Ashly MX-406 User manual

MX-406
Stereo
Microphone/Line
Mixer
Operating Manual
ASHLY AUDIO INC.
847 Holt Road Webster, NY 14580-9103 Phone: [phone]
Toll-Free: [phone] Fax: [phone]
www.ashly.com
Treble
Bass
Clip
-12 +12
8
7
6
1
3
4
010
5
RL
8
7
6
1
4
Lev el
Pan
9
Channel 6
7
6
1
2
3
4
010
5
9
7
64
010
5
9
6
1
4
010
5
9
8
7
64
010
9
On Power
Phant m
Stereo
Headphones
MX-406
Stereo
Six Channel
Mic/Line Mixer
Mono/Phones
Output
Stereo
Outputs
Mono Phones
RightLeft
10
9
7
6
5
1
4
0
5
Stereo
Aux In put Aux Master Output
Aux
-6
Output
VU
-L- -R-
-9
-12
-15
-18
-21
-3
0
+3
+6
Clip
0
Treble
Bass
Clip
-12 +12
7
6
1
3
4
010
5
RL
8
7
6
1
4
Lev el
Pan
9
Channel
Aux
0
Treble
Bass
Clip
-12 +12
7
6
1
3
4
010
5
RL
8
7
6
1
4
Lev el
Pan
9
Channel 4
Aux
0
Treble
Bass
Clip
-12 +12
7
6
1
3
4
010
5
RL
8
7
6
1
4
Lev el
Pan
9
Channel 3
Aux
0
Treble
Bass
Clip
-12 +12
7
6
1
3
4
010
5
RL
8
7
6
1
4
Lev el
Pan
9
Channel 2
Aux
0
Treble
Bass
Clip
-12 +12
7
6
1
3
4
010
5
RL
8
7
6
1
4
Lev el
Pan
9
Channel 1
Aux
0
-40
-60
-20
-40
-60
-20
-40
-60
-20
-40
-60
-20
-40
-60
-20
-40
-60
-20 Input
(dB)
Input
(dB)
Input
(dB)
Input
(dB)
Input
(dB)
Input
(dB)

2
Operating Manual -MX-406 Stereo Microphone/Line Mixer
Table Of Contents
1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 AC POWER REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4 FRONT PANEL CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
5 CONNECTORS AND CABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
6 REAR PANEL FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
7 TYPICAL APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7.1 Small Sound Reinforcement System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7.2 Meeting Room, Board Room, or Church Mixer Using Remote Control . . . . . . 9
8 TROUBLESHOOTING TIPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
8.1 No Sound . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
8.2 Distorted Sound . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
8.3 Excessive Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
8.4 Excessive Hum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
9 DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
10 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
11 WARRANTY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
12 SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-14

3
Operating Manual - MX-406 Stereo Microphone/Line Mixer
1. INTRODUCTION
Congratulations on your purchase of an Ashly
MX-406 stereo mic/line mixer, a professional, studio qual-
ity solution to everday mixing needs. MX-406 features
include six channels of mic or line inputs with mic input
pad, TRS insert points, and +48V phantom power. Each
channel has up to 60dB input gain, separate treble and
bass controls, an aux send control, level, and a stereo pan
control. An aux input is provided for a stereo program
source such as tape or CD. Outputs include aux master,
stereo line out (pre-master), stereo left and right, trans-
former balanced mono out, and stereo headphones. A
full 11 segment LED array indicates stereo output level.
Stereo main outputs use 1/4" jacks, stereo aux
input and line out use RCA connectors, and a transformer
isolated 600 ohm mono output uses an XLR connector.
Ashly mixers still use professional quality 16mm metal
shaft potentiometers for greater accuracy and long life
and of course,Ashly products come with a worry-free five
year warranty.
2. UNPACKING
As a part of our system of quality control, every
Ashly product is carefully inspected before leaving the
factory to ensure flawless appearance. After unpacking,
please inspect for any physical damage. Save the ship-
ping carton and all packing materials , as they were care-
fully designed to reduce to minimum the possibility of
transportation damage should the unit again require pack-
ing and shipping. In the event that damage has occurred,
immediately notify your dealer so that a written claim to
cover the damages can be initiated.
The right to any claim against a public carrier
can be forfeited if the carrier is not notified promptly and
if the shipping carton and packing materials are not avail-
able for inspection by the carrier. Save all packing mate-
rials until the claim has been settled.
