Extron electronic Music Mixer MIX 301 User Manual

User’s Manual  
MIX 301  
3-channel Audio Mixer  
Extron USA - West Extron USA - East Extron Europe  
Extron Asia  
Extron Japan  
Extron China  
Extron Middle East  
Headquarters  
+800.633.9876  
+800.3987.6673  
+800.7339.8766  
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+81.3.3511.7656 FAX  
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+971.4.2991800  
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68-1048-01 Rev. B  
Inside USA / Canada Only  
Inside Europe Only  
Inside Asia Only  
Inside China Only  
+800.633.9876  
Inside USA / Canada Only  
11 08  
+1.919.863.1794  
+1.919.863.1797 FAX  
+31.33.453.4040  
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+65.6383.4664 FAX  
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+86.21.3760.1566 FAX  
+1.714.491.1500  
+1.714.491.1517 FAX  
© 2008 Extron Electronics. All rights reserved.  
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FCC Class A Notice  
This equipment has been tested and found to comply with the limits for a  
Class A digital device, pursuant to part 15 of the FCC Rules. These limits are  
designed to provide reasonable protection against harmful interference when the  
equipment is operated in a commercial environment. This equipment generates,  
uses and can radiate radio frequency energy and, if not installed and used in  
accordance with the instruction manual, may cause harmful interference to radio  
communications. Operation of this equipment in a residential area is likely to  
cause harmful interference, in which case the user will be required to correct the  
interference at his own expense.  
N
This unit was tested with shielded cables on the peripheral devices. Shielded  
cables must be used with the unit to ensure compliance.  
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Introduction  
The MIX 301 is a three-input, one-output VersaTools line level  
audio mixer. The MIX 301’s features include the following:  
• Recessed trim potentiometers on the front panel for individual  
input gain adjustments (from mute to +20 dB)  
• Compact 1U, one-eighth rack, VersaTools metal enclosure  
• Power indicators on both front and back panels  
• Several mounting options, including rack mounting in an  
Extron VersaTools or standard 1U rack shelf  
• Three mono, balanced or unbalanced audio inputs  
• One mono, balanced audio output  
• Captive screw connections for ease of installation  
O
N
FM  
O
M
X
R
S
A
TT  
W
20  
V
T
PU  
0V  
UT  
M
10  
O
E
FI  
D
70  
I
PL  
O
A
M
C
hm  
T
C
E
4/8  
o
V
IR  
12  
D
IR  
C
Rx  
B
Tx  
/IR  
LC  
P
A
S-  
2/  
TS  
23  
PU  
3
R
I
N
E
PR  
A
M
O
DI  
L
4
A
2
U
T
PU  
IN  
U
T
O
NE  
LI  
L
1
L
IX  
M
X/  
A
U
JU  
S
T
A
D
d
B
2
-4  
T
O
dB  
O
O
+
24  
R
A
U
DI  
EL  
R
L
O
EV  
N
E
N
O
LI  
TS  
PU  
M
IN  
5
U
DI  
A
4
B
V
TS  
G
PU  
UT  
O
O
R
Mono Amplified Output  
Y
C
H
TS  
PU  
IN  
E  
Hz  
-60  
Extron  
50  
V
40  
0-2  
10  
1
AUX/MIX  
Input  
X.  
MA  
A
1.0  
MLS 406MA  
MediaLink Switcher  
3
N
1
2
IN  
IN  
1
L
30  
T
U
E
N
IX  
N
M
O
A
H
IX  
C
R
M
3
E
X
I
M
Extron  
MIX 301  
3 Channel  
Mixer  
MAX  
12V  
0.5a  
Speakers  
3
0
0
H
C
3
0
0
H
C
Wireless  
Microphone System  
Wireless  
Microphone System  
IC  
M
T
UT  
P
U
O
1
0
1
E
P
E
IN  
R
E
T
L
L
IE  
IF  
M
M
O
M
O
T
A
L
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E
P
I
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P
IC  
U
M
IN  
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V
0
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1
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/
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W
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V
.5  
2
M
1
a
0
MIC to Line  
Preamplifier  
Microphone  
MIX 301 • Introduction  
1
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Installation and Operation  
Mounting the MIX 301  
The MIX 301 can be set on a table, mounted on a rack shelf,  
mounted on the back of the rack, mounted under a desk or table,  
or installed on a projector mount.  
