User's Manual
AMX-140FX/
AMX-140
14-CHANNEL MIXING CONSOLE/
with DIGITAL EFFECTS
R
Version 1.0 December 2003
English
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PREFACE
Dear Customer:
Thank you for choosing the LTO AMX-140 14-Channel Mixing Console (AMX-140FX 14-Channel Mixing Console
with Digital Effects), which is the result of our LTO AUDIO TEAM's endeavours.
For the LTO AUDIO TEAM, music and audio are more than a profession, it is a passion and an obsession!
We have, in fact, been designing professional audio products for a number of years in cooperation with many of the
world's major brands.
The LTO line represents unparalleled analogue and digital products made by musicians, for musicians. With our
design centres in Italy, the Netherlands, and the United Kingdom we provide you with world-class designs, while our
software development teams continue to develop an impressive range of audio specific algorithms.
By purchasing our LTO products you become the most important member of our LTO AUDIO TEAM. We would
like to share with you our passion for what we design and invite you to make suggestions, which will aid us in develop-
ing future products for you. We guarantee you our commitment for quality, continual research and development,
and of course the best prices.
The LTO AMX-140(FX) mixing console is equipped with 4 mono input channels (these are provided with ultra low noise
microphone pre-amplifiers and phantom power at +48 Volt), 4 stereo input channels, 4 stereo aux returns and 2 TK IN.
So, in total you have 14 input channels on your AMX-140(FX). It is specifically designed for professional application.
Seeing is believing, let's meet the LTO AMX-140(FX).
We would like to thank all the people who made the LTO AMX-140(FX) 14-Channel Mixing Console possible, esp-
ecially to our designers and LTO staff. It is their passion for music and professional audio that has made it possible
for us to offer you, our most important team member, our continued support.
Thank you very much
LTO AUDIO TEAM
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TABLE OF CONTENTS
1.INTRODUCTION...................................................................................................................................................4
2.FEATURES...........................................................................................................................................................5
3.READY TO START?...............................................................................................................................................6
4.CONTROL ELEMENTS.......................................................................................................................................7
4.1 MONO MIC/LINE Channels .........................................................................................................................9
4.2 INPUT LEVEL Setting ..................................................................................................................................9
4.3 MONO Channel INSERT ..............................................................................................................................9
4.4 LOW CUT Switch ........................................................................................................................................9
4.5 STEREO Inputs ..........................................................................................................................................10
4.6 3 BANDS EQUALIZER Controls ................................................................................................................10
4.7 AUX SENDS Controls ...............................................................................................................................10
4.8 PAN/BAL Control .......................................................................................................................................11
4.9 PEAK LED ..................................................................................................................................................11
4.10 LEVEL Control ...........................................................................................................................................11
4.11 MAIN MIX LEVEL Dial ...............................................................................................................................11
4.12 OUTPUT LEVEL LED Display ....................................................................................................................11
4.13 POWER LED .............................................................................................................................................11
4.14 PHANTOM LED .......................................................................................................................................11
4.15 TAPE Switches .........................................................................................................................................11
4.16 2TK IN Control ...........................................................................................................................................12
4.17 PHONES/CTRL ROOM Control ...............................................................................................................12
4.18 AUX RETURN Controls ............................................................................................................................12
4.19 AUX SENDS Connectors ........................................................................................................................12
4.20 STEREO AUX RETURNS Connectors .....................................................................................................12
4.21 PHONES ...................................................................................................................................................12
4.22 CTRL ROOM OUTPUT Connectors..........................................................................................................12
4.23 24 BIT DIGITAL EFFECTS (For AMX-140FX Model) ................................................................................13
4.24 2TK IN/OUT Connectors .............................................................................................................................13
4.25 MAIN MIX OUTPUT Connectors ...............................................................................................................14
4.26 REAR PANEL Description ........................................................................................................................14
5.INSTALLATION AND CONNECTION.....................................................................................................................15
6.FOR THE EXPERTS WHO WANT TO KNOW MORE..........................................................................................18
7.PRESET LIST.........................................................................................................................................................19
8.SYSTEM BLOCK DIAGRAMS.............................................................................................................................26
9.TECHNICAL SPECIFICATION..............................................................................................................................27
10.WARRANTY.........................................................................................................................................................29
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1. INTRODUCTION
Thank you very much for expressing your confidence in LTO products by purchasing LTO AMX-140(FX) mixing console.
The AMX-140(FX) is a professional compact mixer. You will get the smooth, accurate more natural and open sound from
this apparatus, and it is really ideal for small gigs, recording and fixed PA installations.
The AMX-140(FX) mixing console is packed with some key features that can not be found in other consoles of its size:
4
mono (these are provided with ultra low noise microphone pre-amplifiers and phantom power at +48 Volt) and 4
stereo input channels, and each of them is provided with a 3 bands graphic equalizer for HI, MID and LOW controls
;
highly accurate 12-segment bar graph meters and 2-Track inputs assignable to main mix, control room / headphone
outputs etc.. Besides, the 24 bit effects processor with 256 effects (16 presets 16 variations) is equipped specifically
for AMX-140FX.
Your AMX-140(FX) is very easy to operate but we advise you to go through each section of this manual carefully.
In this way you will get the best out of your AMX-140(FX).
4
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2. FEATURES
The AMX-140(FX) mixing console is designed for professional application. It will provide the following features:
The common features:
5 MIC input channels with gold plated XLRs and balanced LINE input
4 stereo input channels with balanced TRS jacks
Ultra-low noise discrete MIC pre-amps with +48V Phantom power
Extremely high headroom offering more dynamic range
Balanced inputs for highest signal integrity
Warm, natural 3-band EQ on each channel
Switch-able Low-cut filter on each mono channel
Peak LED on each channel
AUX send 1/2 per channel for external effects and monitoring
4 AUX returns for additional functionality
Control room and headphone outputs
2-Track inputs assignable to main mix, control room / headphone outputs
Highly accurate 12-segment bar graph meters
Inserts on MIC channels
Additionally, the AMX-140FX is also equipped with following features:
24 bit digital effects processor
256 effects (16 presets 16 variations)
Effect on/off by means of MUTE switch or a footswitch connected to the DFX FOOTSWITCH
5
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3. READY TO START?