3. AC POWER REQUIREMENTS
The MX-406 mixer will perform normally from
93 to 125 volts AC, 50-60Hz (some export models are
wired for 240 Volts and are labeled accordingly). Use
only properly grounded AC receptacles. To reduce the
risk of ground loop hum, use a central point for system
AC power distribution. In the event of fuse failure, refer
this unit to a qualified service technician for fuse replace-
ment using only the same type fuse. Power consumption
is less than 20 watts.
WARNING:
THIS APPARATUS MUST BE EARTHED
The exclamation point within an eqilate al
t iangle is intended to ale t the use to the
p esence of impo tant ope ating and
maintenance inst uctions in the lite atu e
accompanying the device.
The lightning flash with a owhead
symbol, within an equilate al t iangle, is
intended to ale t the use to the p esence
of uninsulated "dange ous voltage"
within the p oduct's enclosu e that may be
of sufficient magnitude to constitute a isk
of elect ic shock to pe sons. TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT RE-
MOVE COVER. NO USER SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK,
DO NOT EXPOSE THIS APPlIANCE TO RAIN OR MOISTURE.
TO REDUCE THE RISK OF FIRE, REPLACE ONLY WITH
SAME TYPE FUSE. REFER REPLACEMENT TO QUALIFIED
SERVICE PERSONNEL.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN

4
Operating Manual -MX-406 Stereo Microphone/Line Mixer
4. FRONT PANEL CONTROLS
4.1 Input Gain
This three position switch sets the operating level
of the microphone and line input preamp. The correspond-
ing switch values -20db, -40dB, and -60dB refer not to
the actual gain, but rather to the expected nominal input
signal strength.
Best signal to noise ratio is obtained with higher
gain settings. It is therefore desirable to set the gain con-
trol as high as possible while still leaving 20dB of head-
room for signal peaks. Line level inputs (1/4" jack) will
likely use a setting of -20dB, while mic inputs generally
require a setting of -40dB for close mic applications, and
-60dB for quieter signals. If a channel's clip LED is blink-
ing, first turn down that channel's level control. If the
clip LED is still flashing, turn down the input gain.
4.2 Clip
Input Clip LEDs are peak sensitive and monitor
all critical points within the input channel. The clip LED
turns on whenever any portion of the audio path within
the input channel reaches a level 3 dB below actual clip-
ping. Clipping in the MX-406 occurs at +20dB.
4.3 Treble/Bass
This concentric knob is used for broad EQ
changes to each input channel. Channel EQ consists of a
high shelf control (treble) at 4KHz, and a 250Hz low shelf
control (bass). EQ boost or cut is ±12dB.
4.4 Aux
The aux send is an additional level control used to
send signal from each input channel to monitors, an effect
unit, or another mix. The aux master output combines all
six channel's aux level signals. The aux control is factory
set to pre-fader, pre-EQ, but can be internally switched to
post-fader, post EQ. To make this change, refer the fol-
lowing procedure to a qualified service technician:
Unplug the unit's AC power cord from the outlet.
Remove the bottom cover which is fastened by seven 6-32
screws. Locate the 3 pin header labeledAUX at the middle
of the back edge of the front portion of the channel cir-
cuit board. Remove the shunt bar from the "Pre" position
indicated on the circuit board legend and place the shunt
on the "Post" position.
4.5 Level and Pan
This concentric knob adjusts the level and stereo
position of each channel. If a channel's level control is
always turned up to 9 or more, try increasing the gain
first. Conversely, if the level control is consistently turned
down to 1 or less, decrease the gain setting first. Re-
member that the gain setting should be set as high as pos-
sible while still allowing 20dB of headroom.