Tabletop use  
The MIX 301 comes with four, self-adhesive rubber feet (not  
attached). Follow these instructions for a tabletop installation:  
1.  
Attach the rubber feet to the underside of the MIX 301 near  
the corners of the unit.  
2.  
Place the MIX 301 unit in the desired location.  
UL rack mounting guidelines  
The following Underwriters Laboratories (UL) guidelines  
pertain to the safe installation of the MIX 301 in a rack.  
1.  
Elevated operating ambient temperature — If installed in  
a closed or multi-unit rack assembly, the operating  
ambient temperature of the rack environment may be  
greater than room ambient temperature. Therefore,  
install the MIX 301 in an environment compatible with the  
maximum ambient temperature (Tma = +122 °F, +50 °C)  
specified by Extron.  
2.  
3.  
4.  
Reduced air flow — Install the equipment in a rack so that  
the amount of air flow required for safe operation of the  
equipment is not compromised.  
Mechanical loading — Mount the equipment in the rack  
so that a hazardous condition is not achieved due to  
uneven mechanical loading.  
Circuit overloading — Connect the equipment to the  
supply circuit and consider the effect that circuit  
overloading might have on overcurrent protection and  
supply wiring. Appropriate consideration of equipment  
nameplate ratings should be used when addressing this  
concern.  
5.  
Reliable earthing (grounding) — Maintain reliable  
grounding of rack-mounted equipment. Pay particular  
attention to supply connections other than direct  
connections to the branch circuit (e.g. use of power strips).  
2
MIX 301 • Installation and Operation  
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Rack installation  
The MIX 301 can be rack mounted using either the RSF 123  
VersaTools 19" 1U rack shelf (Extron part #60-190-20), the RSB 123  
basic VersaTools rack shelf (Extron part #60-604-20), an RSU 129  
standard universal 1U rack shelf (Extron part #60-190-01), or an  
RSB 129 1U basic rack shelf (Extron part #60-604-01). Figure 1  
shows the VersaTools rack shelf, and figure 2 shows a standard  
rack shelf. On the standard rack shelf, there are eight mounting  
locations at the front of the shelf or eight at the rear of the shelf.  
1.  
Remove the rubber feet from the unit, if previously  
installed.  
2.  
Mount the unit on the rack shelf, using two 4-40 x 3/16"  
screws. These screws go into holes on the underside of the  
unit near the left-front and right-rear corners.  
Only products in the VersaTools line can be mounted on  
a VersaTools rack shelf.  
3.  
Install blank panels (included with Extron part #60-190-xx,  
optional with Extron part #60-604-xx) or other units on the  
rack shelf.  
VersaTools  
Rack Shelf  
DISTRIB  
U
TION AMPLIFIER  
Quarter Rack Width  
False Front Face Plate  
Eighth Rack Width  
False Front Face Plate  
(2) 4-40 x 3/16"  
Screws  
Figure 1 — Mounting the MIX 301 on a VersaTools  
rackshelf  
3
MIX 301 • Installation and Operation  
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Installation and Operation, cont’d  
DI  
S
TRIB  
UT  
ION AMPLIFIER  
M
D
D
A
IS  
T
S
N
R
IB  
E
A
U
R
T
IO  
I
E
S
M
P
L
IF  
IE  
R
Figure 2 — Mounting the MIX 301 on a standard  
1U rack shelf  
Back of the rack installation  
The MIX 301 can be conveniently mounted on the rear of a rack  
by using the Extron MBB 100 back of the rack mounting kit  
(Extron part #70-367-01). The back of the rack mounting kit  
allows the MIX 301 to be vertically positioned.  
