passive splitter for running input signals par-  
allel to another desk,typically a front-of-house console.In most cases this can eliminate the  
need for a separate splitter box.  
Pin 1 lift  
When this button is depressed, the XLR Mic-In and Splitter-Out Pin-1 connection is  
isolated from the chassis ground of the console.The Pin-1connection is maintained between  
the two jacks, but is isolated from the mixer ground.  
NOTE: When the Pin-1 Lift switch is depressed, the phantom power (+48V) from the X-  
Monitor won’t function for that XLR input. Phantom power needs the Pin-1 ground con-  
nection for the return path for the +48 volts.  
Balanced Input XLR connector—Bal In  
This balanced female XLR (Pin 2 Hot) accepts a low-impedance microphone signal,or  
a line-level signal, depending on position of the LINE switch on the front panel.  
Splitter Out  
This male XLR allows the channel input to be patched to another piece of audio  
equipment, such as a front-of-house console. It is simply a parallel connection of whatever  
is plugged into the Input XLR.  
NOTE:All pins (1,2,3) are wired in parallel with the corresponding pins of the female XLR.  
The Pin-1 Lift does NOT disconnect any of these parallel connections.  
p.19  
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2
Output groups  
Controls  
X-Monitor owner’s manual  
Group  
Module Pair  
Block diagram  
GROUP OUT  
X-MONITOR GROUP  
(1 OF 12 SHOWN)  
GROUP  
( TO METERBRIDGE )  
GROUP PRE FDR  
POST FDR  
PEAK  
Ø
GROUP  
FADER AMP  
BAL OUT  
GRP PRE  
FADER  
GRP POST  
FADER  
TB TO  
GROUP  
HPF  
20 - 400HZ  
+10  
TB  
FEED  
SIGNAL  
PRESENT  
XFORMER  
OPTION  
GROUP  
MUTE  
MIX  
1 TO 12  
HPF  
GC  
∑
GROUP  
MIX AMP  
F
LEV  
F
Q
LEV  
F
Q
LEV  
F
Q
LEV  
F
LEV  
GROUP  
INSERT SEND  
EQ  
ON  
GROUP PRE FDR  
POST FDR  
SOLO CONTROL  
& SWITCHING  
LOC RTN PRE  
POST  
HF  
2-16K  
HI MID  
400 TO 8K  
MID  
200 TO 4K  
LO MID  
100 TO 2K  
LF  
40 TO 800  
BAL  
INSERT RTN  
GROUP  
RETURN  
(TO EQ)  
GROUP FIVE BAND EQ  
GROUP  
SOLO  
LOCAL RTN  
SOLO  
MIX 13-16  
TO  
MAIN RIBBON:  
TO MIX AMPS  
& PRE CTRL  
MUTE IF SET PRE ?  
YES  
INPUT  
MICRO  
CARDS  
GROUP  
MICRO  
INTER-  
FACE  
GROUP  
ASSIGN  
NO  
TO MIXES  
GROUP  
MUTE  
13 THRU 16  
CARD  
13  
GRP POST  
FADER  
GROUP  
+6  
MIX 13  
MIX 14  
MIX 15  
MIX 16  
MUTE  
GRP PRE  
FADER  
LOC RTN  
PRE  
14  
15  
16  
SAFE  
PREVIEW  
LOCAL  
RETURN  
MUTE  
SOLO  
AND  
LEVEL  
LOC RTN  
POST  
+6  
STEREO  
CTRL  
TO GROUP  
MIX AMP  
LOCAL RTN  
MUTE  
LOCAL RTN  
MUTE  
13-16 PRE CTRL  
SAFE  
PREVIEW  
( FROM MASTER 2 )  
A
MIX A  
B
COMMON  
RETURN  
1 OF 4  
CIRCUITS  
SHOWN  
LEFT  
IN  
COMMON RTN  
MUTE  
FROM  
MASTER  
MICRO  
CARD  
MIX B  
COM RTN  
POST  
LEVEL  
COMMON RTN  
GROUP ASSIGN  
TO MIXES A & B  
SAFE  
PREVIEW  
FEED L & R  
FROM  
+6  
TO GROUP  
MIX AMP  
MASTERS 1 & 2  
RIGHT  
IN  
STEREO  
PAIR  
WHEN SELECTED FOR STEREO PAIR OPERATION:  
CORRESPONDING INPUT SEND PAIR IS RECONFIGURED  
FOR LEV/PAN OPERATION (ODD IS LEV, EVEN IS PAN).  
GROUP SOLO IS CHANGED FROM MONO TO STEREO:  
ODD GRP SOLOS TO LEFT, EVEN GRP TO RIGHT.  
COMMON RTN  
MUTE  
GRP STEREO CTRL:  
SW ON ODD GRP  
LED ON EVEN GRP  
LEV/PAN CTRL  
(TO INPUTS)  
p.20  
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2
Output groups  
Output EQ features  
The five-band output EQ consists of two semi-parametric bands and three full parametric  
bands.The High and Low bands are shelving eq with frequency select and boost/cut con-  
trols.The three mid bands, High mid, Mid, and Low mid are full parametric with frequency,  
bandwidth, and boost / cut controls. All bands offer a generous overlap of adjacent oper-  
ating frequencies.  
High frequency—HF  
Frequency Continuously sweepable between 2 kHz and 16 kHz.  
Boost / Cut 15dB boost and cut. Shelving eq.  
High mid—HM  
Frequency Continuously sweepable between 400 Hz and 8 kHz.  
Q (Bandwidth) Continuously variable between 3 and .7  
Boost / Cut 15dB boost and cut.  
Mid frequencies—MF  
Frequency Continuously sweepable between 200 Hz and 4 kHz.  
Q (Bandwidth) Continuously variable between 3 and .7  
Boost / Cut 15dB boost and cut.  
Low mid—LM  
Frequency Continuously sweepable between 100 Hz and 2 kHz.  
Q (Bandwidth) Continuously variable between 3 and .7.  
Boost / Cut 15dB boost and cut.  
Low frequency—LF  
Frequency Continuously sweepable between 40 Hz and 800 Hz.  
Boost / Cut 15dB boost and cut. Shelving eq.  
Eq on  
Equalizer is on. This switch is used to activate the EQ section and can be used to  
make A/B comparisons between "flat" and eq'd signals.  
HPF  
High pass filter is on.The high pass filter cuts low frequencies to eliminate rumble  
and feedback with minimal effect on program material.  
HPF Frequency  
Continuously variable between 20 Hz and 400 Hz.The high pass filter has a slope of  
-12 dB per octave.  
p.21  
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2
Output groups  
X-Monitor owner’s manual  
Group  
Module Pair  
Controls  
Block diagram  
GROUP  
MUTE  
GRP POST  
FADER  
LOC RTN  
PRE  
GRP PRE  
FADER  
LOCAL  
RETURN  
LEVEL  
LOC RTN  
POST  
+6  
TO GROUP  
MIX AMP  
LOCAL RTN  
MUTE  
COMMON  
RETURN  
LEFT  
IN  
COM RTN  
POST  
LEVEL  
COMMON RTN  
FEED L & R  
FROM  
+6  
TO GROUP  
MIX AMP  
MASTERS 1 & 2  
RIGHT  
IN  
COMMON RTN  
MUTE  
p.22  
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2
Output groups  
Output features  
Local Return  
Each Output group has its own local return.This external input appears as a 1/4”TRS bal-  
anced line level input connector on the module rear panel.  
Safe preview  
L E D  
Safe Preview LED  
See LOCAL MICROPROCESSOR CONTROL section  
Mute  
Mute switch  
See LOCAL MICROPROCESSOR CONTROL section  
Local return level  
Controls the level of the local return signal into the group.  
Solo switch  
Pressing this momentary switch will include (illuminate) or exclude (not-illuminated)  
the local return from the consoles solo system. See Master Control Section for informa-  
tion on Solo options.  
Common Return  
The X-Monitor has a pair of 1/4”TRS balanced line level input connectors on the module  
rear panel.Any signals patched into these jacks are available to all of the output groups.  
Safe preview  
L E D  
Safe Preview LED  
See LOCAL MICROPROCESSOR CONTROL section  
Mute  
Mute switch  
See LOCAL MICROPROCESSOR CONTROL section  
Common return level  
Controls the level of the Common return into the group.  
Left in / Right in assignment buttons  
These buttons are used to assign the Left, Right or both of the Common return sig-  
nals to the output group.  
p.23  
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2
Output groups  
X-Monitor owner’s manual  
Group  
Module Pair  
Controls  
Block diagram  
EQ  
ON  
GROUP PRE FDR  
POST FDR  
SOLO CONTROL  
& SWITCHING  
LOC RTN PRE  
POST  
HF  
2-16K  
HI MID  
400 TO 8K  
MID  
200 TO 4K  
LO MID  
100 TO 2K  
LF  
40 TO 800  
GROUP FIVE BAND EQ  
GROUP  
SOLO  
LOCAL RTN  
SOLO  
MIX 13-16  
MAIN RIBBON:  
TO MIX AMPS  
& PRE CTRL  
TO  
MUTE IF SET PRE ?  
YES  
INPUT  
MICRO  
CARDS  
GROUP  
GROUP  
ASSIGN  
MICRO  
INTER-  
FACE  
NO  
TO MIXES  
GROUP  
MUTE  
13 THRU 16  
CARD  
13  
GRP POST  
FADER  
GROUP  
MUTE  
+6  
MIX 13  
LOC RT  
PRE  
GRP PRE  
FADER  
14  
15  
16  
SAFE  
PREVIEW  
MIX 14  
MIX 15  
MIX 16  
MUTE  
SOLO  
AND  
STEREO  
CTRL  
LOC RTN  
POST  
+
TO GROUP  
MIX AMP  
LOCAL RTN  
MUTE  
13-16 PRE CTRL  
( FROM MASTER 2 )  
SAFE  
PREVIEW  
A
MIX A  
B
CO  
RE  
1 OF 4  
CIRCUITS  
SHOWN  
COMMON RTN  
MUTE  
FROM  
MIX B  
COM RTN  
POST  
LEVEL  
MASTER  
MICRO  
CARD  
GROUP ASSIGN  
TO MIXES A & B  
SAFE  
PREVIEW  
+6  
TO GROUP  
MIX AMP  
STEREO  
PAIR  
WHEN SELECTED FOR STEREO PAIR OPERATION:  
CORRESPONDING INPUT SEND PAIR IS RECONFIGURED  
FOR LEV/PAN OPERATION (ODD IS LEV, EVEN IS PAN).  
GROUP SOLO IS CHANGED FROM MONO TO STEREO:  
ODD GRP SOLOS TO LEFT, EVEN GRP TO RIGHT.  
COMMON RTN  
MUTE  
GRP STEREO CTRL:  
SW ON ODD GRP  
LED ON EVEN GRP  
LEV/PAN CTRL  
(TO INPUTS)  
p.24  
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2
Output groups  
Output features  
Output Control  
Talk to  
The Talk back signal is assigned to the group.The level of the Talk back signal is con-  
trolled by theTalk Back level control in the Master section.  
Polarity reverse  
The polarity of the Group output is reversed.  
Stereo Pair  
L E D  
This switch with accompanying LED globally sets the configuration of the input  
Mix pots associated with each pair of outputs. For each odd/even pair, the Mix send pots  
are configured as Level / Pan.The odd numbered control sets the level, and the even num-  
bered control adjusts the stereo placement (pan).  
Safe preview  
L E D  
Safe Preview LED  
See LOCAL MICROPROCESSOR CONTROL section  
Mute  
Mute switch  
See LOCAL MICROPROCESSOR CONTROL section  
PK / SIG  
L E D  
The Peak / Signal level LED indicates the output level. It illuminates green, varying in  
intensity with the level of the audio signal. Red (Peak) indicates peaks and distortion. Peak  
is sensed both before and after the fader, while signal level is sensed before the fader only.  
Bus assignments 13, 14, 15 & 16  
The Group signal is assigned to Buses 13-16 which feed Matrix 1 - 4, located above  
the master control section.The feed to Buses 13-16 is normally Post-fader.All Bus 13-16  
sends (from Inputs and Groups) can be globally switched to Pre-fader by using the 13-16  
PRE switch, located in the Master section.  
Bus A assignment  
The Group signal is assigned to the main A output bus.This feed is always Post-fader.  
Bus B assignment  
The Group signal is assigned to the main B output bus.This feed is always Post-fader.  
Group fader  
The 100mm fader controls the level of the Group output and any Post-fader send.  