4.6 Stereo Line Input
This control adjusts the level of the RCA jack
stereo line input. It can be used for tape, CD, or DVD
audio inputs, and can also be used for a stereo effect re-
turn. For expanding the channel capacity of the MX-406,
Treble
Bass
Clip
-12 +1 2
8
7
6
1
3
4
010
5
RL
8
7
6
1
4
Level
Pan
9
Channel 6
Aux
0
Treble
Bass
Clip
-12 +1 2
7
6
1
3
4
010
5
RL
8
7
6
1
4
Level
Pan
9
Channel
Aux
0
Treble
Bass
Clip
-12 +1 2
7
6
1
3
4
010
5
RL
8
7
6
1
4
Level
Pan
9
Channel 4
Aux
0
Treble
Bass
Clip
-12 +1 2
7
6
1
3
4
010
5
RL
8
7
6
1
4
Level
Pan
9
Channel 3
Aux
0
Treble
Bass
Clip
-12 +1 2
7
6
1
3
4
010
5
RL
8
7
6
1
4
Level
Pan
9
Channel 2
Aux
0
Treble
Bass
Clip
-12 +1 2
7
6
1
3
4
010
5
RL
8
7
6
1
4
Level
Pan
9
Channel 1
Aux
0
-40
-60
-20
-40
-60
-20
-40
-60
-20
-40
-60
-20
-40
-60
-20
-40
-60
-20
Input
(d B)
Input
(d B)
Input
(d B)
Input
(d B)
Input
(d B)
Input
(d B)
8

5
Operating Manual - MX-406 Stereo Microphone/Line Mixer
the stereo line input can be used as stacking inputs for
supplementing the MX-406 with another mixer, such as
an Ashly LX-308 stereo line level mixer.
4.7 Aux Master Output
This control adjust the level of the aux master
¼" jack output, which gets it's signal from the six aux
level controls on the input channels. It is used for an
effects unit send, or can drive a power amplifier for moni-
tors or an extra loudspeaker zone.
4.8 Stereo Output Level
These two controls determine the signal level to
the ¼" jack left and right outputs. They are used to drive
power amplifiers for the main loudspeakers, or to con-
nect to a stereo recording device.
4.9 Mono Output Level
This control adjusts the level of the summed mono
output. It is completely independent of the main left and
right master controls. In other words, changes to either
left or right output level will not affect the mono output
level.
4.10 Headphones Level
This control adjusts the level of the stereo signal
to the headphone jack. Headphones should have an im-
pedance of 600 ohms or greater, or signal distortion may
result.
4.11 Output Meters
A pair of peak reading 10 segment LED meters
are used to indicate stereo output level in VU. 0 VU is
equivalent to +4 dBu (1.228Vrms).
Green LED's are used below 0 VU, yellow above
0VU and two red LED's indicate clipping. The clip LED's
turn on 3dB below actual clipping, detecting excessive
signal level on any critical audio path within the master
section. If all outputs are turned down and there is still
clipping, then one or more inputs must be turned down.
4.12 Phantom Power LED
The phantom power switch is on the back panel.
When the switch is pressed in, the LED is lit and +48VDC
is applied to all six mic inputs for use with condenser
microphones. If there is a mix of both condenser and
dynamic microphones, the phantom power will not affect
the operation of the most dynamic mics.
7
6
1
2
3
4
010
5
9
7
64
010
5
9
6
1
4
010
5
9
8
7
64
010
9
On
Power
Phant m
Stereo
Headphones
MX-4 06
Stereo
Six Channel
Mic/Line Mixer
Mono/Phones
Output
Stereo
Outputs
Mono Ph on es
RightLeft
10
9
7
6
5
1
4
0
5
Stereo
Aux Input Aux Master Output -6
Output
VU
-L- -R-
-9
-12
-15
-18
-21
-3
0
+3
+6
Clip

6
Operating Manual -MX-406 Stereo Microphone/Line Mixer
5. CONNECTORS AND CABLES
The MX-406 mixer is fitted with four types of
audio connectors: 3-pin XLR type male (mono output),
3-pin XLR type female (mic inputs), 1/4" tip-ring-sleeve
(TRS) phone jack, and RCA jack. Certain 1/4" jack con-
nections may use an unbalanced mono plug, which is also
shown.
Audio Connector Types
Tip (+)
Ring (-)
Sleeve (Gnd)
Stere Ph ne Plug
used f r balanced
2 = (+)
3 = (-)
1 = (gnd)
XLR pins are
numbered
n the
c nnect r
insert.
XLR Male
XLR Fem ale
Tip (+)
Sleeve (Gnd)
M n Ph ne Plug
used f r unbalanced
RCA Plug
(+)
(Gnd)
Two-conductor (twisted pair) shielded cable is
best for all XLR type connections. Belden No. 8412 or
its equivalent is an excellent cable due to its heavy con-
struction. This type of cable should be used for all por-
table applications. Snake cables containing multiple
shielded pairs must be handled very carefully because the
leads tend to be fragile, and a broken conductor is diffi-
cult to repair.