1.  
Attach the two back of the rack mounting brackets to the  
sides of the MIX using the four included mounting screws.  
IP  
A
T
IP  
A
IP  
A
T
IP  
A
2.  
Mount the unit on the rack using the two included rack  
screws. The MIX 301 can be vertically mounted facing in  
either direction, as shown in the following diagram.  
4
MIX 301 • Installation and Operation  
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0
.2  
1
2
A
P
V
O
M
W
C
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A
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E
R
B
A
B
A
A
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BU  
V
E
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D
/
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IO  
R
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A
C
102  
A
R
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S
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2
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R
E
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B
A
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T
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B
A
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IR  
1
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3
+
IN  
P
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R
T
S
+
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L
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8
1
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S
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P
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M
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IX  
I/O  
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E
W
S
IT  
V
ID  
H
R
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U
+
D
d
d
B
-
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A
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D
IO  
S
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T
U
P
Furniture/Projector mounting  
Use the optional MBU 123 mounting kit (furniture,  
part #70-212-01, or the PMK 100 projector pole mount kit, part  
#70-217-01) to mount the MIX 301, as follows.  
Furniture mounting  
1.  
2.  
Remove the rubber feet if they were previously installed.  
Attach the mounting  
bracket to the MIX 301,  
as shown here.  
a.  
Remove the two  
machine screws  
from one side of  
the unit. Save  
these screws for  
future use.  
b.  
c.  
After lining up a  
bracket with the  
holes, attach the  
bracket using the  
L
R
longer machine screws provided.  
Repeat this step to attach the other bracket.  
3.  
Attach the MIX 301 to the furniture.  
5
MIX 301 • Installation and Operation  
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Installation and Operation, cont’d  
a.  
b.  
c.  
Hold the unit against the underside of the table or  
other furniture, and mark the locations for four screws  
(two screws per bracket) on the mounting surface.  
At each mark, drill a 3/32" (2 mm) diameter pilot hole  
approximately 1/4" (6 mm) deep in the mounting  
surface.  
Insert #8 wood screws into the four pilot holes.  
Tighten each screw into the mounting surface until just  
less than 1/4" (6 mm) of the screw protrudes.  
d.  
e.  
Align the bracket slots with the wood screws and place  
the unit against the mounting surface.  
Slide the unit either forward or backward until the  
screws are in contact with the edge of the bracket slots.  
Then, tighten each screw to secure the unit in place.  
Projector mounting  
1.  
2.  
Remove the rubber feet if they were previously installed.  
Attach the mounting bracket to the MIX 301 with the  
machine screws provided.  
Projector  
Mounting  
Bracket  
3.  
Secure the unit to a  
projector mount or other  
surface using mounting  
bolts as shown in the  
Mounting  
Bolt  
following diagram.  
L
BA  
S
L
A
E
R
2
UNB  
P
ON  
S
1
A
R
S
R
A/LUNB  
B
L
L
ALOPUT  
AL  
 0
TER  
DOI  
U
A
L
AL/UNB  
A
B
B
C
WER  
MXA  
PO  
1V2  
02.A  
Digital Projector  
MIX 301 • Installation and Operation  
6
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Rear Panel Features and Cabling  
3
5
IN 1  
IN 3  
MIX 301  
3 CHANNEL  
MIXER  
IN 2 MIX OUT  
1
12V  
0.5a MAX  
4
6
2
Figure 3 — MIX 301 rear panel  
Captive screw power input connector — Connect the included  
12 VDC external power supply into the 2-pole 3.5 mm captive  
screw connector. Be careful to observe the correct polarity.  
1
Smooth  
Ridges  
3
5
A
A
Tie Wrap  
SECTION A–A  
Captive Screw  
Connector  
Power Supply  
Output Cord  
When connecting the power supply, voltage  
polarity is extremely important. Applying power  
with incorrect voltage polarity could damage the  
power supply and the MIX 301. Identify the power  
cord negative (ground) lead by the ridges on the  
side of the cord or a black heat shrink wrapping  
around it.  