3.1 Please check the AC voltage available in your country before connecting your AMX-140(FX) to the AC socket.
3.2 Be sure that the main power switch is turned off before connecting the mixer to the AC socket. Also, you should
make sure that all Input and output controls are turned down. This will avoid damages to your speakers and avoid
excessive noise.
3.3 Before turning on the AMX-140(FX) you shall connect it to a power amplifier and turn-on the mixer BEFORE the power
amplifier. Once you have finished your working session you shall turn the mixer off AFTER the power amplifier.
3.4 Before disconnecting the AMX-140(FX) always turn-off the power switch.
3.5 Do not use solvents to clean your AMX-140(FX). A dry and clean cloth will be OK.
6
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4. CONTROL ELEMENTS
AMX-140FX
2-TRACK IN/OUT
MAIN MIX OUTPUT
(BAL/UNBAL)
R
MIC 1
MIC 2
MIC 3
MIC 4
L
FX
-140
AM
J.T.
J.T.
J.T.
J.T.
2
1
2
1
2
1
2
1
R
3
3
3
3
14-CHANNEL MIXING CONSOLE
WITH DIGITAL EFFECTS
LEFT
RIGHT
TAPE IN
TAPE OUT
BAL OR
UNBAL
BAL OR
UNBAL
BAL OR
UNBAL
BAL OR
UNBAL
LINE IN
1
LINE IN
2
LINE IN
3
LINE IN
4
CTRL ROOM OUTPUT
R
LINE IN 5/6
LINE IN 7/8
PHONES
L
J.T.
2
1
INSERT
INSERT
INSERT
INSERT
STEREO AUX RETURNS
2
AUX SENDS
1
3
TRIM
TRIM
TRIM
TRIM
1
LEFT(MONO)
LEFT (MONO)
MIC (MONO)
DSP
FOOTSWITCH
LEFT(MONO)
LEFT(MONO)
TRIM
+15dB -30dB LINE
0dB 44dB MIC
+15dB -30dB LINE
0dB 44dB MIC
+15dB -30dB LINE
0dB 44dB MIC
+15dB -30dB LINE
0dB 44dB MIC
2
RIGHT
RIGHT
LOW CUT
LOW CUT
LOW CUT
LOW CUT
75Hz
75Hz
75Hz
75Hz
18dB/Oct
18dB/Oct
18dB/Oct
18dB/Oct
0dB
44dB MIC
RIGHT
RIGHT
0
0
0
EQ
EQ
EQ
EQ
EQ
EQ
HI
HI
HI
HI
HI
HI
12kHz
12kHz
12kHz
12kHz
12kHz
12kHz
1
16
10
2
15
14
13
12
11
3
7
-15
-12
-15
+15
+12
+15
-15
+15
+12
+15
-15
+15
+12
+15
-15
+15
+12
+15
-15
-12
-15
+15
+12
+15
-15
-12
-15
+15
-
+15
-
+15
-
+15
4
AUX2/DFX TO AUX 1
AUX RTN 1
AUX RTN 22 (DFX)
5
6
MID
2.5kHz
MID
2.5kHz
MID
2.5kHz
MID
2.5kHz
MID
2.5kHz
MID
2.5kl
8
9
-12
-15
-12
-15
-12
-15
+12
+15
PRESETS
2TK TO
CTRL ROOM
1
16
2
-
MAX
-
MAX
15
14
13
12
11
3
7
LOW
80Hz
LOW
80Hz
LOW
80Hz
LOW
80Hz
LOW
80Hz
LOW
80Hz
CTRL ROOM
PHONES
/
2TK IN
4
2TK TO MIX
5
TAPE
6
OUTPUT LEVEL
10
8
1
AUX
AUX
1
AUX
1
AUX
1
AUX
1
AUX
1
9
VARIATIONS
PRE
PRE
PRE
PRE
PRE
PRE
-2
0
-4
2
L
-7
4
-10
7
-20
10
CLIP
PEAK
-30
-
-
+15
+15
-
-
+15
+15
-
-
+15
+15
-
-
+15
+15
-
-
+15
+15
-
-
+15
+15
2
/
D
F
X
2
/
D
F
X
2
/
D
F
X
2
/
D
F
X
2
/
D
F
X
2
/
D
F
X
R
PWR
PH
POST
(PRE)
POST
(PRE)
POST
(PRE)
POST
(PRE)
POST
(PRE)
POST
(PRE)
DFX MUTE
1. VOCAL 1
2. VOCAL 2
3. LARGE HALL
4. SMALL HALL
PAN
PAN
PAN
PAN
BAL
BAL
5. LARGE ROOM
6. SMALL ROOM
7. PLATE
8. TAPE REVERB
9. SPRING REVERB
10. MONO DELAY
11. STEREO DELAY
12. FLANGER
LEFT
RIGHT
LEFT
RIGHT
LEFT
RIGHT
LEFT
RIGHT
LEFT
RIGHT
LEFT
RIGHT
13. CHORUS
14. REV. + DELAY
15. REV. + FLANGER
16. REV. + CHORUS
PEAK
PEAK
PEAK
PEAK
PEAK
PEAK
-
+15
-
+15
-
+15
-
+15
-
+15
-
+15
-
+15
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
5/6
LEVEL
7/8
MAIN MIX LEVEL
1
2
3
4
7
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AMX-140
2-TRACK IN/OUT
MAIN MIX OUTPUT
(BAL/UNBAL)
R
MIC 1
MIC 2
MIC 3
MIC 4
L
-140
AM
J.T.