If low level and high level lines are run parallel
for long distances, crosstalk may occur. In fact, the
crosstalk (signal leakage between cables) can cause an
electronic feedback loop, oscillation, and possibly dam-
age to the equipment. To minimize crosstalk, physically
separate low level (microphone) cables from speaker
cables by the greatest feasible distance. At any point
where cables meet, run low level cables perpendicular to
high level or speaker cables. If low and high level or
speaker cables must be run parallel and in close proxim-
ity to one another, they should be bundled separately. In
a permanent installation,avoid running speaker cables and
mic cable through the same conduit pipe.
6. REAR PANEL FEATURES
6.1 Microphone Input
The MX-406 microphone input is an active bal-
anced type with a nominal impedance of 1200 ohms. Its
noise performance is best with a 200 ohm microphone.
The Mic input connector is a standard 3-pin XLR female
with the shield on pin 1, the (+) in-phase connection on
pin 2, and the (-) out-of-phase connection on pin 3.
Stereo
Outputs
Right
Mono
Output
(Transformer
Bala nced)
Model MX-406
Made In USA
100-120VAC
0-60Hz 1 W
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
+48V
Phant m
P wer
Left
Aux
Master
Output
Stere
Line
Input
Stere
Line Out
-L-
-R-
Ch.
6
Tip=O
u
M
PUSH

7
Operating Manual - MX-406 Stereo Microphone/Line Mixer
6.5 Stereo Line Input
The stereo line RCA inputs have a nominal oper-
ating level of -10dBu to match most consumer audio
sources. This signal is controlled by the Stereo Line In-
put dial on the front panel. This input is also used as a
stereo effects return, or as a stacking input for adding
additional mixers.
6.6 Stereo Line Out
The stereo line outputs are nominal -10dBu "pre-
master", so they are not affected by the settings of the
main Left/Right output controls. These outputs would be
used for making a pre-output fader recording off of the
stereo mix, or for stacking the MX-406 stereo output into
another mixer.
6.7 Aux Master Output
The 1/4" jack aux master output is used to drive
a monitor or zone amplifier, effects processor, recording
device, or any function which requires level control inde-
pendent from the main stereo mix. It is pseudo-balanced,
which means that while it is a single ended signal, it has
balanced impedance for low noise when driving an active
balanced input circuit over a long distance.
6.8 Mono Output
The XLR mono output combines the left and right
stereo signals (pre output fader), and uses an isolation
transformer capable of driving 600 ohm lines. Pin 1 is
6.2 Input Pad
The input pad is a 20dB attenuation switch on
the rear panel for use with the XLR microphone inputs.
It should normally be left in the "out" position for best
signal to noise ratio and should only be used when the
input is being overdriven with the gain control at its mini-
mum setting.
6.3 Line Input
The line input is a standard 1/4" TRS active bal-
anced type found in the same "combo jack" connector as
the mic input. The line input balanced impedance is
20KΩ. It will accommodate a wide range of input levels.
6.4 Channel TRS Insert
A channel TRS insert patch point allows a de-
vice such as a remote level controller, graphic equalizer,
noise gate, compressor/limiter, or direct out recording
device to be used with one or more input channels.
The MX-406 TRS insert jacks use the tip for out-
put and ring for the returning input. These signals will
be unbalanced, so cable length should be at a minimum
to maintain low noise.
To use the TRS insert as a Direct Line Output
(pre EQ) for recording, you must make a special cable
with tip and ring connected at the MX-406 end and a tip-
sleeve mono plug at the other end. Connecting tip and
ring at the mixer insert jack is necessary for uninterrupted
signal within the mixer when using direct line outputs.
(-)(+)
2
3
1
-20dB Pad
(Mic Only)
6
Insert
ut R ing=In
Ch.6
M
ic/Line Input
-20dB Pad
(Mic Only)
Ch. Insert
Tip=Out R ing=In
Ch.5
Mic/Line Input
-20dB Pad
(Mic Only)
Ch.4 Insert
Tip=Out Ring=In
Ch.4
Mic/Line Input
-20dB Pad
(Mic Only)
Ch.3 Insert
Tip=Out R ing=In
Ch.3
Mic/Line Input
-20dB Pad
(Mic Only)
Ch.2 Insert
Tip=Out R ing=In
Ch.2
Mic/Line Input
-20dB Pad
(Mic Only)
Ch.1 Insert
Tip=Out Ring=In
Ch.1
Mic/Line Input
PUSH PUSH PUSH PUSH PUSH

8
Operating Manual -MX-406 Stereo Microphone/Line Mixer
ground, pin 2 is (+), and pin 3 is (-). This signal is determined by the mono output level control, with a nominal
operating level of +4dBu.