CAUTION  
The two power cord wires must be kept separate  
while the power supply is plugged in. Remove  
power before wiring.  
To verify the polarity before connection, check the no load  
power supply output with a voltmeter.  
Your MIX 301 may have shipped with a blue captive  
screw connector. This blue connector can be plugged  
into either a blue or an orange power receptacle.  
The ideal length of exposed (stripped) copper wire  
for the blue connector is 3/16" (5 mm).  
MIX 301 • Installation and Operation  
7
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Installation and Operation, cont’d  
The blue connector does not have the extended tail or the  
included tie-wrap.  
Do not tin the power supply leads before installing in the  
direct insertion connector. Tinned wires are not as  
secure in the connectors and could be pulled out.  
After making any adjustments to the MIX 301, either  
via the front panel controls, SIS commands, or the  
Extron Audio Products Control Program, wait at least  
10 seconds after making those changes before  
disconnecting power to the MIX 301. Failure to  
observe the 10-second timeout may result in those  
adjustments not being saved.  
Power LED — Lights green to indicate that the MIX 301 has  
2
power.  
Balanced/unbalanced input connectors (IN 1, IN 2, IN 3) —  
3
4
5
The balanced/unbalanced mono audio input is wired to a  
3-pole, 3.5 mm captive screw connector. Wire the connector as  
shown below.  
Do not tin the connector leads before installing them in  
the connector. Tinned wires are not as secure in the  
connectors and could be pulled out. For further wiring  
details, see the included “Cable Preparation For  
Audio Connections” card.  
Tip  
Sleeve  
Tip  
Ring  
Sleeve  
Left or Right  
Unbalanced Input  
Balanced Input  
Balanced output connector (MIX OUT) — The balanced mono  
output is wired to a 3-pole, 3.5 mm captive screw connector.  
Wire the connector as shown below for balanced or unbalanced  
output devices.  
6
MIX 301 • Installation and Operation  
8
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Do not tin the connector leads before installing them in  
the connector. Tinned wires are not as secure in the  
connectors and could be pulled out. For further wiring  
details, see the included “Cable Preparation For Audio  
Connections” card.  
CAUTION  
For unbalanced audio, connect the sleeve(s)  
to the ground. DO NOT connect the sleeve to  
the negative (-) contact.  
Tip  
Tip  
Ring  
Sleeve  
NO GROUND HERE  
Sleeve  
Unbalanced Output  
Balanced Output  
MIX 301 • Installation and Operation  
9
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Installation and Operation, cont’d  
Front Panel Features  
1
2
3
MTP SERIES  
1
2  
3
4
Figure 4 — MIX 301 front panel  
Power LED — Lights green to indicate that the MIX 301  
has power.  
1
4
Input channel audio gain controls — Adjusts the audio  
2
3
input gain for each input. The gain is adjusted by rotating  
the screw and the adjustment range is from mute (fully  
counterclockwise) to +20 dB (fully clockwise). See the note  
below.  
Unity gain (0 dB) for each input channel is around the  
12 o’clock (vertical) position with the potentiometer  
adjustment screws vertically aligned with the indicator  
dots, as shown here:  
1
2
3
The potentiometers of the MIX 301 are set precisely to  
unity gain at the factory. Once an adjustment screw is  
turned, test equipment will be required to accurately  
reset the potentiometer to unity gain.  