J.T.
J.T.
J.T.
2
1
2
1
2
1
2
1
R
3
3
3
3
14-CHANNEL MIXING CONSOLE
LEFT
RIGHT
TAPE IN
TAPE OUT
BAL OR
UNBAL
BAL OR
UNBAL
BAL OR
UNBAL
BAL OR
UNBAL
LINE IN
1
LINE IN
2
LINE IN
3
LINE IN
4
CTRL ROOM OUTPUT
R
LINE IN 5/6
LINE IN 7/8
PHONES
L
J.T.
2
1
INSERT
INSERT
INSERT
INSERT
STEREO AUX RETURNS
2
AUX SENDS
1
3
TRIM
TRIM
TRIM
TRIM
1
LEFT(MONO)
LEFT (MONO)
MIC (MONO)
LEFT(MONO)
LEFT(MONO)
TRIM
+15dB -30dB LINE
0dB 44dB MIC
+15dB -30dB LINE
0dB 44dB MIC
+15dB -30dB LINE
0dB 44dB MIC
+15dB -30dB LINE
0dB 44dB MIC
2
RIGHT
RIGHT
LOW CUT
LOW CUT
LOW CUT
LOW CUT
75Hz
75Hz
75Hz
75Hz
18dB/Oct
18dB/Oct
18dB/Oct
18dB/Oct
0dB
44dB MIC
RIGHT
RIGHT
0
0
0
EQ
EQ
EQ
EQ
EQ
EQ
HI
HI
HI
HI
HI
HI
12kHz
12kHz
12kHz
12kHz
12kHz
12kHz
-
AUX2 TO AUX 1
+15
-
AUX RTN 1
+15
-
+15
AUX RTN 2
-15
-12
-15
+15
+12
+15
-15
+15
+12
+15
-15
+15
+12
+15
-15
+15
+12
+15
-15
-12
-15
+15
+12
+15
-15
-12
-15
+15
MID
2.5kHz
MID
2.5kHz
MID
2.5kHz
MID
2.5kHz
MID
2.5kHz
MID
2.5kl
-12
-15
-12
-15
-12
-15
+12
+15
2TK TO MIX
2TK TO
-
MAX
CTRL ROOM
CTRL ROOM
PHONES
/
LOW
80Hz
LOW
80Hz
LOW
80Hz
LOW
80Hz
LOW
80Hz
LOW
80Hz
OUTPUT LEVEL
1
2
AUX
AUX
1
2
AUX
1
2
AUX
1
AUX
1
2
AUX
1
2
-2
0
PRE
PRE
PRE
PRE
PRE
PRE
-4
2
L
-7
4
-10
7
-20
10
CLIP
-30
-
-
+15
+15
-
-
+15
+15
-
-
+15
+15
-
-
+15
+15
-
-
+15
+15
-
-
+15
+15
R
2
PWR
PH
POST
(PRE)
POST
(PRE)
POST
(PRE)
POST
(PRE)
POST
(PRE)
POST
(PRE)
PAN
PAN
PAN
PAN
BAL
BAL
LEFT
RIGHT
LEFT
RIGHT
LEFT
RIGHT
LEFT
RIGHT
LEFT
RIGHT
LEFT
RIGHT
PEAK
PEAK
PEAK
PEAK
PEAK
PEAK
-
+15
-
+15
-
+15
-
+15
-
+15
-
+15
-
+15
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
5/6
LEVEL
7/8
MAIN MIX LEVEL
1
2
3
4
8
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4.1 MONO MIC/LINE Channels
1
MIC 1
These are channel 1 through channel 4. You can connect balanced, low impe-
dance microphones to the XLR socket. On the 1/4" phone jack you can connect
either a microphone or a line level instrument. You shall never connect an un-
balanced microphone to the XLR socket if you do not want to damage both the
microphone and the mixer.
J.T.
2
1
3
1
48 Volt phantom power
2
BAL OR
UNBAL
It is available only to the XLR Mic sockets. Never plug in a microphone when
phantom power is already on. Before turning phantom power on, make sure
that all faders are all the way down. In this way you will protect your stage
monitors and main loudspeakers.
LINE IN 1
4
3
INSERT
TRIM
3
4.2 INPUT LEVEL Setting
This control is provided with 2 different indication rings: One is
for the microphone and the other for the line levels. When you
use a microphone you shall read the OUTSIDE ring (0~44 dB),
when you use a line level instrument you shall read the INSIDE
ring (+15~-30 dB). For optimum operation you shall set this control
in a way that the peak LED will blink also occasionally in order to
avoid distortion on the input channel.
+15dB -30dB LINE
0dB 44dB MIC
LOW CUT
75Hz
18dB/Oct
5
4.3 MONO Channel INSERT
4
Insert points are provided for each mono MIC channel, which can
allow you patch external signal processing devices into signal
path. When you insert a TRS jack in the insert socket, the signal
will be taken out after the input gain control (Trim), sent to an ex-
ternal processor such as a compressor-limiter, and returned into
the channel strip immediately before the EQ section. Of course,
the jacks used must be stereo (Tip Send/Ring Return).
ON
OFF
PHANTOM
POWER
2
4.4 LOW CUT Switch
5
By pressing this button you will activate a 75 Hz low frequency filter with a slope of 18 dB per octave. You can use
this facility to reduce the hum noise infected by the mains power supply, or the stage rumble while using a microphone.
9
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6
4.5 STEREO Inputs
LINE IN 5/6
LINE IN 7/8
These are Channel 5 through 8. They are organised
in stereo pair and provided with 1/4" TRS sockets.
J.T.
2
1
3
If you connect only the left jack, the input will operate
in mono mode.