Solo switch  
Pressing this momentary switch will include (illuminate) or exclude (not-illuminated)  
the group from the consoles solo system. See Master Control Section for information on  
Solo options.  
p.25  
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2
Output groups  
X-Monitor owner’s manual  
Group Output Rear Panel  
Outputs 5-8  
Outputs 9-12  
Outputs 1-4  
Lamp  
Dim  
To Meter Bridge  
12  
11  
10  
9
8
7
6
5
4
3
2
1
Group Out  
Group Out  
Group Out  
Group Out  
Group Out  
Group Out  
Group Out  
Group Out  
Group Out  
Group Out  
Group Out  
Group Out  
12  
11  
10  
9
8
7
6
5
4
3
2
1
S
e
n
d
S
e
n
d
S
e
n
d
S
S
S
S
S
S
S
S
S
e
n
d
e
n
d
e
n
d
e
n
d
e
n
d
e
n
d
e
n
d
e
n
d
e
n
d
I
I
I
I
I
I
I
I
I
I
I
I
n
s
e
r
t
n
s
e
r
t
n
s
e
r
t
n
s
e
r
t
n
s
e
r
t
n
s
e
r
t
n
s
e
r
t
n
s
e
r
t
n
s
e
r
t
n
s
e
r
t
n
s
e
r
t
n
s
e
r
t
R
t
R
t
R
t
R
t
R
t
R
t
R
t
R
t
R
t
R
t
R
t
R
t
n
n
n
n
n
n
n
n
n
n
n
n
Local Rtn 12  
Local Rtn 11  
Local Rtn 10  
Local Rtn 9  
Local Rtn 8  
Local Rtn 7  
Local Rtn 6  
Local Rtn 5  
Local Rtn 4  
Local Rtn 3  
Local Rtn 2  
Local Rtn 1  
+
+
–
T= OUT  
T= IN  
R= IN  
2
1
1= GND  
1
2
1= GND  
2= OUT  
3= OUT  
Common  
Return R  
Common  
Return L  
+
+
–
2= IN  
3= IN  
3
3
R= G COMP  
S= GND  
DC IN  
In • MIDI • Out  
–
S= GND  
+
1= 12V  
+
XLR Female  
XLR Male  
1/4” Output  
1/4” Input  
2= 18V  
1
6
2
7
3= AGND  
4= AGND  
5= DGND  
3
4
5
Mic In  
Talkback In  
Split Out  
Main Out  
Group Out  
Matrix Out  
Monitor Out  
Talkback Out  
Alt Output  
Insert Send  
Ext Input  
Local Rtn  
Insert Rtn  
Common Rtn  
+
6= 48V  
–
7= 18V  
X–Monitor Group 9–12  
C
X–Monitor Group 5–8  
C
X–Monitor Group 1–4  
C
Block diagram  
GROUP OUT  
X-MONITOR GROUP  
(1 OF 12 SHOWN)  
MAIN  
RIBBON  
CABLE  
-
( TO METERBRIDGE )  
GROUP PRE FDR  
POST FDR  
PEAK  
Ø
GROUP  
GROUP  
FADER AMP  
BAL OUT  
50 WAY  
GRP PRE  
FADER  
GRP POST  
FADER  
TB TO  
GROUP  
HPF  
20 - 400HZ  
+10  
TB  
FEED  
SIGNAL  
PRESENT  
XFORMER  
OPTION  
GROUP  
MUTE  
T
LE  
MIX  
1 TO 12  
HPF  
GC  
∑
GROUP  
MIX AMP  
F
LEV  
F
Q
LEV  
F
Q
LEV  
F
Q
LEV  
F
LEV  
GROUP  
INSERT SEND  
EQ  
ON  
GROUP PRE FDR  
POST FDR  
SOLO CONTROL  
& SWITCHING  
LOC RTN PRE  
POST  
HF  
2-16K  
HI MID  
400 TO 8K  
MID  
200 TO 4K  
LO MID  
100 TO 2K  
LF  
40 TO 800  
BAL  
INSERT RTN  
GROUP  
RETURN  
(TO EQ)  
GROUP FIVE BAND EQ  
M
V
LE  
GROUP  
SOLO  
LOCAL RTN  
SOLO  
MIX 13-16  
MAIN RIBBON:  
TO MIX AMPS  
& PRE CTRL  
TO  
MUTE IF SET PRE ?  
YES  
INPUT  
MICRO  
CARDS  
GROUP  
MICRO  
INTER-  
FACE  
GROUP  
ASSIGN  
NO  
TO MIXES  
GROUP  
MUTE  
13 THRU 16  
CARD  
13  
GRP POST  
FADER  
GROUP  
+6  
MIX 13  
MIX 14  
MIX 15  
MIX 16  
MUTE  
LOC RTN  
PRE  
GRP PRE  
FADER  
14  
15  
16  
SAFE  
LOCAL  
RETURN  
PREVIEW  
MUTE  
SOLO  
AND  
STEREO  
CTRL  
LEVEL  
LOC RTN  
POST  
+6  
TO GROUP  
MIX AMP  
LOCAL RTN  
MUTE  
LOCAL RTN  
MUTE  
13-16 PRE CTRL  
( FROM MASTER 2 )  
SAFE  
PREVIEW  
A
MIX A  
B
COMMON  
RETURN  
1 OF 4  
CIRCUITS  
SHOWN  
LEFT  
IN  
COMMON RTN  
MUTE  
FROM  
MASTER  
MICRO  
CARD  
MIX B  
COM RTN  
POST  
LEVEL  
COMMON RTN  
GROUP ASSIGN  
TO MIXES A & B  
SAFE  
PREVIEW  
FEED L & R  
FROM  
+6  
TO GROUP  
MIX AMP  
MASTERS 1 & 2  
RIGHT  
IN  
STEREO  
PAIR  
WHEN SELECTED FOR STEREO PAIR OPERATION:  
CORRESPONDING INPUT SEND PAIR IS RECONFIGURED  
FOR LEV/PAN OPERATION (ODD IS LEV, EVEN IS PAN).  
GROUP SOLO IS CHANGED FROM MONO TO STEREO:  
ODD GRP SOLOS TO LEFT, EVEN GRP TO RIGHT.  
COMMON RTN  
MUTE  
GRP STEREO CTRL:  
SW ON ODD GRP  
LED ON EVEN GRP  
LEV/PAN CTRL  
(TO INPUTS)  
p.26  
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2
Output groups  
Output features  
Output Connectors - Each Group  
Group Out  
Male XLR carries the post fader Group output signal. This output is designed to  
drive output impedances greater than 600 ohms. The associated group metering follows  
signal levels that appear on this output connector.  
Insert Send & Return  
+
T= OUT  
Separate 1/4" TRS jacks are used for pre fader insert connectors. Signal is fed  
full time to ground compensated insert send connector. When a connector is  
R= G COMP  
S= GND  
plugged into the fully balanced 1/4" return jack, the internal signal path is broken, with the  
external (processed) signal continuing its signal flow through the module. This pair of con-  
nectors is used to "patch" external signal processing such as 1/3 octave EQ into the mod-  
ule’s signal path.  
Local return  
+
T= IN  
R= IN  
–
S= GND  
1/4” TRS jack- Balanced (can accept balanced or unbalanced inputs).This input  
feeds the group by way of the front panel "Local Return" controls. This may be used to  
bring effects inputs or external mixes into the mix group output channel.  
Common return (On Rear of Module 5-8)  
+
T= IN  
R= IN  
–
S= GND  
A pair of 1/4” TRS jacks- Balanced (can accept balanced or unbalanced inputs).  
Signals into these jacks are sent to the Common-return controls on the Master module.  
Two separate inputs are provided to allow a common left and right signal to feed any of the  
12 group mix output channels. Master On switches are provided as well as pre and post  
fader Solo switching and master level controls. This section may be used to feed reference  
or click tracks to any of the 12 main output mixes, or common ambience effects.  
p.27  
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3
Master section  
X-Monitor owner’s manual  
X-MONITOR MASTER MODULE (UPPER AREA)  
MIX A  
INSERT  
SEND RTN  
MIX AMP  
A
5-BAND EQ  
Ø
MIX  
A
MIX  
A
MIX A  
INST RTN  
TO EQ 1  
SELECT  
-
SWITCH BETWEEN  
MTX 1 OR MIX A  
A - PRE  
FADER  
LEVEL  
MIX A  
BAL OUT  
∑
GC  
A
-
POST  
FADER  
+10  
TALKBACK  
TB  
FEED  
XFORMER  
OPTION  
MIX  
A
PK  
PRE-FADER  
POST-FADER  
MUTE  
MUTE  
SOLO  
TO SOLO  
&
MICRO  
MUTE AND SOLO SWITCHING  
(MICRO CONTROLLED)  
SIG  
MIX A - LOCATED ON MASTER 1  
MIX AMP  
B
MIX B  
INSERT  
SEND RTN  
5-BAND EQ  
Ø
MIX  
B
MIX  
TB  
B
MIX B  
INST RTN  
TO EQ 2  
SELECT  
-
SWITCH BETWEEN  
MTX 2 OR MIX B  
B - PRE  
FADER  
LEVEL  
MIX B  
BAL OUT  
∑
GC  
B
-
POST  
FADER  
+10  
TALKBACK  
FEED  
XFORMER  
OPTION  
MIX  
B
PK  
PRE-FADER  
MUTE  
POST-FADER  
MUTE  
SOLO  
TO SOLO  
&
MICRO  
MUTE AND SOLO SWITCHING  
(MICRO CONTROLLED)  
SIG  
MIX B - LOCATED ON MASTER 2  
MATRIX TALKBACK  
(FROM MASTER 2)  
MATRIX 1 (2)  
MIX AMP  
MATRIX  
INSERT  
SEND RTN  
5-BAND EQ  
MATRIX 1 (2)  
BAL OUT  
MATRIX  
LEVEL  
TO EQ 1 (2)  
MATRIX  
INST RTN  
OUT 13  
OUT 14  
OUT 15  
OUT 16  
MATRIX  
—
MTX POST  
-
PRE-FADER  
FADER  
CAN SELECT EQ  
TO BE ON EITHER  
MATRIX 1 (2) -DEFAULT  
GC  
∑
+10  
OR MIX A (B)-SWITCHED  
MATRIX  
MUTE  
MATRIX 1 AND 2 HAVE EQS  
THAT CAN BE SWITCHED  
INTO THE MIX A AND B  
PATHS INSTEAD OF THE  
DEFAULT MATRIX PATH  
EXT IN  
MUTE  
SOLO  
MATRIX  
EXT IN  
MUTE AND SOLO SWITCHING  
(MICRO CONTROLLED)  
MIX  
13 (14)  
∑
TO SOLO BUS & MICRO INTERFACE  
MIX 13 (14)  
MIX AMP  
OUT  
13 (14)  
TO MATRIX MIXES  
MATRIX 1 (2) - LOCATED ON MASTER 1 (2)  
( MATRIX 1 SHOWN, MATRIX 2 IS IDENTICAL )  
MATRIX TALKBACK  
(FROM MASTER 2)  
MATRIX 3 (4)  
MIX AMP  
5-BAND EQ  
MATRIX  
INSERT  
SEND RTN  
MATRIX 3 (4)  
BAL OUT  
MATRIX  
MATRIX  
MATRIX  
INST RTN  
OUT 13  
OUT 14  
OUT 15  
OUT 16  
LEVEL  
MATRIX  
POST-FADER  
TO EQ 3 (4)  
PRE-FADER  
—
GC  
∑
+10  
ALWAYS ON  
MATRIX PATH  
MATRIX  
MUTE  
MATRIX 3 & 4 HAVE DEDICATED  
EQS, AND THE MATRIX  
OUTPUTS CAN BE ADDED  
INTO MIXES A AND B  
EXT IN  
MUTE  
SOLO  
MATRIX  
EXT IN  
MUTE AND SOLO SWITCHING  
(MICRO CONTROLLED)  
MIX  
15 (16)  
∑
TO SOLO BUS & MICRO INTERFACE  
MIX 15 (16)  
MIX AMP  
OUT  
15 (16)  
ALLOWS MATRIX 3 AND 4  
TO BE ADDED INTO  
MIX A AND B  
MATRIX (4)  
3
TO MATRIX MIXES  
TO (B)  
A
MATRIX  
TO MIX  
A
(B)  
PRE-FADER  
MATRIX  
POST-FADER  
MATRIX 3 (4) - LOCATED ON MASTER 3 (4)  
( MATRIX 3 SHOWN, MATRIX 4 IS IDENTICAL )  
TO MATRIX (4)  
3
5-BAND EQ - NORMALLY ON MATRIX PATH  
( 1 OF 4 SHOWN )  
PRE-FADER  
FROM MATRIX  
3
(4)  
EQ TO  
MIX (B)  
EQ  
ON  
INSERT RETURN  
A
FR  
FR  
FR  
FR  
LEV  
LEV  
LEV  
LEV  
LEV  
TO MATRIX  
1
(2)  
PATH SWITCHING BETWEEN  
MATRIX AND MAIN MIX ONLY  
PRE-FADER  
AVAILABLE ON EQ  
1
&
2
TO MIX  
A
(B)  
HF  
12K  
HI MID  
400 TO 8K  
MID  
200 TO 4K  
LO MID  
100 TO 2K  
LF  
20 TO 400  
PRE-FADER  
FROM MATRIX (2)  
1
INSERT RETURN  
FIVE BAND EQ (1 OF 4)  
FROM MIX (B)  
A