Note: The mono transformer-balanced output is designed to drive up to +24dBu into 600 ohm loads. Because
of the nature of an output transformer, the output level increases as the impedance of the terminating load becomes
higher than 600 ohms. Whereas a "direct-coupled" output stage like that of the right and left outputs will not change
as the load changes, any transformer used in an audio path is affected by its termination impedance. Since line level
inputs on audio devices are typically 10K
Ω or higher, expect a slight increase (2.5dB) in output level when driving
conventional active 10K Ω inputs with the transformer outputs.
6.9 Stereo Outputs
The 1/4" jack stereo right and left outputs are controlled by the left and right master. They are pseudo-
balanced TRS jacks with a nominal operating level of +4dBu into any load, and are capable of driving long lines.
6.10 +48V Phantom Power Switch
This switch applies +48VDC to all six XLR mic inputs to power condenser microphones. Phantom power will
not affect most dynamic mics, which may be used along with condenser mics.
7. TYPICAL APPLICATIONS:
7.1 Small Sound Reinforcement System:
In the setup shown here, the MX-406
is used to mix typical sound sources
that might be found in a church, small
club, school theater or similar environ-
ment. Four of the input channels are
used for vocal microphones, while the
remaining two channels are used for
stereo accompaniment tracks. The ste-
reo line input is used for additional
pre-recorded music such as that of a
movie soundtrack or CD player. Ste-
reo line output RCA jacks are used to
record the event to a cassette, video
camera, or even a PC with recording
capabilities.
Stage monitors are fed using the aux
mix to the master aux output, and left
and right outputs drive the main speak-
ers. The mono output drives a 70 Volt
distributed sound system amplifier,
used for plenum (ceiling) speaker in-
stallations.
MX-406
Microphone
Mixer
Four Vocal
Mic Inputs
EQ,
Limiter,
Crossover,
Amplifier,
etc.
(-)(+)
231
Stereo
Outputs
Right
Mono
Output
(Tran sf ormer
Bal a n c e d)
Mod el MX-406
Made I n USA
100-120VAC
0-60Hz 1 W
CAUTION
RIS K O F ELECTRIC SHOCK
DO NOT OPEN
+4 8V
Ph ant m
P wer
Left
Aux
Master
Output
Ste re
Li ne
Input
Ste re
Li ne Out
-L-
-R-
-20dB Pad
(Mi c Only)
Ch.6 Insert
Ti p =O u t R i n g=I n
Ch.6
Mic/Line Input
-20dB Pad
(Mi c Only)
Ch. I nsert
Ti p =O u t Ri n g=I n
Ch.5
Mic/Line Input
-20dB Pad
(Mi c Only)
Ch.4 Insert
Ti p =O u t Ri n g=I n
Ch.4
Mic/Line Input
-20dB Pad
(Mi c Only)
Ch.3 Insert
Ti p =O u t Ri n g=I n
Ch.3
Mic/Line Input
-20dB Pad
(Mi c Only)
Ch.2 Insert
Ti p =O u t Ri n g=I n
Ch.2
Mic/Line Input
-20dB Pad
(Mi c Only)
Ch.1 Insert
Ti p =O u t Ri n g=I n
Ch.1
Mic/Line Input
PUSH PUSH PUSH PUSH PUSH PUSH
Main
Right
(L)
MX-406 Small Sound Reinforecement System
Accompaniment Tracks
Cassette Player
(R)
(Aux) Monitor
Amplifier Monitor
Main
Left
VCR, CD, DVD Player
Audio Output
Recording
Device
(Stereo
Line Out)
70 Volt Distributed
Sound System Amp
(Stereo
Line Input)
(Mono
Output)
(Stereo
Outputs)

9
Operating Manual - MX-406 Stereo Microphone/Line Mixer
7.2 Meeting Room, Board Room, or Church Mixer Using Remote Control:
In this illustration, the MX-406 is interfaced with an Ashly VCM-88 eight channel remote level controller,
allowing the mixer to be operated from a distance by a non-technical person. Remote control of the VCM-88 is
achieved through the use of Ashly's RD-8 desk-top remote controller, RW-8 wall-plate version, or PC control using
Protea System Software. The RD-8 and RW-8 use a single mic cable for control data, while PC control uses RS-232
serial communications. Remote control can be located up to 1,300 feet from the main audio equipment rack.