LEFT(MONO)
LEFT (MONO)
6
MIC (MONO)
TRIM
RIGHT
RIGHT
0dB
44dB MIC
4.6 3 BANDS EQUALIZER Controls
A 3-band equalizer is provided for all input channels with a wide
range of frequency adjustment.
EQ
4.6.1 HI
7
HI
12kHz
7
This is the Treble control. You can use it to get rid of high frequency
noises or to boost the sound of cymbals or the high harmonics of
the human voice. The gain range goes from -15dB to +15dB with
a center frequency of 12 kHz.
-15
-12
+15
+12
+15
MID
2.5kHz
8
9
4.6.2 MID
8
LOW
80Hz
This is the Midrange control. It can affect most fundamental fre-
quencies of all musical instruments and human voice. An attentive
use of this control will give you any very wide panorama of sound
effects. The gain range goes from -12dB to +12dB and the center
frequency is 2.5 kHz.
-15
1
AUX
PRE
-
+15
+15
10
11
2
/
D
F
X
POST
(PRE)
4.6.3 LOW
9
-
This is the Bass control. Boost male voice or kickdrum and bass
guitar. Your system will sound much bigger than what it is. The gain
range goes from -15dB to +15dB and the center frequency is 80 Hz.
PAN
LEFT
RIGHT
12
13
PEAK
4.7 AUX SEND Controls
10
These two controls are used to adjust the level of the signal sent to
AUX buses, and their adjustable range goes from - to +15dB.
-
+15
LEVEL
AUX1 is configured as PRE-FADER, so, generally, it can be used
for monitor application. While AUX2 is configured as POST-FADER,
therefore, most of the times, it will be used for effects and processors
input, however, you can also changed it to PRE-FADER configuration
according to the specific application. (For more detail, please see
chapter 6.)
1
10
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In the AMX-140FX model, excluding sending out directly to the external effect or processor equipment, the AUX SEND2
will also be sent to the internal onboard effect module.
4.8 PAN/BAL Control
11
Abbreviation of PANORAMA control for mono channels, for the stereo channels, always says, BALANCE control.
You can adjust the stereo image of the signal via this control. Keep this control in center position and your signal
will be positioned in the middle of stage. Turn this control fully counterclockwise and the signal will be present only
on the left speaker and vice-versa.
4.9 PEAK LED
12
Inside your AMX-140(FX) the audio signal is monitored in several different stages and then sent to the PEAK LED.
When this LED blinks, it warns you that you are reaching signal saturation and possible distortion. The PEAK LED will
blink with a level that is 6dB before actual clipping.
4.10 LEVEL Control
13
This control will adjust the overall level of this channel and set the amount of signal sent to the main output.
4.11 MAIN MIX LEVEL Dial
14
21
20
This control sets the amount of signal sent either
to the main out socket or to the tape output.
18
19
2TK TO
CTRL ROOM
4.12 OUTPUT LEVEL LED Display
15
-
MAX
-
MAX
2TK IN
This stereo 12 segments LED meter will indicate
the level of the overall output signal.
CTRL ROOM
PHONES
/
2TK TO MIX
TAPE
OUTPUT LEVEL
4.13 POWER LED
16
-2
0
-4
2
L
-7
4
-10
7
-20
10
-30
CLIP
This LED indicates when the power is on in your
AMX-140(FX).
15
17
R
PWR
PH
16
4.14 PHANTOM LED
17
This LED indicates when the phantom power is
switched on.
4.15 TAPE Switches
- 2TK TO CTRL ROOM
18
Engaging this button to route the 2 TRACK IN signal
into the control room output.
-
+15
MAIN MIX LEVEL
- 2TK TO MIX
19
Engaging this button to route the 2 TRACK IN signal
into the main output.
14
11
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4.16 2TK IN Control
20
This control is used to adjust the level of 2TK IN signal, which can be varied from - to MAX.
4.17 PHONES/CTRL ROOM Control
21
This control sets the amount of signal sent to the control room and headphone.
4.18 AUX RETURN Controls
22
As implied in the name, the auxiliary returns are used to 'return' the
signal from the external effects or processors to the main mix, but,
most of the times, it can also be worked as the additional stereo line
inputs.
0
0
0
In this typical compact unit:
-
+15
AUX2/DFX TO AUX 1
- +15
AUX RTN 1
-
AUX RTN 22 (DFX)
+15
AUX RETURN1 is configured to be assigned to the main mix bus
permanently, for mono application, only use the left input jack.
But for AUX RETURN2, excluding assigning the returned signal to
main mix bus, it can also to AUX1 bus, and in this case, adjust AUX2/
23
22
DFX TO AUX1 knob
to control the input level.
23
In AMX-140FX model, AUX RETURN2 (DFX) is connected rightly
with the output of the internal digital effects, but, this signal flow will
be broken, if you have any external signal inserted from these two
jacks.
4.19 AUX SENDS Connectors
24
27
26
These 1/4" sockets are used to send out the signal from the AUX
bus to external devices such effects.
CTRL ROOM OUTPUT
R
PHONES
L
4.20 STEREO AUX RETURNS Connectors
25
STEREO AUX RETURNS
2
AUX SENDS
1
Use these stereo 1/4" sockets to return the sound of an effect
unit to the main mix. You can also use them as the extra auxiliary
inputs.
1
LEFT(MONO)
LEFT(MONO)
2
4.21 PHONES
26
This socket will send out the mix signal to a pair of headphones.
RIGHT
RIGHT
25
24
4.22 CTRL ROOM OUTPUT Connectors
27
These 1/4" sockets are used to send the control room signal to
the studio monitor speakers or a second set of PA.
12
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4.23 24 BIT DIGITAL EFFECTS (For AMX-140FX Model)
- PRESETS Control
28
Adjust this knob to select the right effect you wish to perform.
There are total 16 options for you: several kinds of reverb, mono
and stereo delay, effects with modulation, and versatile two-effect
combination.