INSERT RETURN  
PATH SWITCHING BETWEEN  
MATRIX AND MAIN MIX ONLY  
AVAILABLE ON EQ  
1
&
2
Block diagrams  
TO METER BRIDGE  
SOLO  
X-MONITOR MASTER MODULE (LOWER AREA)  
L
R
∑
∑
SOLO LEFT  
SOLO  
MIX  
AMPS  
SOLO  
AUDIO  
SOLO RIGHT  
COMMON RETURN  
LEFT RIGHT  
MONITOR OUT  
EXTERNAL TALKBACK  
ALTERNATE OUT EXT MONITOR IN  
M3 M4  
LEFT RIGHT LEFT RIGHT  
M1  
M2  
LEFT  
RIGHT  
OUT  
IN  
SOLO CONTROL  
&
STATUS  
INPUT  
-
ACTIVE  
-
OUTPUT  
SOLO  
SIG  
PK  
ALT  
LEVEL  
ACTIVE  
CLEAR  
ON  
ON  
TB  
INPUT  
TB  
PRIORITY  
Ø
LEVEL  
COM RTN  
-
R
COM RTN  
-
L
(
B
)
LAST  
PRESSED  
MUTE  
MASTER LEV  
MASTER LEV  
TB  
OUT  
EXT TB  
ON  
SAFE  
PREV  
POST  
FADER  
COMMON RETURN  
LEFT RIGHT  
+10  
+10  
A-B  
TO ALT  
&
TO ALL GROUPS  
MONITOR  
LEVEL  
MIX  
PRE  
MIX  
A
-
B
-
128  
SOLO CONTROL  
SOLO  
COM  
SOLO  
COMMON RETURN  
TB AUDIO  
(TO RIBBON)  
SEQUENCED  
SCENE  
L
COM  
R
SOLO  
AUDIO  
RIGHT  
TO  
LEFT  
SIDE  
MONITOR  
MUTE  
A
B
SUM  
MONO  
TB  
SOLO  
AUTO  
MUTE  
EDIT  
EDIT  
SAFE  
FROM  
-
PREVIEW  
TO SOLO  
MIX L&R  
SOLO  
AUDIO  
LEFT  
POST-FADER  
CTRL  
GROUP  
MICRO  
CARDS  
SOLO  
MIX  
SINGLE  
SCENE  
MICRO  
UTILITY  
TAP TO  
LATCH  
A
&
B
TALK ON  
+48V  
SEQUENCE  
SCENE ON  
CONTROLS  
LOCATED ON  
EXT  
MON  
IN  
GO  
-
TB  
SWITCH  
LOGIC  
HOLD FOR  
MOMENTARY  
MASTER  
MASTER  
1
HP  
LEVEL  
1
2
3
MICRO  
INTER-  
FACE  
CARD  
-
SEE BLOCK DIAG  
FOR DETAILS  
>
SOLO  
SOLO  
CTRL  
LEFT  
RIGHT  
AUDIO  
M
A
N
U
A
L
TALK BACK  
+48 VOLT  
OFF ON  
TB  
LEVEL  
INPUT  
&
/
(
A
)
GROUP  
CONTROL  
TALK TO  
MATRIX  
4
5
6
M
U
T
PINK  
NOISE  
LOCATED UNDER ARMREST  
E
TB AUDIO  
TO MATRIX  
TRU  
TO  
RIGHT  
SIDE  
TALKBACK  
AUDIO  
S
C
E
N
E
S
1
4
-
INPUT  
MICRO  
CARDS  
PINK  
7
8
13-16  
PRE-FADE  
HEADPHONE  
TALK BACK  
NOISE  
GEN  
OUT  
IN  
CHANGES MIXES  
13 THRU 16  
TO PRE-FADER INSTEAD  
OF DEFAULT POST-FADER  
TO INPUTS  
AND GROUPS  
X-Monitor Block Diagram  
MICRO MUTE CONTROL  
X-MONITOR BLK DIA-REV1.2-7/27/01  
p.28  
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3
Master section  
Master Module Summary  
The MASTER module of X-Monitor serves multiple purpose.  
The module contains the following sections:  
• Matrix Output EQ and high pass filter  
• Matrix Output mix  
• Matrix Output control  
• A and B Output control with 100mm faders  
• Common Return master control  
• Microprocessor Mute Controller  
• Monitor control with 100mm fader  
• Alternate and Headphone Outputs  
• Talkback Control  
• Solo Control  
Matrix section  
X-Monitor includes a unique matrix output system. Signal is assigned from Input and/or  
Group modules into a mix bus section. These mix buses contains no front panel control or  
output connectors, but rather are a source for the matrix system. Four output matrixes are  
included. Each has separate control of master levels from mixes 13, 14, 15, and 16, as well as  
an external input connector. Each matrix output includes level control, Solo switch and  
microprocessor mute system.A five-band output EQ is available on each matrix output.  
The matrix section may be used in a number of different ways:  
Effects Sends -The most basic application of the matrix system is to feed effects devices from  
individual input channels without any required re-patching. When used in this application,  
matrix 1 would have mix 13 level control set to unity with all other level controls on matrix  
1 (except output level) set fully counter-clockwise (or off). Matrix 2 would have mix 14 level  
control set to unity with all other level controls on matrix 2 (except output level) set fully  
counter-clockwise (or off). This same set up would be repeated with matrix 3 (mix 15) and  
matrix 4 (mix16).  
p.29  
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3
Master section  
X-Monitor owner’s manual  
T
6)  
MIX AMP  
ALLOWS MATRIX 3 AND 4  
TO BE ADDED INTO  
MIX A AND B  
MATRIX 3 (4)  
TO A (B)  
TO MATRIX MIXES  
TO MIX A (B)  
MATRIX  
PRE-FADER  
MATRIX  
POST-FADER  
MATRIX 3 (4) - LOCATED ON MASTER 3 (4)  
( MATRIX 3 SHOWN, MATRIX 4 IS IDENTICAL )  
TO MATRIX 3 (4)  
PRE-FADER  
5-BAND EQ - NORMALLY ON MATRIX PATH  
( 1 OF 4 SHOWN )  
FROM MATRIX 3 (4)  
INSERT RETURN  
EQ TO  
MIX A (B)  
EQ  
ON  
FR  
FR  
FR  
FR  
LEV  
LEV  
LEV  
LEV  
LEV  
TO MATRIX 1 (2)  
PRE-FADER  
PATH SWITCHING BETWEEN  
MATRIX AND MAIN MIX ONLY  
AVAILABLE ON EQ 1 & 2  
TO MIX A (B)  
PRE-FADER  
HF  
12K  
HI MID  
400 TO 8K  
MID  
200 TO 4K  
LO MID  
100 TO 2K  
LF  
20 TO 400  
FROM MATRIX 1 (2)  
INSERT RETURN  
FIVE BAND EQ (1 OF 4)  
FROM MIX A (B)  
INSERT RETURN  
PATH SWITCHING BETWEEN  
MATRIX AND MAIN MIX ONLY  
AVAILABLE ON EQ 1 & 2  
p.30  
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1
Master section  
Output EQ features  
The five-band output EQ consists of a high-freq shelving band followed by four semi-para-  
metric bell-shaped bands.The four bands have frequency and boost / cut controls. All bands  
offer a generous overlap of adjacent operating frequencies.These Output EQs are normal-  
ly assigned to the Matrix Outputs.The first two (1 & 2) can be switched over to the BusA  
and Bus B Outputs with the EQ to A (B) switches.  
high frequency—HF  
Boost / Cut 15dB boost and cut. Shelving eq at 12kHz.  
high mid—HM  
Frequency Continuously sweepable between 400 Hz and 8 kHz.  
Boost / Cut 15dB boost and cut.  
mid frequencies—MF  
Frequency Continuously sweepable between 200 Hz and 4 kHz.  
Boost / Cut 15dB boost and cut.  
Low mid—LM  
Frequency Continuously sweepable between 100 Hz and 2 kHz.  
Boost / Cut 15dB boost and cut.  
Low frequency—LF  
Frequency Continuously sweepable between 20 Hz and 400 Hz.  
Boost / Cut 15dB boost and cut.  
Eq on  
Equalizer is on. This switch is used to activate the EQ section and can be used to make  
A/B comparisons between "flat" and eq'd signals.  
EQTO A (B)  
The EQ is in the Matrix signal path, the Bus A (B) path is flat (no EQ).  
The EQ is switched to the Bus A(B) signal path, the Matrix path is flat (no EQ).  
MTXTO A (B)  
The post-fader Matrix signal is fed into the Bus A (B) mix. Matrix 3 can feed Bus A,  
Matrix 4 can feed Bus B.An internal jumper allows this feed to be changed to Matrix pre-  
fader.  
p.31  
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3
Master Section  
X-Monitor owner’s manual  
MATRIX 1 (2) - LOCATED ON MASTER 1 (2)  
( MATRIX 1 SHOWN, MATRIX 2 IS IDENTICAL )  
MATRIX TALKBACK  
(FROM MASTER 2)  
MATRIX 3 (4)  
5-BAND EQ  
MATRIX  
INSERT  
SEND RTN  
MIX AMP  
MATRIX 3 (4)  
BAL OUT  
MATRIX  
LEVEL  
MATRIX  
INST RTN  
MATRIX  
POST-FADER  
OUT 13  
OUT 14  
OUT 15  
OUT 16  
MATRIX  
TO EQ 3 (4)  
PRE-FADER  
—
GC  
∑
+10  
ALWAYS ON  
MATRIX PATH  
MATRIX  
MUTE  
MATRIX 3 & 4 HAVE DEDICATED  
EQS, AND THE MATRIX  
OUTPUTS CAN BE ADDED  
INTO MIXES A AND B  
EXT IN  
MUTE  
SOLO  
MATRIX  
EXT IN  
MUTE AND SOLO SWITCHING  
(MICRO CONTROLLED)  
MIX  
15 (16)  
∑
TO SOLO BUS & MICRO INTERFACE  
MIX 15 (16)  
MIX AMP  
OUT  
15 (16)  
ALLOWS MATRIX 3 AND 4  
TO BE ADDED INTO  
MIX A AND B  
MATRIX 3 (4)  
TO A (B)  
TO MATRIX MIXES  
TO MIX A (B)  
MATRIX  
PRE-FADER  
MATRIX  
POST-FADER  
MATRIX 3 (4) - LOCATED ON MASTER 3 (4)  
( MATRIX 3 SHOWN, MATRIX 4 IS IDENTICAL )  
TO MATRIX 3 (4)  
PRE-FADER  
5-BAND EQ - NORMALLY ON MATRIX PATH  
( 1 OF 4 SHOWN )  
FROM MATRIX 3 (4)  
INSERT RETURN  
EQ TO  
MIX A (B)  
EQ  
ON  
FR  
FR  
FR  
FR  
LEV  
LEV  
LEV  
LEV  
LEV  
TO MATRIX 1 (2)  
PRE-FADER  
PATH SWITCHING BETWEEN  
MATRIX AND MAIN MIX ONLY  
AVAILABLE ON EQ 1 & 2  
TO MIX A (B)  
PRE-FADER  
HF  
12K  
HI MID  
400 TO 8K  
MID  
200 TO 4K  
LO MID  
100 TO 2K  
LF  
20 TO 400  
FROM MATRIX 1 (2)  
INSERT RETURN  
FIVE BAND EQ (1 OF 4)  
FROM MIX A (B)  
INSERT RETURN  
PATH SWITCHING BETWEEN  
MATRIX AND MAIN MIX ONLY  
AVAILABLE ON EQ 1 & 2  
p.32  
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3
Master section  
Matrix Mix features  
The Matrix section is fed from the internal Bus 13 thru 16 signals.These internal buses get  
their signal from the Input and Groups via the Bus 13-16 assignment switches.The assign-  
ment to Buses 13-16 is normally post-fader, a master switch globally changes this to pre-  
fader. Each Matrix also has its own External input which can be mixed in with the Bus 13-  
16 signals.The External Input signal comes from the four 1/4”TRS jacks located on the rear  
of the Master Module.  