MIX 301 • Installation and Operation  
10  
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Reference Information  
Specifications  
Audio  
Gain ................................................ Adjustable per input. When all three gain  
potentiometers are set to 12 o’clock, the  
gain is as follows:  
Unbalanced output: -6 dB  
Balanced output: 0 dB  
Frequency response .................... 20 Hz to 20 kHz, 0.05 dB  
THD + Noise ................................. 0.05% @ 1 kHz at nominal level  
S/N ................................................ >90 dB, balanced, at maximum output  
(unweighted)  
CMRR ............................................ >70 dB @ 60 Hz to 20 kHz  
Audio input  
Number/signal type ................... 3 mono, balanced/unbalanced  
Connectors ................................... (3) 3.5 mm captive screw connectors,  
3 pole  
Impedance .................................... >18k ohms unbalanced/balanced,  
DC coupled  
Nominal level ............................... -10 dBV (316 mVrms) or +4 dBu  
(1.23 Vrms)  
Maximum level ............................ >+18 dBV, (balanced or unbalanced) at 1%  
THD+N  
Input gain adjustment ................. Mute to +20 dB, adjustable per input  
0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV 2 dBu  
Audio output  
Number/signal type ................... 1 mono, balanced/unbalanced  
Connectors ................................... (1) 3.5 mm captive screw connector, 3 pole  
Impedance .................................... 50 ohms unbalanced, 100 ohms balanced  
Nominal level ............................... -10 dBV (316 mVrms) unbalanced, or  
+4 dBu (1.23 Vrms) balanced, adjustable  
Maximum level ............................ +25 dBu, balanced with 100k ohm load at  
1% THD+N  
+18 dBm balanced with 600 ohm load at  
1% THD+N  
General  
External power supply ................ 100 VAC to 240 VAC, 50/60 Hz, external,  
autoswitchable; to 12 VDC, 1 A, regulated  
Power input requirements ......... 12 VDC, 0.2 A (max.)  
MIX 301 • Reference Information  
11  
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Reference Information, cont’d  
Temperature/humidity .............. Storage: -40 to +158 °F (-40 to +70 °C) /  
10% to 90%, noncondensing  
Operating: +32 to +122 °F (0 to +50 °C) /  
10% to 90%, noncondensing  
Rack mount .................................. Yes, with optional 1U rack shelf, part  
#60-190-01 or 60-604-01; or VersaTools®  
rack shelf, part #60-190-20 or 60-604-20; or  
the Back of the Rack Mounting Kit  
#70-367-01.  
Also furniture mountable with Under-  
desk Mounting Kit, part #70-212-01, or  
attachable to a projector mount with  
optional mounting kit #70-217-01.  
Enclosure type .............................. Metal  
Enclosure dimensions ................. 1.7" H x 2.2" W x 3.0" D (1U high, one-  
eighth rack wide)  
4.3 cm H x 5.6 cm W x 7.6 cm D  
(Depth excludes connectors.)  
Product weight ............................. 0.2 lbs (0.1 kg)  
Shipping weight ........................... 2 lbs (2 kg)  
Vibration ....................................... ISTA 1A in carton (International Safe  
TransitAssociation)  
Listings .......................................... UL, CUL  
Compliances ................................. CE, FCC Class A, VCCI, AS/NZS, ICES  
MTBF ............................................. 30,000 hours  
Warranty ....................................... 3 years parts and labor  
All nominal levels are at 10%.  
Specificationsaresubjecttochangewithoutnotice.  
MIX 301 • Reference Information  
12  
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Parts List  
Included parts  
Included  
parts  
Part number  
to reorder  
MIX 301  
60-737-01  
70-055-01  
Power supply: universal 12 VDC, 1.0 A  
3.5 mm captive screw connectors, 3-pole (x4) 10-319-13  
3.5 mm captive screw connector, 2-pole  
Tweeker (small screwdriver)  
Rubber feet (unattached)  
User’s manual  
Optional Accessories  
Accessories  
Part numbers  
MBB 100 back of the rack mounting kit  
RSF 123 1U 19" VersaTools rack shelf kit  
RSB 123 Basic VersaTools rack shelf  
RSU 129 1U 19" rack shelf kit  
70-367-01  
60-190-20  
60-604-20  
60-190-01  
60-604-01  
70-212-01  
70-217-01  
RSB 129 1U basic rack shelf kit  
MBU 123 Under desk mounting kit  
PMK 100 Projector pole mounting kit  
13  
MIX 301 • Reference Information  
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