DSP
FOOTSWITCH
29
- VARIATIONS Control
32
Since you have selected the preferable effect, the next step, please
go with the fine consideration, there are also total 16 variations for
each preset. Each variation may be managed by several different
factors.
1
16
10
2
3
7
15
14
13
12
11
4
5
6
30
- MUTE Switch
28
29
8
9
This switch is used to activate/deactivate the effect facility.
Sometimes, you can also use the DFX FOOTSWITCH for con-
venient operation.
PRESETS
1
16
2
3
7
15
14
13
12
11
4
5
6
10
8
9
VARIATIONS
31
- PEAK LED
31
30
PEAK
This LED lights up when the input signal is too strong.
In case of the digital effect module being muted, this LED also
lights up.
DFX MUTE
1. VOCAL 1
2. VOCAL 2
3. LARGE HALL
4. SMALL HALL
5. LARGE ROOM
6. SMALL ROOM
7. PLATE
32
- DFX FOOTSWITCH
8. TAPE REVERB
9. SPRING REVERB
10. MONO DELAY
11. STEREO DELAY
12. FLANGER
This 1/4" phone jack can be used to connect an external foot-
switch to turn on/off the onboard effect module.
13. CHORUS
14. REV. + DELAY
15. REV. + FLANGER
16. REV. + CHORUS
4.24 2TK IN/OUT Connectors
- TAPE IN
33
Use the tape input if you wish to listen to your mix from a taper
recorder or DAT. You can assign the signal coming from the taper
recorder either to a pair of studio monitor using the control room
assignment on the front panel or you can also send the signal
directly to the main mix.
2-TRACK IN/OUT
L
R
33
- TAPE OUT
TAPE IN
TAPE OUT
These RCA jacks will route the main mix into a tape recorder.
13
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4.25 MAIN MIX OUTPUT Connectors
34
MAIN MIX OUTPUT
(BAL/UNBAL)
The stereo output is supplied both with XLR and 1/4" TRS sockets,
which is used to send the audio signal to an amplifier.
Through the main mix level control, you can adjust the output level
from - to +15dB.
LEFT
RIGHT
34
4.26 REAR PANEL Description
ON
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
MODEL
SERIAL
WARNING: SHOCK HAZARD DO NOT OPEN
-
AVIS: RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR
-
18VAC~
OFF
POWER PHANTOM
RATED POWER CONSUMPTION: 25W
35
2
36
- POWER ON/OFF Switch
35
This switch is used to turn the main power ON and OFF.
- PHANTOM ON/OFF Switch
2
This switch will apply +48 Volt Phantom Power only to the 5 XLR microphone inputs. Never connect microphones
when the phantom power is on already.
- AC INPUT Connector
36
This connector is used to connect the supplied AC Adapter.
14
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5. INSTALLATION AND CONNECTION
Ok, you have got to this point you are now in the position to successfully operate your AMX-140(FX). However, we
advise you to read carefully the following section to be the real master of your own mix. Not paying attention enough
to the Input signal level, to the routing of the signal and the assignment of the signal will result in unwanted distortion,
a corrupted signal or no sound at all. So you should follow this procedure for every single channel:
Turn down all Input and output gain controls.
Connect phantom powered microphones before switching on the +48Volt phantom power switch.
If you have a power amplifier connected to your AMX-140(FX) set the level of the amplifier at no more than 75%.
Now, set the CONTROL ROOM/PHONES level at no more than 50%. In this way you will be able to hear later what
you are doing connecting a pair of headphones or a pair of powered studio monitor speakers.
Position HI, MID and LOW EQ controls on the middle.
Position panoramic (PAN) control on the center.
With a headphone or studio monitor speakers connected apply a Line Level input signal so that the PEAK LED does
not light up.
At this point increase the input gain so that the PEAK LED will blink occasionally. In this way you will maintain good
headroom and ideal dynamic range.
Now connect a microphone and ask the singer to sing loud into the microphone. Turn slowly the Gain Control clockwise
and have the PEAK LED blink only occasionally.
Now repeat the same sequence for all input channels. The main LED Meter could move up into the red section. In
this case you can adjust the overall output level through the MAIN MIX control.
15
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5.1 SOME FINAL TIPS ON WIRING CONFIGURATION
You can connect unbalanced equipment to balanced inputs and outputs. Simply follow these schematics.
Ring=Right Signal
Tip
Sleeve
Ring
Strain Clamp
Tip=Left Signal
Sleeve=Ground/Screen
Use for Headphone, Stereo Return
1/4" Stereo (TRS) Jack Plug
Tip
Sleeve
Tip=Signal
Strain Clamp
Sleeve=Ground/Screen
Use for Mono Line In, Mono 1/4"Jack Plugs
1/4" Mono (TS) Jack Plug
Ring=Return Signal
Tip
Sleeve
Ring
Strain Clamp
Tip=Send Signal
Sleeve=Ground/Screen
Use for Pre-Gain Channel Inserts
1/4" Stereo (TRS) Jack Plug
2
2
1
1
2=Hot(+)
2=Hot(+)
1=Ground/Screen
1=Ground/Screen
3
3
3=Cold(-)
Use for Balanced Mic Inputs
(For unbalanced use, connect pin 1 to 3)
3=Cold(-)
Use for Main output
(For unbalanced use, leave pin 3 unconnected)
3-pin XLR Male Plug
(seen from soldering side)
3-pin XLR Line Socket
(seen from soldering side)
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Ring=Return Signal (Connected together)
To Channel Insert
Sleeve=Ground/Screen
Tip=Signal
To Tape or FX Input
Sleeve=Ground/Screen
'Tapped' Connection Direct Output Lead
(Enables the Insert to be used as a Direct Output
while maintaining the channel signal flow)
To Processor Input
Sleeve=Ground/Screen
Tip
Tip=Send Signal
To Channel Insert
Ring=Return Signal
Ring
Sleeve
To Processor Output
-Stereo lead for insert Connection
(To be used when the processor does not employ a
single jack connection for the In/Out Connections)
17
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6. FOR THE EXPERTS WHO WANT TO KNOW MORE
As we have told you previously in this manual, the AUX SEND2 control both on mono and on stereo channels is factory
wired as POST-FADER. If you have some skill in electronic components soldering you can modify this setting and have
all your AUX SENDS configured as PRE-FADER.