13- Bus 13 mix level into the Matrix.  
14- Bus 14 mix level into the Matrix.  
15- Bus 15 mix level into the Matrix.  
16- Bus 16 mix level into the Matrix.  
EXT IN- External Input mix level into the Matrix, fromTRS jack on rear panel  
MUTE- Micro-controllable mute control. See Micro-instructions for operation.  
LEV- Master Level control for Matrix output.  
SOLO- Allows monitoring of the Matrix signal in the Solo system.This feed follows  
the master SOLO MODE switch.Pre-fader monitors the actual Matrix mix-bus,Post-Fader  
monitors the Matrix signal after the Master Level and Mute controls. In the X-Monitor, the  
Solo system makes a distinction between Inputs and Outputs.The Matrix Solo is treated as  
an Output by the Solo system. See the Solo Section of the manual for details on the differ-  
ent Solo functions and modes.  
p.33  
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3
Master section  
Module  
X-Monitor owner’s manual  
Block Diagram  
X-MONITOR MASTER MODULE (UPPER AREA)  
MIX A  
INSERT  
SEND RTN  
MIX AMP  
5-BAND EQ  
MIX A  
Ø
A
MIX A  
MIX A  
INST RTN  
TO EQ 1  
SELECT  
A - PRE  
FADER  
LEVEL  
MIX A  
BAL OUT  
∑
GC  
-
A - POST  
FADER  
SWITCH BETWEEN  
MTX 1 OR MIX A  
+10  
TALKBACK  
TB  
FEED  
XFORMER  
OPTION  
MIX A  
MUTE  
PK  
PRE-FADER  
POST-FADER  
MUTE  
SOLO  
TO SOLO  
&
MICRO  
MUTE AND SOLO SWITCHING  
(MICRO CONTROLLED)  
SIG  
MIX A - LOCATED ON MASTER 1  
MIX AMP  
B
MIX B  
INSERT  
SEND RTN  
5-BAND EQ  
Ø
MIX B  
LEVEL  
MIX B  
MIX B  
INST RTN  
TO EQ 2  
SELECT  
-
B - PRE  
FADER  
MIX B  
BAL OUT  
∑
GC  
B - POST  
FADER  
SWITCH BETWEEN  
MTX 2 OR MIX B  
+10  
TALKBACK  
TB  
FEED  
XFORMER  
OPTION  
MIX B  
MUTE  
PK  
PRE-FADER  
POST-FADER  
MUTE  
SOLO  
TO SOLO  
&
MICRO  
MUTE AND SOLO SWITCHING  
(MICRO CONTROLLED)  
SIG  
MIX B - LOCATED ON MASTER 2  
p.34  
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3
Master section  
Bus A & Bus B master controls  
The BusA and Bus B circuits are internal mix buses that can be fed from any Input or Group  
module by using the A and B assignment switches located next to the fader on each mod-  
ule.The feed to these buses is always post-fader.These buses are similar to the Bus 13-16  
internal buses except that:  
1) The feed to Bus A & B is always post-fader. Feed to Bus 13-16 can be globally switched  
to pre-fader.  
2) The Bus A & B circuits have their own master faders with TB, Polarity, programmable  
Mute and Solo switches. Bus 13-16 circuits only feed the matrix section.  
SIG/ PK (Signal/Peak)  
L E D  
This dual-color LED shows the signal conditions within the Bus A (B) circuits.Varying  
intensity GREEN shows signal present at the mix bus, RED indicates that signals are  
approaching or have exceeded clip levels anywhere within the circuits.The Peak circuit mon-  
itors the mix bus and the pre and post fader signals.The LED will illuminate RED when any  
signal comes within 3dB of clipping.  
TLKTO (TalkTo)  
This switch (when depressed) allows the signal from theTalkBack section to be mixed  
into the Bus A (B) circuits.  
Ø (Polarity Reverse)  
The polarity of the Bus A (B) output is reversed when this switch is depressed.  
MUTE (Micro-Programmable)  
This switch mutes the BusA (B) outputs.The SAFE/PREV LED located directly below  
the switch shows mico-mute status.See the Mico Section of the Owner’s manual for details  
on its operation.  
Fader  
This 100mm fader controls the level of the post-fader output from Bus A (B)  
SOLO  
This switch is used to add/remove the Bus A (B) signal from the Solo Bus.The inter-  
nal LED (Yel) will illuminate whenever the Solo is active. In the X-Monitor, the Solo system  
makes a distinction between Inputs and Outputs.The BusA (B) solo is treated as an Output  
by the Solo system. Both the pre-fader and post-fader signals can be monitored, See the  
Solo Section of the manual for details on the different solo functions and modes.  
p.35  
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3
Master section  
X-Monitor owner’s manual  
Group Module Panel  
Master Module Panel  
block diagram (Master)  
block diagram (Group)  
COMMON RETURN  
COMMON  
RETURN  
LEFT  
RIGHT  
LEFT  
IN  
COM RTN  
POST  
LEVEL  
COMMON RTN  
FEED L & R  
FROM  
+6  
TO GROUP  
MIX AMP  
MASTERS 1 & 2  
RIGHT  
IN  
COMMON RTN  
MUTE  
ON  
ON  
COM RTN - R  
MASTER LEV  
COM RTN - L  
MASTER LEV  
COMMON RETURN  
+10  
+10  
LEFT & RIGHT  
TO ALL GROUPS  
SOLO CONTROL  
COMMON RETURN  
SOLO  
COM L  
SOLO  
COM R  
Rear Panel (Group 5-8)  
MONITOR  
MUTE  
SOLO  
AUTO  
MUTE  
FROM  
POST-FADER  
CTRL  
TO SOLO  
MIX L&R  
8
7
6
5
Group Out  
Group Out  
Group Out  
Group Out  
8
7
6
5
S
S
S
S
e
n
d
e
n
d
e
n
d
e
n
d
I
I
I
I
n
s
e
r
t
n
s
e
r
t
n
s
e
r
t
n
s
e
r
t
R
t
R
t
R
t
R
t
n
n
n
n
Local Rtn 8  
Local Rtn 7  
Local Rtn 6  
Local Rtn 5  
Common  
Return R  
Common  
Return L  
X–Monitor Group 5–8  
C
p.36  
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3
Master section  
Common Return Inputs  
Two separate inputs are provided to allow a common left and right signal to feed any  
of the 12 group mix output channels. Master On switches are provided as well as  
pre and post fader Solo switching and master level controls. This section may be  
used to feed reference or click tracks to any of the 12 main output mixes, or com-  
mon ambience effects.The input jacks for the Common Returns are located on the  
rear of Group Module 5-8.They are balanced 1/4” TRS jacks.  
Controls (Master Module)  
ON (Left & Right)  
Feeds the buffered input signals into the Common Return control section.  
Master Level (Left & Right)  
This pot controls the overall level of the Common Input.This post-level signal is what  
is distributed to the twelve Group modules.  
Solo  
This switch is used to add/remove the Common Return signal from the Solo Bus.The  
internal LED (Yel) will illuminate whenever the Solo is active.In the X-Monitor,the Solo sys-  
tem makes a distinction between Inputs and Outputs.The Common Return solo is treat-  
ed as an Input by the Solo system. Both the pre-fader and post-fader signals can be moni-  
tored, See the Solo Section of the manual for details on the different solo functions and  
modes.  
Controls (Group Module)  
MUTE (Micro-Programmable)  
This switch mutes the combined mix of the Common Returns to the Group Mix bus.  
The SAFE/PREV LED located directly above the switch shows mico-mute status. See the  
Mico Section of the Owner’s manual for details on its operation.  
Level  
This control adjusts the overall level of the combined Common returns to the Group  
mix bus.This pot can be set independently for each Group to allow a different level of the  
Common Returns to appear in each Group.The overall level of ALL the Common Return  
signals is controlled at the Master Module.  
Left In  
When this switch is depressed, the Common Return LEFT signal from the Master  
Module is fed to the combining circuit driving the Level pot.  
Right In  
When this switch is depressed, the Common Return RIGHT signal from the Master  
Module is fed to the combining circuit driving the Level pot.  
p.37  
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3
Master section  
X-Monitor owner’s manual  
module  
(TB Controls)  
Solo &TalkBack block diagram  
TO METER BRIDGE  
X-MONITOR MASTER MODULE (LOWER AREA)  
L
SOLO  
R
∑
∑
SOLO LEFT  
SOLO  
MIX  
AMPS  
SOLO  
AUDIO  
SOLO RIGHT  
OUT  
RIGHT  
EXTERNAL TALKBACK  
ALTERNATE OUT EXT MONITOR IN  
M3 M4  
M2  
OUT  
IN  
LEFT  
RIGHT  
LEFT  
RIGHT  
SOLO CONTROL & STATUS  
INPUT  
- ACTIVE -  
OUTPUT  
SOLO  
ALT  
LEVEL  
ACTIVE  
CLEAR  
INPUT  
TB  
LEVEL  
( B )  
PRIORITY  
LAST  
PRESSED  
TB  
OUT  
EXT TB  
ON  
POST  
FADER  
A-B  
TO ALT  
MONITOR  
LEVEL  
MIX A  
- PRE -  
MIX B  
128  
TB AUDIO  
(TO RIBBON)  
SEQUENCED  
SCENE  
module  
(Solo Controls)  
SOLO  
AUDIO  
RIGHT  
TB  
EDIT  
EDIT  
SAFE  
PREVIEW  
SOLO  
AUDIO  
LEFT  
SINGLE  
SCENE  
MICRO  
UTILITY  
TAP TO  
LATCH  
TALK ON  
+48V  
SEQUENCE  
SCENE ON  
EXT  
MON  
IN  
GO  
-
TB  
HOLD FOR  
MOMENTARY  
SWITCH  
LOGIC  
MASTER  
MICRO  
INTER-  
FACE  
HP  
LEVEL  
1
2
3
RIGHT  
M
A
N
U
A
L
CARD  
TALK BACK  
+48 VOLT  
OFF / ON  
TB  
-
LEVEL  
( A )  
INPUT &  
GROUP  
CONTROL  
4
5
6
M
U
T
PINK  
NOISE  
LOCATED UNDER ARMREST  
E
S
C
E
N
E
S
PINK  
7
8
HEADPHONE  
OUT  
NOISE  
GEN  
TALK BACK  
IN  
ES MIXES  
RU 16  
ER INSTEAD  
POST-FADER  
MICRO MUTE CONTROL  
Rear panel  
(Master)  
Matrix 4  
Matrix 3  
Matrix 2  
Matrix 1  
Ext  
In  
Ext  
In  
Ext  
In  
Ext  
In  
Out  
Out  
Out  
Out  
4
3
2
1
Insert  
Send  
Insert  
Insert  
Insert  
Send  
Send  
Send  
Insert  
Insert  
Insert  
Return  
Insert  
Return  
Return  
Return  
Monitor  
Monitor  
Main  
Main  
Out  
Out  
Out  
B
Out  
A
R
L
TB  
Ext  
TB  
In  
Insert  
Send  
Insert  
Send  
Out  
Insert  
Return  
Insert  
Return  
Ext Mon  
Input  
R
Ext Mon  
Input  
L
Alt  
Alt  
Out  
Out  
B
A
X–Monitor Master  
C
p.38  
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3
Master section  
Talkback features  
Talkback control  
The talkback section provides the facilities to take either an external input signal, or an internal-  
ly generated pink noise signal and route it to the consoles outputs.This is useful for making  
announcements from the mix position and for performing system diagnostics when other signal  
sources are not readily available.  
Talkback Sources  
The talkback control section can get its signal from three possible sources.  
1)TB IN-An XLR jack located below the consoles armrest. Suited for Mic level inputs, Phantom  
power is available on this jack via an internal jumper.  
2) Pink noise generator,The internal noise generator can be selected with the PINK NOISE  
switch. Depressing this switch both activates the internal noise generator and de-selects theTB  
IN jack.Whichever of these two sources is selected is considered the“Internal” signal. NOTE:It  
is ONLY this“Internal” signal that is fed to the ExternalTB Out XLR jack when theTALK-  
BACK OUT switch is depressed.  
3) ExternalTB IN-This XLR is located on the rear of the Master Module. Its line-level signal is  
mixed with the“Internal” signal whenever EXTTB ON is depressed.The combination of this  
Ext Input and the Internal source is what is fed to the modules when theTalkback is active.  
Pink Noise switch  
The talkback control section gets its internal source signal from theTalkback XLR mic  
inputs.  
The talkback control section gets its internal signal from the pink noise generator.  
Talkback Level  
This control sets the level of the talkback signal, whether it is from the external input or  
consists of the internal pink noise generator.  
TB ON -Talk back on  
This "soft" switch activates theTalkback section.An internal RED LED will illuminate to indicate  
that theTB is active.TheTalkback section must be activate in order for any of its features to  
work.  
Tap switch once -This will toggle theTalkback section on and off.Tap once to turn it on,  
when you're done tap it again to turn it off.  
Press and hold -The switch will work as a momentary button if pressed and held for  
more than two seconds.While the button is down, theTalkback section is activated.When you  
release the button, theTalkback section shuts off.  
EXTTB ON  
When this switch is depressed, the signal from the rear-panel ExtTB In jack is mixed with  
the internalTB signal.TheTB Level pot andTALK ON switch control this input.  
TALKBACK OUT  
When this switch is depressed, the internal signal from theTB section is sent to the rear-  
panel ExtTB Out jack.TheTB Level pot andTALK ON switch control this output.  
p.39  
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3
Master section  
X-Monitor owner’s manual  
module  
(HP Controls)  
Monitor & HP block diagrams  
TO METER BRIDGE  
R AREA)  
X-MO  
L
SOLO  
R
∑
∑
SOLO LEFT  
SOLO  
MIX  
AMPS  
SOLO  
AUDIO  
SOLO RIGHT  
ALTERNATE OUT EXT MONITOR IN  
3
M4  
RETURN  
RIGHT  
MONITOR OUT  
LEFT RIGHT  
M2  
LEFT  
RIGHT  
LEFT  
RIGHT  
SOLO CONTROL & STATUS  
INPUT  
- ACTIVE -  
OUTPUT  
SOLO  
ALT  
LEVEL  
ACTIVE  
CLEAR  
INPUT  
PRIORITY  
COM RTN - R  
MASTER LEV  
LAST  
PRESSED  
POST  
FADER  
COMMON RETURN  
+10  
A-B  
TO ALT  
LEFT & RIGHT  
TO ALL GROUPS  
MONITOR  
LEVEL  
MIX A  
- PRE -  
MIX B  
128  
SOLO  
N
SEQUENCED  
SCENE  
module  
(Mon Controls)  
SOLO  
AUDIO  
RIGHT  
COM R  
MONITOR  
MUTE  
SUM  
MONO  
SOLO  
AUTO  
MUTE  
EDIT  
EDIT  
SAFE  
PREVIEW  
SOLO  
AUDIO  
LEFT  
SOLO  
L&R  
SINGLE  
SCENE  
MICRO  
UTILITY  
SEQUENCE  
SCENE ON  
EXT  
MON  
IN  
GO  
R
RY  
MASTER  
MICRO  
INTER-  
FACE  
HP  
LEVEL  
1
2
3
SOLO  
SOLO  
CTRL  
LEFT  
RIGHT  
AUDIO  
M
A
N
U
A
L
CARD  
-
INPUT &  
GROUP  
CONTROL  
4
5
6
M
U
T
TALK TO  
MATRIX  
D UNDER ARMREST  
E
TB AUDIO  
TO MATRIX  
1 TRU 4  
TALKBACK  
AUDIO  
S
C
E
N
E
S
7
8
13-16  
PRE-FADE  
HEADPHONE  
OUT  
K
CHANGES MIXES  
13 THRU 16  
TO PRE-FADER INSTEAD  
OF DEFAULT POST-FADER  
TO INPUTS  
AND GROUPS  
MICRO MUTE CONTROL  
Rear panel  
(Master)  
Matrix 4  
Matrix 3  
Matrix 2  
Matrix 1  
Ext  
In  
Ext  
In  
Ext  
In  
Ext  
In  
Out  
Out  
Out  
Out  
4
3
2
1
Insert  
Insert  
Insert  
Insert  
Send  
Send  
Send  
Send  
Insert  
Insert  
Insert  
Return  
Insert  
Return  
Return  
Return  
Monitor  
Monitor  
Main  
Main  
Out  
Out  
Out  
B
Out  
A
R
L
TB  
Ext  
TB  
In  
Insert  
Send  
Insert  
Send  
Out  
Insert  
Return  
Insert  
Return  
Ext Mon  
Input  
R
Ext Mon  
Input  
L
Alt  
Alt  
Out  
Out  
B
A
X–Monitor Master  
C
p.40  
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3
Master section  
Monitor, headphone & alt out features  
Monitor, headphone & alt out control  
The Monitor output normally follows the Solo system, any signals that are solo’d can  
be heard in both the Headphone and Monitor outputs. A Mute button allows the  
operator to silence the Monitor output, while an EXT MON IN switch permits the  
operator to monitor an external source on the headphones.A pair of 1/4”TRS jacks  
on the rear of the Master Module bring the Ext Input into the headphones.  
Additionally, another output is provided (Alt Out) which also normally follows the  
Solo system.An RTA or similar piece of monitoring gear can be driven from this out-  
put. For added versatility, the Bus A & B signals can alternately be fed to this output.  
monitor controls  
MUTE (Monitor Mute)  
The Monitor output is turned off.The XLR output jacks are located on the rear  
of the Master Module.  
Fader (Monitor Level)  
This 100mm fader controls the level of the Monitor Out.  
SUM MONO (Monitor Source Select)  
The Monitor Out is stereo (for Stereo signals).  
The Monitor Outs are summed to mono.This setting is useful if you are using  
a single wedge as your monitor speaker.  
Headphone controls  
EXT MON IN (Headphone Source Select)  
The Headphones follow the Solo system.  
The Headphones are fed from the Ext Mon In jacks on the rear.  
Lev (Headphone Level)  
This pot controls the level of the headphone output. The headphone jack is  
located under the armrest, next to the TB In jack.  
Alt-out controls  
Lev (Alt-Out Level)  
This pot controls the level of the Alt Output.The TRS output jacks are located  
on the rear of the Master module.  
A-BTO ALT (Alt-Out Source Select)  
The Alt Out follows the Solo system.  
The Alt Out is fed from the Bus A & B signals.These signals are not affected by  
the Bus A & B main faders.  
p.41  
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3
Master section  
X-Monitor owner’s manual  
module  
(Solo Controls) Solo block diagram  
TO METER BRIDGE  
R MODULE (LOWER AREA)  
L SOLO R  
∑
∑
SOLO LEFT  
SOLO  
MIX  
AMPS  
SOLO  
AUDIO  
SOLO RIGHT  
LKBACK  
ALTERNATE OUT EXT MONITOR IN  
M3 M4  
IN  
LEFT  
RIGHT  
LEFT  
RIGHT  
SOLO CONTROL & STATUS  
INPUT  
- ACTIVE -  
OUTPUT  
SOLO  
ALT  
LEVEL  
ACTIVE  
CLEAR  
INPUT  
TB  
LEVEL  
( B )  
PRIORITY  
LAST  
PRESSED  
EXT TB  
ON  
POST  
FADER  
A-B  
TO ALT  
MIX A  
- PRE -  
MIX B  
128  
TB AUDIO  
(TO RIBBON)  
SEQUENCED  
SCENE  
SOLO  
AUDIO  
RIGHT  
TO  
LEFT  
SIDE  
EDIT  
EDIT  
-
PREVIEW  
SAFE  
SOLO  
AUDIO  
LEFT  
GROUP  
MICRO  
CARDS  
SINGLE  
SCENE  
MICRO  
UTILITY  
TAP TO  
LATCH  
-
TALK ON  
+48V  
SEQUENCE  
SCENE ON  
GO  
EXT  
MON  
IN  
TB  
SWITCH  
LOGIC  
HOLD FOR  
MOMENTARY  
MASTER  
MICRO  
INTER-  
FACE  
CARD  
-
HP  
LEVEL  
1
2
3
M
A
N
U
A
L
TALK BACK  
+48 VOLT  
OFF / ON  
INPUT &  
GROUP  
CONTROL  
4
5
6
M
U
T
LOCATED UNDER ARMREST  
E
TO  
RIGHT  
SIDE  
S
C
E
N
E
S
-
INPUT  
MICRO  
CARDS  
7
8
HEADPHONE  
OUT  
TALK BACK  
IN  
MICRO MUTE CONTROL  
p.42  
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3
Master section  
Solo features  
Solo Control System  
The X-Monitor is equipped with a powerful stereo solo system.Any input or output  
can be monitored pre-level (PFL) or after level control (AFL), as desired.The system  
may be set as additive (all channels selected on solo bus), or exclusive, so that only  
one solo switch is active at a time ("last pressed"). Input Priority Mode is switch-  
selectable.This mode gives higher priority to the Inputs and automatically de-selects  
any solo’d outputs when an Input is solo’d. When the Input is de-selected(or the  
CLEAR sw is pressed), the previously active Output solo(s) return. Individual LEDs  
indicate whether the solo system was triggered by an Input or Output. Any signal  
being solo'd appears on the dedicated left and right solo meters on the meter bridge,  
and is audible in the stereo headphone system and the Monitor outputs. Solo func-  
tions may be canceled by re-tapping any illuminated solo switch, or all solo switch-  
es may be simultaneously canceled using the Solo Clear switch.  
Solo controls  
SOLO ACTIVE (Solo status indicators)  
L E D  
Input - This Green LED illuminates whenever an Input channel is solo’d.  
L E D  
Output - This Red LED illuminates whenever an Output channel is solo’d.  
INPUT PRIORITY (Solo I/O preference)  
All solo signal sources are given equal weight. Input and Output solos can both  
be monitored simultainiously.  
Greater weight is given to Input Solos (Input channels, Common Returns, Local  
Returns) than to Output solos.  
LAST PRESSED (Solo Operating Mode)  
Solo system is in “additive” mode. Pressing a solo switch will add that channel  
to the solo bus, pressing again will remove it. As many channels as desired can be  
combined and monitored. Input Priority has control over the mix (see above).  
Solo system is in Last Pressed mode. Pressing any solo switch will clear (un-  
solo)any other solo’d. Only one source (the one last-pressed) can be monitored at  
a time. Pressing the same solo switch again will remove it from the solo system.  
POST FADER (Solo source select)  
Pre-fader signals are monitored by the Solo system. Fader, Output level con-  
trols and Mutes do not affect the signal.  
Post-fader signals are monitored.This point is after the Fader or Output level  
control and also after the Mute switch.  
SOLO ACTIVE / CLEAR (Solo tally / Master clear)  
This momentary, illuminated switch provides two functions.  
1. Solo active - When any input/output on the console is solo'd, this switch it lit up.  
2. Clear - Pressing this switch will clear (shut off) any inputs/outputs on the console  
that are solo'd.This is especially useful when the solo system is in Additive mode, to  
clear multiple solos with one button press. When in Input Priority mode, the first  
press will clear any Input solos present, the second press will clear any Output solos  
that may return.  
p.43  
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3
Master section  
X-Monitor owner’s manual  
Matrix 4  
Matrix 3  
Matrix 2  
Matrix 1  
Ext  
In  
Ext  
In  
Ext  
In  
Ext  
In  
Out  
Out  
Out  
Out  
4
3
2
1
Insert  
Insert  
Insert  
Insert  
Send  
Send  
Send  
Send  
Insert  
Insert  
Insert  
Return  
Insert  
Return  
Return  
Return  
Monitor  
Monitor  
Main  
Main  
Out  
Out  
B
OLut  
Out  
A
R
TB  
Ext  
TB  
In  
Insert  
Send  
Insert  
Send  
Out  
Insert  
Return  
Insert  
Return  
Ext Mon  
Input  
R
Ext Mon  
Input  
L
Alt  
Alt  
Out  
Out  
B
A
X–Monitor Master  
C
p.44  
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3
Master section  
Master module rear panel  
External Matrix Input connectors (1 through 4)  
These balancedTRS connectors allow external line level signals to be added to the  
four Matrix buses.Their levels are controlled by the Ext In pots located in the Matrix  
master section.  
Matrix output connectors (1 through 4)  
These balanced male XLR connectors carry the Matrix master outputs 1 - 4.  
Matrix Insert jacks (1 through 4)  
Insert Send-These ground-compensatedTRS connectors allow external gear to be  
patched into the Matrix signal path.The Insert Send jack is always active,it is fed from  
the Matrix pre-level signal.  
Insert Return- These balanced TRS connectors allow external gear to be patched  
into the Matrix signal path.When a plug is inserted into the Insert Return jack, the  
normal Matrix signal path is interupted.  
Main Out A & B output connectors  
These balanced male XLR connectors carry the Bus A & B master outputs.  
Main Out A & B Insert jacks  
Insert Send-These ground-compensatedTRS connectors allow external gear to be  
patched into the BusA & B signal paths.The Insert Send jack is always active,it is fed  
from the Bus A & B pre-fader signal.  