AUX
AUX
(PRE)
POST
(PRE)
POST
Solder the PRE route
Disconnect
the POST route
Before
After
Modification on mono and stereo channels
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7. PRESET LIST (For AMX-140FX Model)
01. VOCAL1
Pre-delay
84
Rev. Type
Hi Damp
-12
-12
-12
-12
-12
-12
-12
-12
-12
-12
-12
-12
-12
-12
-12
-12
No
1
Rev Time
1.00
1.00
4.50
3.60
1.20
3.60
0.8
Room Size
39
8
Hall
Tape
2
30
Spring
3
0
10
11
9
4
55
Plate
Spring
5
10
6
79
8
Hall
Plate
Plate
Spring
Tape
7
45
41
41
9
8
45
1.50
2.40
0.90
1.50
1.00
1.00
2.10
4.50
1.70
9
25
10
11
12
13
14
15
16
0
41
10
45
9
45
Plate
Hall
114
40
Spring
Tape
50
10
11
45
Plate
Plate
55
02. VOCAL2
Pre-delay
114
45
Rev. Type
Spring
Hi Damp
-12
-12
-12
-12
-12
-12
-12
-12
-12
-12
-12
-12
-12
-12
-12
-12
No
1
Rev Time
1.00
0.80
3.60
1.20
3.60
4.50
1.00
1.00
1.70
4.50
2.10
1.00
1.00
1.50
0.90
2.40
Room Size
10
41
8
2
Plate
Hall
3
79
Spring
4
10
9
5
55
11
10
8
Plate
Spring
Tape
6
0
7
30
8
84
39
11
41
9
Hall
Plate
Plate
Tape
Spring
9
55
10
11
12
13
14
15
16
45
50
40
45
10
41
41
9
114
45
Hall
Plate
Tape
0
Spring
25
03. LARGE HALL
Pre-delay
Hi Damp
-0.96
No
1
Rev Time
5.40
Room Size
Rev level
55
55
40
40
50
50
27
27
45
45
35
35
43
43
33
33
79
79
78
78
82
82
82
82
2
5.40
-12.00
-0.96
3
5.40
4
5.40
-12.00
-0.96
5
4.50
6
4.50
-12.00
-0.96
7
4.50
8
4.50
-12.00
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9
50
50
27
27
45
45
23
23
4.00
4.00
4.00
4.00
3.60
3.60
3.60
3.60
42
42
32
32
41
41
30
30
-0.96
-12.00
-0.96
82
82
82
82
88
88
88
88
10
11
12
13
14
15
16
-12.00
-0.96
-12.00
-0.96
-12.00
04. SMALL HALL
Pre-delay
45
Hi Damp
-0.96
No
1
Rev Time
2.90
2.90
2.90
2.90
2.10
2.10
2.10
2.10
1.50
1.50
1.50
1.50
1.00
1.00
1.00
1.00
Room Size
Rev level
92
39
39
28
28
38
38
27
27
37
37
26
26
36
36
25
25
2
45
-12.00
-0.96
92
3
23
92
4
23
-12.00
-0.96
92
5
40
100
100
100
100
100
100
100
100
100
100
100
100
6
40
-12.00
-0.96
7
20
8
20
-12.00
-0.96
9
40
10
11
12
13
14
15
16
40
-12.00
-0.96
20
20
-12.00
-0.96
40
40
-12.00
-0.96
20
20
-12.00
05. LARGE ROOM
Pre-delay
55
Hi Damp
-0.96
No
1
Rev Time
4.50
4.50
4.50
4.50
4.00
4.00
4.00
4.00
3.60
3.60
3.60
3.60
2.90
2.90
2.90
2.90
Room Size
Rev level
82
20
20
11
11
19
19
11
11
18
18
10
10
18
18
10
10
2
55
-12.00
-0.96
82
3
40
82
4
40
-12.00
-0.96
82
5
50
82
6
50
-12.00
-0.96
82
7
27
82
8
27
-12.00
-0.96
82
9
50
88
10
11
12
13
14
15
16
50
-12.00
-0.96
88
27
88
27
-12.00
-0.96
88
45
88
45
-12.00
-0.96
88
23
88
23
-12.00
88
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06. SMALL ROOM
Pre-delay
45
Hi Damp
-0.96
No
1
Rev Time
2.10
2.10
2.10
2.10
1.50
1.50
1.50
1.50
1.00
1.00
1.00
1.00
0.70
0.70
0.70
0.70
Room Size
Rev level
92
17
17
9
2
45
-12.00
-0.96
92
3
23
92
4
23
9
-12.00
-0.96
92
5
40
17
17
9
100
100
100
100
100
100
100
100
100
100
100
100
6
40
-12.00
-0.96
7
20
8
20
9
-12.00
-0.96
9
40
16
16
8
10
11
12
13
14
15
16
40
-12.00
-0.96
20
20
8
-12.00
-0.96
40
16
16
8
40
-12.00
-0.96
20
20
8
-12.00
07. PLATE
Pre-delay
10
Hi Damp
-2.08
-2.08
-2.08
-2.08
-2.08
-2.08
-2.08
-2.08
-2.08
-2.08
-2.08
-2.08
-2.08
-2.08
-2.08
-2.08
No
1
Rev Time
6.10
5.40
4.50
4.00
3.60
2.90
2.40
2.10
1.70
1.50
1.30
1.20
1.00
0.80
0.70
0.60
Room Size
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
2
10
3
10
4
10
5
10
6
10
7
10
8
10
9
10
10
11
12
13
14
15
16
10
10
10
10
10
10
10
08. TAPE REVERB
Pre-delay
Hi Damp
-0.96
No
1
Rev Time
5.4
Room Size