Insert Return- These balanced TRS connectors allow external gear to be patched  
into the Bus A & B signal path.When a plug is inserted into the Insert Return jack,  
the normal Bus signal path is interupted.  
Alt Out A & B  
These ground-compensatedTRS connectors carry the Alt A & B master outputs.  
Monitor Out L & R connectors  
These balanced male XLR connectors carry the Monitor master outputs.  
External Monitor Input connectors L & R  
These balancedTRS connectors bring external line level signals into the headphone  
system.They don’t feed any other circuits.  
p.45  
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3
Master section  
X-Monitor owner’s manual  
Master Rear Panel  
Group 9-12 Rear Panel  
Lamp  
Dim  
To Meter Bridge  
Matrix 4  
Matrix 3  
Matrix 2  
Matrix 1  
Ext  
In  
Ext  
In  
Ext  
In  
Ext  
In  
12  
11  
10  
9
Group Out  
Group Out  
Group Out  
Group Out  
Out  
Out  
Out  
Out  
4
3
2
1
12  
11  
10  
9
Insert  
Insert  
Insert  
Insert  
S
e
n
d
S
e
n
d
S
e
n
d
S
Send  
Send  
Send  
Send  
e
n
d
I
I
I
I
n
s
e
r
t
n
s
e
r
t
n
s
e
r
t
n
s
e
r
t
Insert  
Insert  
Insert  
Return  
Insert  
Return  
R
t
R
t
R
t
R
t
Return  
Return  
Monitor  
Monitor  
Main  
Main  
n
n
n
n
Out  
Out  
Out  
B
Out  
A
R
L
Local Rtn 12  
Local Rtn 11  
Local Rtn 10  
Local Rtn 9  
TB  
Ext  
TB  
In  
Insert  
Send  
Insert  
Send  
Out  
DC IN  
In • MIDI • Out  
+
1= 12V  
Insert  
Return  
Insert  
Return  
+
2= 18V  
1
6
2
7
3= AGND  
4= AGND  
5= DGND  
3
4
5
Ext Mon  
Input  
Ext Mon  
Input  
Alt  
Out  
Alt  
Out  
+
6= 48V  
–
R
L
7= 18V  
B
A
X–Monitor Master  
C
X–Monitor Group 9–12  
C
1
2
3
4
5
6
7
8
9
10  
11  
12  
SOLO L  
SOLO R  
METERBRIDGE - 14 MECHANICAL VU METERS WITH LED ILLUMINATION  
12 METERS FOR GROUP OUT , 2 FOR SOLO LEFT & RIGHT  
DUAL DC CONNECTORS FOR  
LINKING BACK-UP SUPPLY  
LOW-NOISE FAN  
FOR COOLING  
REMOVABLE LINK FOR  
ISOLATING CONSOLE  
GROUND  
STANDARD IEC  
POWER INLET  
LAMP DIM  
( ON REAR )  
90-250VAC  
50/60 HZ  
DC INPUT ( ON REAR )  
+/- 18V, +12V, +48V  
12V LAMP SOCKETS - 2 OR 4  
( ON REAR OF METER BRIDGE )  
IN • MIDI • OUT  
( ON REAR PANEL )  
CREST X-SERIES POWER SUPPLY ( REAR VIEW )  
MODEL 5A  
p.46  
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3
Master section  
Rear panel features  
On Master Module Rear Panel  
ExtTB In connector  
This bal XLR connector allows an external signal to be fed into the Talkback sec-  
tion. From there, it can be routed to any of the outputs that are fed by theTB bus.  
The Ext TB output from the FOH console can be patched into here to allow the  
FOH engineer to communicate with the stage.  
ExtTB Out connector  
This bal XLR connector can feed the internalTB signal to the outside world. Used  
in conjunction with the ExtTB In & Out of the FOH console,a two-way system can  
be set up to allow the Monitoring position to communicate with the FOH position.  
On Group Module 9-12 Rear Panel  
Lamp Dim  
This switch controls the intensity of the external little-lites plugged into the  
rear of the meterbridge. In the UP position- full voltage is applied to the jacks.The  
lamp-jacks are current limited to prevent accidents.  
In the DOWN position- voltage is applied to the lamp-jacks thru dropping  
resistors.  
Meterbridge Connector  
This 34-way socket connects to the meterbridge.The 14 meter signals(Groups 1-12, Solo  
L-R) are carried to the meterbridge as audio signals, they are rectified to drive the meters  
within the bridge.Power for the meter illumination (LED) as well as for the little-lites is also  
provided.All power feeds are current-limited.  
Midi IN and OUT  
These jacks allow the microprocessor system to communicate with MIDI gear.See the sec-  
tion on the Microprocessor for more information. Standard MIDI cabeling should be used.  
DC In  
This 7-pin connector is used to connect the power supply DC cable to the console.ONLY  
Crest approved power supplies should be used.A 25 ft DC cable is normally supplied with  
the console. If two or more supplies are used for redundant operation, a separate 3 ft DC-  
Linking cable is used to tie power supplies together.  
p.47  
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4
Microprocessor control  
X-Monitor owner’s manual  
1 2 8  
SEQUENCED  
SCENE  
EDIT  
PREVIEW  
EDIT  
SAFE  
SINGLE  
SCENE  
MICRO  
UTILITY  
SEQUENCE  
SCENE ON  
GO  
1
2
3
M
A
N
U
A
L
4
5
6
M
U
T
E
S
C
E
N
E
S
7
8
HEADPHONE AND TALKBACK JACKS  
LOCATED BELOW ARMREST  
p.48  
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4
Microprocessor control  
microprocessor controlled muting  
The Crest X-Series of Consoles* is equipped with a micro-controlled  
Mute Controller which permits the user to set-up a series of Mute Scenes,  
each controlling any combination of channels and outputs.These Scenes  
can then be recalled, either singly or in combination, to allow the opera-  
tor to easily control the mutes during a performance.  
The Mute Controller features 128 Sequenced Scenes (Patches) along with  
8 Manual Mute Scenes.The 128 Patches can be stepped through using a  
single button,or remotely activated by the use of MIDI patch-change com-  
mands.The Patches can be combined with the Manual Scenes to allow dif-  
ferent combinations of Channel mutes.  
The following is a overview of the controls and indicators of the Mute  
Controller and the Channels (see diagrams on previous page).The follow-  
ing information pertains to X-Eight consoles with Rev 1.12 firmware, and  
X-Monitor consoles with Rev 1.00 firmware.  
p.49  
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4
Microprocessor control  
X-Monitor owner’s manual  
mute control panel  
A
C
B
1 2 8  
SEQUENCED  
SCENE  
D
EDIT  
EDIT  
PREVIEW  
SAFE  
E
SINGLE  
SCENE  
MICRO  
UTILITY  
F
I
SEQUENCE  
SCENE ON  
GO  
G
1
2
M
A
N
U
A
L
3
H
4
5
6
M
U
T
E
S
C
E
N
E
S
7
8
typical input or output  
J
SAFE  
PREVIEW  
K
MUTE  
L
PK  
+8  
0
–6  
SIG  
p.1  
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4
Microprocessor control  
Mute controller  
A)Up/Down  
Each press of these switches increments or decriments the Patch Display (B).Holding  
either button down will allow quickly scrolling up or down.The buttons are also used  
to select the parameters and settings of the system while in Utility mode.  
B)Display  
This 4-character alpha-numeric display normally shows the current Patch (1 through  
128) being recalled. It is also used to display the parameters and settings of the sys-  
tem while in Utility mode.  
C)Edit Preview  
Pressing this switch puts the system into Edit/Preview mode, allowing the operator  
to view and change the contents of any selected Mute Scene.The internal red LED  
will blink while in this mode, along with the status LEDs (J) of any channels assigned  
to the selected Mute Scene. Pressing a Channel Mute Sw (K) will add or remove a  
channel from that Scene. Pressing the Edit/Preview switch again will exit back to nor-  
mal operating mode.  
D)Edit Safe  
Pressing this switch puts the system into Edit Safe mode, allowing the operator to  
view and change the contents of the SAFE memory.The internal green LED will blink  
while in this mode, along with any channels assigned to the Safe Scene. Pressing a  
Channel Mute Sw (K) will add or remove a channel from the Safe Scene. If a channel  
is included in the Safe Scene, it can’t be muted from a Mute Scene.This allows the  
operator to remove a channel all Scenes without having to edit any of the Scenes  
themselves. Pressing the Edit Safe switch again will exit back to normal operating  
mode.  
E)Single Scene  
There are 9 mute sources available from the Mute Controller: the 8 Manual Mute  
Scenes (H), and the Sequence Scene (G). Normally any or all of theses 9 sources can  
be active at one time, which allows the operator to combine different mute patterns.  
The Single Scene switch,when depressed,permits only 1 of the 9 sources to be active  
at one time.  
F)Micro Utility  
This latching switch will put the system into Utility mode. The operator can then  
access and view the various parameters and functions of the controller using the  
Up/Down buttons (A) and the Display (B).  
G)Sequence Scene  
This switch activates the Sequenced Scene (Patch).The display (B) shows which of  
the 128 possible Scenes are active.  
H)Manual Mutes  
These 8 switches activate the associated Manual Mute Scene. Additionally, these  
switches, along with (G), select which Mute Scene is being edited when in Edit  
Preview Mode.  
p.2  
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4
Microprocessor control  
X-Monitor owner’s manual  
mute control panel  
A
B
1 2 8  
SEQUENCED  
SCENE  
D
C
E
EDIT  
EDIT  
PREVIEW  
SAFE  
SINGLE  
SCENE  
MICRO  
UTILITY  
F
I
SEQUENCE  
SCENE ON  
GO  
G
H
1
2
3
M
A
N
U
A
L
4
5
6
M
U
T
E
S
C
E
N
E
S
7
8
typical input or output  
J
SAFE  
PREVIEW  
K
MUTE  
L
PK  
+8  
0
–6  
SIG  
p.52  
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4
Microprocessor control  
Mute controller  
I)GO  
Each press of this switch increments the Sequenced Mutes by one,the display (B) will  
reflect this.Also used to activate the displayed Scene when an Up/Down (A) button  
was used to scroll to a new Scene. In this case, an "*" will be displayed as the first  
character in the display to indicate that the displayed number is not currently the  
active Scene. Pressing GO will put that displayed Scene into place and clear the "*"  
from the display.  
NOTE: All of the above actions will take place, but the displayed Sequenced Scene  
will not be active (mutes not enabled) unless the Sequence Scene switch (G) is lit.  
Each press of these switches increments or decriments the Patch Display (B).Holding  
either button down will allow quickly scrolling up or down.The buttons are also used  
to select the parameters and settings of the system while in Utility mode.  
p.53  
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4
Microprocessor control  
X-Monitor owner’s manual  
mute control panel  
A
B
1 2 8  
SEQUENCED  
SCENE  
D
C
E
EDIT  
EDIT  
PREVIEW  
SAFE  
SINGLE  
SCENE  
MICRO  
UTILITY  
F
I
SEQUENCE  
SCENE ON  
GO  
G
H
1
2
3
M
A
N
U
A
L
4
5
6
M
U
T
E
S
C
E
N
E
S
7
8
typical input or output  
J
SAFE  
PREVIEW  
K
MUTE  
L
PK  
+8  
0
–6  
SIG  
p.54  
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4
Microprocessor control  
Channel mute controls  
J)Status LED  
This bi-color LED, associated with each controlled Mute, shows the condition of that  
mute. One of 5 possible states is possible:  
1)Off- The channel is not controlled by the Mute Controller.  
2)Steady Red- The channel is being muted by a Mute Scene.  
3)Steady Green- The channel is in Safe Mode, can’t be muted by any Scene.  
4)Blink Red- The system is in Edit Preview Mode and the channel is in the currently  
selected Scene (only 1 Scene active at a time).  
5)Blink Green-The system is in Edit Safe Mode and the channel is included in the Safe  
Scene.  
K)Mute Switch  
This momentary switch toggles the Channel’s local mute and is also used to assign /  
un-assign channels to Mute and Safe Scenes when in the Edit Modes.  
L)Mute LED  
This internal Red LED will illuminate whenever the channel is muted, either locally  
or by a Mute Scene.  
NOTE: If a channel is already locally muted when a relevant Mute Scene is activated, this LED  
will remain lit. 2 sources are now telling the channel to mute; the Local Mute and the Mute  
Scene. If the Mute Sw (K) is pressed once, the local mute will be cleared, but no apparent  
change will occur.The Mute LED (L) will still be lit, and the Status LED (J) will still be steady  
Red.At this point there is only one source telling the channel to mute; the Mute Scene. If the  
Mute Scene is then disabled, the channel will un-mute because the Local Mute was previous-  
ly cleared.The user should be aware of this fact:The Local Mutes can toggle invisibly behind  
a Mute Scene. For an even number of presses on the Mute Sw (K), the Local Mute will return  
to its original state,an odd number of presses will change the Local Mute to its opposite state.  