Rev level
84
84
84
84
84
84
84
84
38
38
35
35
31
31
28
28
79
79
79
79
84
84
84
84
2
5.4
-12.00
-0.96
3
4.50
4.50
4
4
-12.00
-0.96
5
6
4
-12.00
-0.96
7
3.60
3.60
8
-12.00
21
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9
0
0
0
0
0
0
0
0
3.60
3.60
2.90
2.90
2.10
2.10
1.30
1.30
23
23
23
23
21
21
21
21
-0.96
-12.00
-0.96
92
92
10
11
12
13
14
15
16
92
-12.00
-0.96
92
100
100
100
100
-12.00
-0.96
-12.00
09. SPRING REVERB
Pre-delay
Hi Damp
-0.96
No
1
Rev Time
5.4
Room Size
Rev level
79
35
35
30
30
30
30
30
84
0
35
35
33
33
30
30
28
28
22
22
22
22
22
22
22
22
2
5.4
-12.00
-0.96
79
3
4.50
4.50
4
79
4
-12.00
-0.96
79
5
87
6
4
-12.00
-0.96
87
7
3.60
3.60
2.90
2.90
2.40
2.40
1.70
1.70
1.30
1.30
87
8
-12.00
-0.96
87
9
92
10
11
12
13
14
15
16
0
-12.00
-0.96
92
0
100
100
100
100
100
100
0
-12.00
-0.96
0
0
-12.00
-0.96
0
0
-12.00
10. MONO DELAY
Delay
650
625
600
577
555
535
517
500
484
461
448
434
350
250
100
60
F.B.
60
60
60
60
60
60
60
60
60
60
60
60
60
65
0
No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
0
22
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11. STEREO DELAY
Delay
400
375
352
326
312
300
288
277
267
258
250
241
238
230
222
214
No
1
Right Delay
200
Left F.B.
51
Right F.B.
72
187
51
72
2
176
40
72
3
163
40
72
4
156
40
72
5
150
40
72
6
144
40
66
7
138
40
66
8
133
30
66
9
129
38
73
10
11
12
13
14
15
16
125
37
73
120
36
73
119
36
73
115
37
74
111
38
73
107
37
73
12. FLANGER
Mod. Freq
2.79
2.52
2.33
2.25
2.10
1.99
1.75
1.61
1.34
1.22
1.00
0.80
0.65
0.54
0.42
0.16
No
1
Pitch. Depth
Left F.B.
38
Right F.B.
42
30
40
40
40
40
40
40
50
50
70
70
70
70
70
70
70
42
38
2
38
42
3
38
42
4
42
38
5
38
42
6
42
38
7
38
42
8
42
38
9
58
62
10
11
12
13
14
15
16
62
58
62
58
58
62
68
72
68
72
68
72
13. CHORUS
Mod. Freq.
5.00
No
1
Pitch. Depth
IHFR
-3(0)
-4(0)
-4(0)
-4(0)
-4(0)
-4(0)
-4(0)
-4(0)
-4(0)
-4(0)
15
15
15
15
30
30
30
30
30
40
2
4.74
3
4.39
4
4.12
5
3.90
6
3.67
7
3.32
8
3.02
9
2.87
10
2.63
23
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11
12
13
14
15
16
2.33
1.99
1.70
1.35
1.00
0.50
40
40
40
40
70
70
-3(0)
-3(0)
-3(0)
-2(0)
-2(0)
-2(0)
14. REVERB+DELAY
Rev Time
No
1
Room Size Left Delay Right Delay
Left F.B.
48
Right F.B.
82
Rev level
80%
80%
80%
80%
80%
80%
80%
80%
90%
90%
90%
90%
90%
90%
90%
90%
2.90
2.90
2.90
2.90
2.40
2.40
2.40
2.40
2.10
2.10
1.50
1.50
1.50
1.50
1.00
1.00
39
39
39
39
39
39
39
39
26
26
26
26
26
26
26
26
375
326
300
277
258
241
230
211
375
326
300
277
258
241
230
211
187
163
150
138
129
120
115
107
187
163
150
138
129
120
115
107
28
67
2
28
67
3
28
67
4
28
60
5
28
49
6
28
49
7
28
49
8
48
82
9
28
67
10
11
12
13
14
15
16
28
67
28
67
28
60
28
49
28
49
28
49
15. REVERB+FLANGER
No
1
Rev Time
Room Size
Mod. Freq.
Pitch. Depth
Left F.B.
Rev level
90%
90%
90%
90%
90%
90%
90%
90%
90%
90%
90%
90%
90%
90%
90%
90%
2.90
2.90
2.90
2.90
2.90
2.90
2.90
2.90
1.50
1.50
1.50
1.50
1.50
1.50
1.00
1.00
39
39
39
39
39
39
39
39
26
26
26
26
26
26
26
26
2.52
2.25
1.99
1.61
1.22
0.80
0.54
0.16
2.52
2.25
1.99
1.61
1.22
0.80
0.54
0.16
40
40
40
50
70
70
70
70
40
40
40
50
70
70
70
70
40
40
40
40
60
60
70
70
40
40
40
40
60
60
70
70
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
24
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16. REVERB+CHORUS
No
1
Rev Time
Room Size
Mod. Freq.
4.74
4.12
3.67
3.02
2.63
1.99
1.35
0.50
4.74
4.12
3.67
3.02
2.63
1.99
1.35
0.50
Pitch. Depth
Left F.B.