Each press of this switch increments the Sequenced Mutes by one, the display (B) will reflect  
this. Also used to activate the displayed Scene when an Up/Down (A) button was used to  
scroll to a new Scene. In this case, an "*" will be displayed as the first character in the display  
to indicate that the displayed number is not currently the active Scene. Pressing GO will put  
that displayed Scene into place and clear the "*" from the display.  
NOTE:All of the above actions will take place, but the displayed Sequenced Scene will not be  
active (mutes not enabled) unless the Sequence Scene switch (G) is lit. Each press of these  
switches increments or decriments the Patch Display (B). Holding either button down will  
allow quickly scrolling up or down.The buttons are also used to select the parameters and  
settings of the system while in Utility mode.  
p.55  
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4
Microprocessor control  
X-Monitor owner’s manual  
mute control panel  
A
B
1 2 8  
SEQUENCED  
SCENE  
D
C
E
EDIT  
EDIT  
PREVIEW  
SAFE  
SINGLE  
SCENE  
MICRO  
UTILITY  
F
I
SEQUENCE  
SCENE ON  
GO  
G
H
1
2
3
M
A
N
U
A
L
4
5
6
M
U
T
E
S
C
E
N
E
S
7
8
typical input or output  
J
SAFE  
PREVIEW  
K
MUTE  
L
PK  
+8  
0
–6  
SIG  
p.56  
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4
Microprocessor control  
Mute scenes  
There are nine possible Scene sources: Manual Mute Scenes 1 thru 8, and the  
Sequence Scene. The Sequence Scene button (G) is the enable switch for the 128  
possible Sequenced Scenes.The 8 Manual Mutes are totally independent of the 128  
Sequenced Scenes, giving the system a total of 136 possible mute patterns. Each of  
the 136 patterns can consist of any combination of Channel and Output mutes, all of  
the nine possible sources can be combined to create additional patterns.  
Creating a Mute Scene (or Editing an existing one):  
1) Press the Edit Preview button (C), it will begin to blink, indicating that the system  
is in Edit Preview Mode.  
2) Select a Scene to Edit: The system will automatically choose a Scene to edit,  
depending on the status of the system when Edit Preview was selected. If the system  
was in Single Scene Mode (switch E depressed), the Mute Scene that was currently  
active will be selected to edit. If the system was in Multiple Scene Mode (switch E  
not depressed), the Sequence Scene will be automatically selected for editing. If a dif-  
ferent Scene than the default is to be edited, that scene should now be chosen by  
pressing 1 of the 9 possible Mute Scene buttons (G & H), it will illuminate to show  
its selection. Only one scene can be selected for editing, the condition of the Single  
Scene button (E) has no effect in Edit mode.  
3) If Sequence Scene is selected: If Sequence Scene (G) was selected, then the  
Up/Down (A) buttons should be used to select the desired Sequenced Scene (Patch)  
to be edited.The Display (B) will indicate which of the 128 possible patches is being  
worked on. Note:When returning to Normal Mode, the system will revert back to  
the Patch that was in place before entering Edit Mode.  
4) Assign channels to the Scene:Any channels currently assigned to the Scene being  
edited will have their Status LEDs (J) blinking Red. Pressing the associated Mute Sw  
(K) will assign / de-assign that channel to the Scene.  
5) Clearing a Mute Scene: If you wish to clear all assigned channels from a Scene,  
press and hold the Edit Safe (D) button.After a brief delay, the display will change to  
CLR?; continue to hold the button down until the display shows CLRD.All channels  
assigned to that Scene will be de-assigned and you can start fresh.  
6) Saving your edit: Once you have a Scene configured the way you want it, either  
press the blinking Edit Preview (C) button to exit Edit Mode and return to Normal  
Mode, or select another Scene to edit by pressing its associated switch (H), or, if  
Sequence Scene was selected, press the Up/Down (A) keys to select a new Patch to  
edit.There is no STORE button to press, the changes take place immediately while  
editing, and the Scene is saved automatically when a new Scene is selected or upon  
exiting Edit mode. NOTE:This immediate change will be most apparent when editing  
a scene that is currently the active scene (the Mute Scene that was ON when you  
entered Edit mode).The Mute LED (L) will change along with the Status LED (J) as a  
channel is added or removed from the scene during editing.  
p.57  
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4
Microprocessor control  
X-Monitor owner’s manual  
mute control panel  
A
B
1 2 8  
SEQUENCED  
SCENE  
D
C
E
EDIT  
EDIT  
PREVIEW  
SAFE  
SINGLE  
SCENE  
MICRO  
UTILITY  
F
I
SEQUENCE  
SCENE ON  
GO  
G
H
1
2
3
M
A
N
U
A
L
4
5
6
M
U
T
E
S
C
E
N
E
S
7
8
typical input or output  
J
SAFE  
PREVIEW  
K
MUTE  
L
PK  
+8  
0
–6  
SIG  
p.58  
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4
Microprocessor control  
Copying a mute scene  
Mute Scenes can be copied from a Sequenced Scene (Patch) to a Manual Mute Scene. Manual  
Mutes cannot be copied to Sequenced Scenes or to each other.To copy a Sequenced Scene  
into a Manual Mute Scene, follow the steps outlined below.  
1) Press the Edit Preview button (C), it will begin to blink, indicating that the system  
is in Edit Preview Mode.  
2) Select Sequenced Scenes by pressing the Sequence Scene (G) button; it will illu-  
minate.  
3) Scroll to the Scene to be copied using the Up/Down (A) keys to change the  
Display (B).  
4) Hold down the Sequence Scene button.The display will show "Cpy?".  
5) Still holding down the Sequence Scene button (G), now also press the desired  
Manual Mute switch (H). The display will show "Copy", and the Sequenced Scene  
Mute pattern is copied to the target Manual Mute,over-writing whatever pattern may  
have originally been there.  
6)You can now select the newly created Manual Mute Scene for editing by pressing  
its select switch (G).The copied Mute pattern will be there, you can use that as a  
starting point for your edits.  
7) Exit back to Normal mode when you’re done by pressing Edit Preview (C) again.  
NOTE:You can use this copy feature as a way to "Back-up" your Manual Mute Scenes,  
even though you can’t copy from Manual Mutes to any other Mutes. Instead, use the  
highest numbered Patches (120 to 127) to create the original versions of your  
Manual Mute Scenes.Then use the copy function to transfer those patterns into the  
Manual Mutes.You can always go back to the originals (120 to 127) and re-load (copy)  
them into the Manual Mutes whenever needed.You can also use Patch 128 as an All  
Mute memory. Program it with all channels muted, you can then copy it to a Manual  
Mute when you need to start a Scene with all channels muted instead of all channels  
un-muted ( you already have a way to start a Scene with all channels un-muted, you  
can hold down the Edit Safe button to clear all mutes in a Scene when editing).  
p.59  
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4
Microprocessor control  
X-Monitor owner’s manual  
mute control panel  
A
B
1 2 8  
SEQUENCED  
SCENE  
D
C
E
EDIT  
EDIT  
PREVIEW  
SAFE  
SINGLE  
SCENE  
MICRO  
UTILITY  
F
I
SEQUENCE  
SCENE ON  
GO  
G
H
1
2
3
M
A
N
U
A
L
4
5
6
M
U
T
E
S
C
E
N
E
S
7
8
typical input or output  
J
SAFE  
PREVIEW  
K
MUTE  
L
PK  
+8  
0
–6  
SIG  
p.60  
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4
Microprocessor control  
The Safe Scene  
There may be occasions when a channel needs to be made "Safe" from all programmed  
mutes.This may occur during a show when an on-stage microphone needs to be used as an  
announce mic, or a switch-over has to be made to a backup channel due to some technical  
difficulty.The Safe Scene allows a channel to be removed from the control of all Mute Scenes  
without having to edit any of the scenes. Once a channel is assigned to the Safe Scene, it will  
ignore all Mute Scene commands.The Mute Scenes themselves are not altered, it’s only the  
channel’s response that has been changed.This allows temporary changes to be made to a  
show, due to nightly needs, without having to go in and edit the programmed scenes.You’ll  
probably need the original scenes, as is, the next time the show is performed. NOTE:The  
Local mute command is not affected by this Safe, the Local mute is always effective.  
The Safe Scene is always active, if a channel is assigned to the Safe Scene, it will ignore any  
mute commands from a Mute Scene.The Status LED (J) of a channel will be a steady Green  
color if a channel is Safe.  
Editing the Safe Scene:  
1) Enter Edit Safe Mode: Press the Edit Safe button (D), it will begin to blink, indi-  
cating that the system is in Edit Safe Mode.  
2) Select a channel to safe: Pressing the Mute Sw (K) of a channel will assign/de-  
assign a channel to the Safe Scene.The status LED (J) of any channel assigned to the  
Safe Scene will blink Green. If a channel is currently muted because of a Mute Scene,  
assigning it to the Safe Scene will immediately un-mute it.  
3) Clearing the Safe Scene: If you wish to clear all assigned channels from the  
Safe Scene, press and hold the Edit Preview (C) button.After a second or two, the  
display will change to CLR?. Continue to hold the button down until the display  
shows CLRD.All channels assigned to the Safe Scene will be de-assigned and you can  
start fresh.  
4) Exit Edit Safe Mode: Press the blinking Edit Safe button (D) again. It will stop  
blinking and the system will return to Normal mode.Any blinking Green status LEDs  
will turn to steady Green indicating that the channel is in Safe mode. If a channel was  
previously being muted by only a Mute Scene (status LED was steady Red),but is now  
"Safe", the status LED will show steady Green and the Mute LED (L) will be off. If the  
channel was being muted by a Local mute, it will remain muted.The Safe Scene does  
not affect Local Mutes.  
NOTE:Assigning a channel to the Safe Scene can be done quickly if an emergency  
arises and a programmed channel has to be un-muted. It’s a simple 3 step process:  
1) Press the Edit Safe Sw to enter Edit Safe mode  
2) Press the Mute Sw of the desired channel-The channel will un-muted at this point.  
3) Press the Edit Safe Sw again to return to Normal mode  
p.61  
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4
Microprocessor control  
X-Monitor owner’s manual  
mute control panel  
1 2 8  
SEQUENCED  
SCENE  
EDIT  
PREVIEW  
EDIT  
SAFE  
SINGLE  
SCENE  
MICRO  
UTILITY  
SEQUENCE  
SCENE ON  
GO  
1
2
3
M
A
N
U
A
L
4
5
6
M
U
T
E
S
C
E
N
E
S
7
8
HEADPHONE AND TALKBACK JACKS  
LOCATED BELOW ARMREST  
p.62  
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4
Microprocessor control  
Utilities  
The Mute Controller has a number of parameters that the user can change.A Utility Mode  
is provided for accessing these settings.The following is a current list of parameters, along  
with their default and other possible settings.The default setting is shown UNDERLINED.An  
explanation follows on how to review or change the different settings.  
Display  
Meaning  
Settings  
uP  
Micro Processor  
ON or OFF  
Determines whether the Mute System is ON or OFF.When OFF, the entire Mute Scene sys-  
tem is disabled, only the Local mutes will operate.This setting can be used if "Traditional"  
console operation is desired (i.e. No programmed scenes are wanted).  
M Ch  
MIDI Channel  
01 to 16  
Sets the MIDI channel that the Controller uses to communicate to the MIDI world.The Mute  
Controller can send and receive MIDI Program changes, MIDI dumps etc. It does so on this  
channel.  
Lock  
Edit Lock  
OFF or ON  
If set to ON, prevents any changes to be made to any Mute Scene. If Edit Preview is pressed  
when LOCK is ON, "Lock" is displayed and the system will not enter Edit Mode.  
Dmp?  
MIDI Dump  
When activated, the contents of all the Mute Scenes are transmitted via the MIDI Out jack  
using SysEx protocol.A librarian or archiving MIDI program can be used to store the Mute  
settings externally. Note: Loading of external data via SysEx command is always active.  
Base  
MIDI Base  
01 or 00  
There are 128 possible MIDI numbers. Do you want to start counting at 01 and count up to  
128, or start at 00 and count up to 127 ? Different MIDI devices do it either way.You get to  
choose.  
Ext  
External Ctrl  
OFF or ON  
Normally, the Mute System uses its internal Mute Scenes to control the Console mutes.  
Alternately, MIDI Note Commands can be used to control the channel mutes directly.When  
Ext is ON, the Display(B) will show "Ext", and the normal Mute Scenes will be disabled.The  
Controller will now respond only to externally received Note On/Off commands (via MIDI  
In jack).  
Pgm  
Program Chg  
ON or OFF  
The Mute Controller normally sends a MIDI Program change command every time the  
RECALL (I) button is pressed, corresponding to the Patch number shown in the Display.Also,  
if a MIDI Pgm Chg is received, the Controller will respond by recalling the Patch Mute match-  
ing that Pgm Chng. Setting Pgm to OFF disables the sending and receiving of MIDI Pgm  
Changes.  
p.63  
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4
Microprocessor control  
X-Monitor owner’s manual  
Mute control panel  
A
B
1 2 8  
SEQUENCED  
SCENE  
D
C
E
EDIT  
EDIT  
PREVIEW  
SAFE  
SINGLE  
SCENE  
MICRO  
UTILITY  
F
I
SEQUENCE  
SCENE ON  
GO  
G
H
1
2
3
M
A
N
U
A
L
4
5
6
M
U
T
E
S
C
E
N
E
S
7
8
p.64  
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1
Microprocessor control  
Changing and reviewing the utility changes  
The Utility settings can be accessed by entering Utility Mode. Once there, the different para-  
meters can be changed to suit user’s preferences. The changes stay in effect until they are  
again modified by the user, or a System Reset is performed (detailed later) which changes  
them all back to their default settings.  
Utility Mode:  
1) Enter Utility Mode: Press the Micro Utility button (F), it is a latching switch,  
and the system will stay in Utility Mode while this button is depressed.The Display  
(B) now shows the first Parameter - " uP " of the Parameter List.  
2) Select a Parameter to edit: Use the Up/Down keys (A) to scroll thru the list  
of available Parameters.  
3) View the current Setting: Press the GO (I) button. The Display will change  
from showing the Parameter to showing the Parameters current setting.  
4) Changing the setting:While the Display is showing Parameter Settings (not the  
Parameter itself), the Up/Down keys will scroll thru the list of possible settings for  
that Parameter. Use the keys to select the new setting and press the GO button  
again.The Display will briefly show " **** ", the displayed setting will be activated and  
the Display will go back to showing the Parameter. Note:The only way to get back  
to showing the Parameter is to press the GO button, so even if no change is desired,  
the GO button must be pressed. Make sure the display is showing the desired  
setting when you press GO. You are now back at Step 2, and can continue to  
select and change Parameters.  
5) Exit Utility Mode: Once you’re done,press and release the Micro Utility (F) key,  
the Mute System returns to Normal Mode with the new settings in place.  
p.65  
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5
Power supply  
X-Monitor owner’s manual  
FrontView  
On  
5A  
+
18V  
-
+
12V  
+
48V  
Console Power Supply  
18V  
S
S
E
E
Off  
R
I
RearView  
MODEL:  
CAUTION  
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
AVIS  
:
RISQUE DE CHOC ÉLECTRIQUE—NE PAS OUVRIR  
WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK  
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.  
ATTENTION! POUR ÉVITER LE RISQUE D'INCENDIE OU DE  
CHOC ÉLECTRIQUE, NE PLACEZ PAS CET APPAREIL SOUS LA  
PLUIE OU  
Á
L'HUMIDITÉ  
CONSOLE GND  
CHASSIS GND  
18V  
12V  
48V  
@
@
@
5A  
Designed & manufactured in the USA by:  
+
+
4A  
.75A  
PIN  
PIN  
PIN  
PIN  
PIN  
PIN  
PIN  
1
2
3
4
5
6
7
+12V  
+18V  
2
1
6
ANALOG GND  
ANALOG GND  
DIGITAL GND  
+48V  
Crest Audio Inc.  
100 Eisenhower Dr.  
Paramus, New Jersey 07652 USA  
http://www.crestaudio.com  
5
4
3
-18V  
p.65  
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5
Power supply  
power supply usage  
Console and power supply grounding  
Console chassis ground is electrically connected to: the audio ground, pin-1 of XLR connectors,  
the sleeves of 1/4” sockets,and to the terminal CONSOLE GROUND at the rear of the power supply.  
The AC third-wire connection in the power supply cable connects the metal chassis of the  
power supply to safety ground.  
Rack-mounting—the power supply ground may transfer to the rack case through the front fix-  
ing screws, though this connection is not reliable.  
Sound system use—the grounding requirements may call for the ground link to be disconnect-  
ed.This is permissible only when an alternative ground path has been provided. If in doubt seek  
the advice of an experienced electrician.  
Redundant power supplies  
The console power supply can be considered the single most important component in an entire  
sound system. If a power amplifier, a signal processor or a console input goes down in the mid-  
dle of a show,the show can still go on.But if the console loses its power supply,the show is over.  
For this reason, it is always good practice to incorporate redundant power supplies for mixing  
consoles used in professional sound reinforcement applications.  
This should be considered a high priority even when using a very reliable power supply. In even  
the most carefully designed sound systems,each component runs the risk of failure at sometime  
or another.  
Crest Audio uses two methods for attaching redundant power supplies to consoles. In both  
methods, the two (or more) power supplies should be kept on while the console is in use to  
insure a smooth transition in the event that one shuts off.  
If one power supply drops in voltage or shuts off completely, the other unit takes over without  
any interruptions or audible glitches.As an added precaution,the two (or more) power supplies  
can be fed by separate AC lines.This will guarantee that the console does not shut off if one of  
the AC lines goes down.  
Multiple power supplies in-series  
Crest Audio X-Series consoles use this method for backup. Since each power supply includes  
voltage switching circuitry, more than two units can be hooked up in series. A DC-Link cable  
ties the power supplies together. Normally two supplies are used for redundant (fail-safe) oper-  
ation, but there is no real limit to the number of supplies that can be used.A daisy-chain can be  
constructed using DC-Link cables to tie each supply to the next.At the end of the chain, the  
last power supply uses the normal DC power cable to tie the entire power supply chain to the  
Console.  
p.67  
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5
Power supply  
X-Monitor owner’s manual  
On  
5A  
+
18V  
-
+
12V  
+
48V  
Console Power Supply  
18V  
S
S
E
E
Off  
R
I
MODEL:  
CAUTION  
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
AVIS  
:
RISQUE DE CHOC ÉLECTRIQUE—NE PAS OUVRIR  
WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK  
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.  
ATTENTION! POUR ÉVITER LE RISQUE D'INCENDIE OU DE  
CHOC ÉLECTRIQUE, NE PLACEZ PAS CET APPAREIL SOUS LA  
PLUIE OU  
Á
L'HUMIDITÉ  
CONSOLE GND  
CHASSIS GND  
18V  
12V  
48V  
@
@
@
5A  
Designed & manufactured in the USA by:  
+
+
4A  
.75A  
PIN  
PIN  
PIN  
PIN  
PIN  
PIN  
PIN  
1
2
3
4
5
6
7
+12V  
2
1
+18V  
ANALOG GND  
ANALOG GND  
DIGITAL GND  
+48V  
Crest Audio Inc.  
100 Eisenhower Dr.  
Paramus, New Jersey 07652 USA  
http://www.crestaudio.com  
5
4
3
6
-18V  
p.68  
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5
Power supply  
Power supply usage  
Supply identification  
The type of power supply can be identified by the model number shown on the back of the  
chassis and panel label.  
Power requirements  
The X-Series power supplies have certain electrical requirements for proper operation.If possible  
the power supply should be connected to a dedicated circuit. Should any other appliance on the  
same circuit draw enough current to overload the circuit,the breaker or fuse will trip causing loss  
of power to the console.  
The power switch on the supply front panel is also a circuit breaker; there is no power fuse.  
Should the supply ever shut down, or trip at start up, simply toggle the switch to the off posi-  
tion and then push on again.  
Ground linking  
SAFETY CONSIDERATIONS—each new power supply is shipped with the AC third-wire ground con-  
nected to the console chassis ground.The connection is made at the rear of the power supply  
unit.This is necessary for safety reasons so that exposed metal parts are grounded. In the event  
of a live conductor making contact with the console chassis or the power supply chassis then the  
current will flow to ground without a safety hazard arising.  
Uninterruptible grounding—in a fixed installation for example,make a connection directly to the  
console chassis from the safety ground. Disconnect the ground link on the rear of the power  
supply.This disconnects console ground from power supply AC third-wire ground which could  
possibly create a hum-loop.  
Twin-supply operation  
When twin-supplies (or more) are in use for automatic back-up, then the ground links on both  
supplies should be fitted.  
In a situation where the safety ground to the console chassis has been connected and the ground  
path via the power supply is causing a hum-loop, then disconnect the ground links on both  
power supplies.  
p.69  
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5
Power supply  
X-Monitor owner’s manual  
A
B
C
On  
5A  
+
18V  
-
+
12V  
+
48V  
Console Power Supply  
18V  
S
S
E
E
Off  
R
I
D
E
F
G
MODEL:  
CAUTION  
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
AVIS  
:
RISQUE DE CHOC ÉLECTRIQUE—NE PAS OUVRIR  
WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK  
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.  
ATTENTION! POUR ÉVITER LE RISQUE D'INCENDIE OU DE  
CHOC ÉLECTRIQUE, NE PLACEZ PAS CET APPAREIL SOUS LA  
PLUIE OU  
Á
L'HUMIDITÉ  
CONSOLE GND  
CHASSIS GND  
18V  
12V  
48V  
@
@
@
5A  
Designed & manufactured in the USA by:  
+
+
4A  
.75A  
PIN  
PIN  
PIN  
PIN  
PIN  
PIN  
PIN  
1
2
3
4
5
6
7
+12V  
+18V  
2
1
ANALOG GND  
ANALOG GND  
DIGITAL GND  
+48V  
Crest Audio Inc.  
100 Eisenhower Dr.  
Paramus, New Jersey 07652 USA  
http://www.crestaudio.com  
5
4
3
6
-18V  
p.70  
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5
Power supply  
Power supply Controls  
Feature identification  
The various switches, connectors, indicators and controls of the X-Series power supply are  
called out and described below.  
Front Panel  
A) Power switch. Used to turn the unit ON and OFF, it also acts as the circuit breaker for the  
supply. In the case of internal faults or overloads, the breaker will automatically switch to the  
OFF position.  
B) ExhaustVents.There is an internal fan mounted on the rear of the unit.The fan brings cool air  
in from the back and exhausts it through these front vents.To insure proper cooling,both these  
vents and the rear fan should be kept clear of any obstructions.  
C) DC Indicator LEDs.These four green LEDs show the status of the DC outputs of the supply.  
When illuminated, they indicate that the associated DC voltage is OK.  
Rear Panel  
D) DC Output Connectors.These two parallel-wired connectors are used to connect the DC  
output of the supply to the Console, either connector can be used.The spare connector is  
used when a backup supply is also connected to the Console. For power supply to Console  
connection, use the normal 25ft male-to-female cable.When attaching a spare supply, use the  
4ft male-to-male DC-Link cable.  
E) Ground Link.This terminal block makes both the Console Ground and PS Chassis Ground  
available for connection.Normally a shorting-link is provided that ties the two grounds togeth-  
er.The Console Gnd is the Audio Ground (0 volts) of the power supply, the Chassis Gnd is  
the case of the PS chassis. Certain situations may arise where a hum-loop may occur due to  
multiple ground paths being present in a system.Removing this shorting-link may solve a hum  
problem by breaking one of those paths.NOTE:Removing this shorting-link does NOT lift the  
PS chassis from theAC third-wire ground.The chassis isALWAYS tied to the third-wire ground  
of the AC inlet connector and is there for AC shock protection. If an internal fault occurs in  
the power supply that puts dangerous voltage on the chassis, this third-wire connection is  
there to shunt that potentially dangerous voltage toAC ground.That safety connection should  
never be tampered with.  
F) Cooling Fan / Filter. A quiet constant-speed fan draws cooling air in through the external fan-  
filter and exhausts the heated air through the front panel vents.The filter should be cleaned  
whenever dust buildup is observed.The snap-off cover can be removed to gain access to the  
filter.The filter (foam) can be cleaned by rinsing with plain water or by vacuuming.  
G) AC Inlet.This standard 15-amp IEC connector is used to bring the localAC mains voltage into  
the power supply.The power supply is designed to work with any standard voltage used world-  
wide;100V to 240V 50/60 Hz.  
p.71  
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Crest Audio Inc.  
16-00 Pollitt Dr., Fairlawn NJ 07410 USA  
TEL: 201.909.8700 FAX: 201.909.8744  
www.crestaudio.com  
v. 0.9  
08/17/01  
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