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
Rev level
90%
90%
90%
90%
90%
90%
90%
90%
90%
90%
90%
90%
90%
90%
90%
90%
2.90
2.90
2.90
2.90
2.90
2.90
2.90
2.90
1.50
1.50
1.50
1.50
1.50
1.50
1.00
1.00
39
39
39
39
39
39
39
39
26
26
26
26
26
26
26
26
40
40
40
40
40
40
70
70
40
40
40
40
40
40
70
70
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
25
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8. SYSTEM BLOCK DIAGRAMS
S E N D E F X
A U X - 2
A U X - 1
B U S R I G H T -
L E F T - B U
S E N D E F X
A U X - 2
A U X - 1
B U S R I G H T -
L E F T - B U
S
S
26
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9. TECHNICAL SPECIFICATION
Mono input channels
Microphone input
electronically balanced, discrete input configuration
10Hz to 55kHz, + 3dB
Frequency response
Distortion (THD & N)
Gain range
0.005% at +4dBu, 1kHz
0dB to 44dB (MIC)
SNR (Signal to Noise Ratio)
115dB
Line input
electronically balanced
10Hz to 55kHz, + 3dB
0.005% at +4dBu, 1kHz
+15dBu to 30dBu
Frequency response
Distortion (THD & N)
Sensitivity range
Stereo input channels
Impedances
Line input
Unbalanced
Frequency response
Distortion (THD & N)
10Hz to 55kHz,
3dB
+
0.005% at +4dBu, 1kHz
Microphone input
Channel Insert return
All other inputs
Tape out
1.4kOhm
2.5kOhm
10kOhm or greater
1kOhm
All other output
120Ohm
Equalization
Hi shelving
Mid bell
+
+
+
15dB @12kHz
12dB @2.5kHz
15dB @80Hz
Low shelving
Low Cut filter
75Hz, 18dB/oct.
DSP Section (For AMX-140FX Model)
A/D and D/A converters
24 bit
DSP resolution
Type of effects
24 bit
Hall, Room, Vocal & Plate REVERBS
Mono & Stereo DELAY (max DELAY TIME 650ms)
Chorus, Flanger & Reverb MODULATIONS
REVERB+DELAY, REVERB+CHORUS,
REVERB+FLANGER combinations
256
Presets
Controls
16-position PRESET Selector
16-position VARIATION selector
PEAK LED
MUTE SWITCH with LED indicator
Main Mix Section
Noise (Bus noise)
Max output
Fader 0 dB, channels muted: 100dBr (ref.:+4dBu)
Fader 0dB, all input channels assigned and set to
UNITY gain: 90dBr (ref.:+4dBu)
+22dBu balanced XLR,
+22dBu unbalanced, 1/4" jacks
AUX Returns gain range
AUX Sends max out
-
to +20dB
+22dBu
27
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Power supply (AC/AC Adaptor)
Main voltage
USA/Canada
Europe
100 120V~, 60Hz
210 240V~, 50Hz
240V~, 50Hz
U.K./Australia
17.1 watts
Power Consumption
Physical
Dimension (W
D
H)
270mm 310mm 35/45mm
(7.79" 8.95" 1.01"/1.30")
3.0Kg (6.61lb)
Net weight
Shipping weight
3.6Kg (7.94lb)
28
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10. WARRANTY
1. WARRANTY REGISTRATION CARD
To obtain Warranty Service, the buyer should first fill out and return the enclosed Warranty Registration Card within
10 days of the Purchase Date.
All the information presented in this Warranty Registration Card gives the manufacturer a better understanding of
the sales status, so as to purport a more effective and efficient after-sales warranty service.
Please fill out all the information carefully and genuinely, miswriting or absence of this card will void your warranty
service.
2. RETURN NOTICE
2.1 In case of return for any warranty service, please make sure that the product is well packed in its original shipping
carton, and it can protect your unit from any other extra damage.
2.2 Please provide a copy of your sales receipt or other proof of purchase with the returned machine, and give detail
information about your return address and contact telephone number.
2.3 A brief description of the defect will be appreciated.
2.4 Please prepay all the costs involved in the return shipping, handling and insurance.
3. TERMS AND CONDITIONS
3.1 LTO warrants that this product will be free from any defects in materials and/or workmanship for a period
of 1 year from the purchase date if you have completed the Warranty Registration Card in time.
3.2 The warranty service is only available to the original consumer, who purchased this product directly from the
retail dealer, and it can not be transferred.
3.3 During the warranty service, LTO may repair or replace this product at its own option at no charge to you for
parts or for labor in accordance with the right side of this limited warranty.
3.4 This warranty does not apply to the damages to this product that occurred as the following conditions:
Instead of operating in accordance with the user's manual thoroughly, any abuse or misuse of this product.
Normal tear and wear.
The product has been altered or modified in any way.
Damage which may have been caused either directly or indirectly by another product / force / etc.
Abnormal service or repairing by anyone other than the qualified personnel or technician.
And in such cases, all the expenses will be charged to the buyer.
3.5 In no event shall LTO be liable for any incidental or consequential damages. Some states do not allow the exclu-
sion or limitation of incidental or consequential damages, so the above exclusion or limitation may not apply to you.
3.6 This warranty gives you the specific rights, and these rights are compatible with the state laws, you may also
have other statutory rights that may vary from state to state.
29
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SEIKAKU TECHNICAL GROUP LIMITED
No. 1, Lane 17, Sec. 2, Han Shi W. Road, Taichung, 401 Taiwan
All rights reserved to ALTO Mobile. Due to continued development in response to
customer feedback, product features, specifications and/or internal/external design may be
changed without prior notice. No photocopying, translation or reproduction of any part of this user
c
manual is allowed without prior written permission.Copyright 2004 Seikaku Technical Group Limited.
NF01658-1.0
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