8. TROUBLESHOOTING TIPS
8.1 No Sound
Check the AC power. Is the power switch on? Check the level meters. If they are operating, the problem is
between the mixer and the later components in the system. If there is no meter activity, check to see that you really
have an input signal and that it is on the desired channel.
8.2 Distorted Sound
Something is being overdriven in the signal path. If the clip indicators are active, reduce the channel gain
and/or press in the pad switch on the rear panel. There are many gain adjustments in the mixer itself and probably
several others in other system components which makes it possible to overdrive an input section and then incorrectly
try to reduce the gain of the output section. The best way to approach setting gains is to establish the operating level
of input stages first by setting their gain as high as possible but leaving about 20dB of headroom for loud peaks, then
move on to set the master gain to produce a good meter reading. Proceed to set the gain of equalizers, limiters,
crossovers, and amplifiers following the mixer in the same manner, always working toward the later stages of the
system.
100-120VAC
0-60Hz 1 W
Data Inp ut
2
3
1
DataV+
Ashly Audi Inc.
M d el VCX- 80
Made In US A
INPUTS are Acti ve Balanced ( Tip is +, Ring i s -) .
OU TPU TS Ma y Be Wir e d B al an c ed r Un bala nced .
**TRS Inserti n Is Available - See Owner's Manual**
Ch.2
DC C ontrol
Ch.8 Ch.7 Ch.6 Ch. Ch.4 Ch.3
Ch.1
InIn Out In Out In Out In Out Out In Out In Out
In Out
1 - Ch.1
2 - Ch.2
3 - Ch.3
4 - Ch.4
5 - Ch.5
6 - Ch.6
7 - Ch.7
8 - Ch.8
9 - Mas t er
10 - C ntr l CCW
11 - (Aux Gr und)
12 - C ntr l CW
13-14 - (Aux Data In)
15 - NC
1
9
Remot e Control
AVI S:
RIS QUE DE
CHOC ELECTRI QUE.
NE PAS OU VRIR.
1210
Pi n 1- 9
10K CW
** ** ** ** ** ** ** **
Master Out put
MX-406
Microphone
Mixer
(Single Jack
TRS Inserts Used)
RD-8 Remote Controller
With 3-Pin XLR Data Cable
VCM-88
Channels 1-6
Patched Into
MX-406 Channel
Insert Points
Channels 7-8
Used For Mixer
Output Control
Up To
Six Mic/Line
Inputs
(-)(+)
2
3
1
Stereo
Out put s
Le ft
Mono
Out put
(Tr a n sf o r m e r
Bal a n ce d)
Model MX- 4 0 6
Made In USA
100-120VAC
0-60Hz 1 W
CAUTION
RIS K O F ELECTRIC SHOCK
DO NOT OPEN
+4 8V
Ph ant m
P wer
Right
Aux
Mast e r
Out put
Ste re
Aux
Input
Ste re
Li ne Out
-L-
-R-
-20dB Pad
(Mi c Only)
Ch.6 In se r t
Ti p =O u t Ri n g=I n
Ch.6
Mic/Lin e In put
-20dB Pad
(Mi c Only)
Ch. In se r t
Ti p =O u t Ri n g=I n
Ch.5
Mic/Lin e In put
-20dB Pad
(Mi c Only)
Ch.4 In se r t
Ti p =O u t Ri n g=I n
Ch.4
Mic/Lin e In put
-20dB Pad
(Mi c Only)
Ch.3 In se r t
Ti p =O u t R i n g=I n
Ch.3
Mic/Lin e In put
-20dB Pad
(Mi c Only)
Ch.2 In se r t
Ti p =O u t Ri n g=I n
Ch.2
Mic/Lin e In put
-20dB Pad
(Mi c Only)
Ch.1 In se rt
Ti p =O u t Ri n g=I n
Ch.1
Mic/Lin e In put
PUSH PUSH PUSH PUSH PUSH PUSH
Speaker
Zone 2
+10
-70
+5
0
-5
-10
-20
-30
-50
-
-15
+10
-70
+5
0
-5
-10
-20
-30
-
-50
∞
-15
RD-8
R em ot e Lev el C ontr ol
XLR Data C n nect r
On T p r Back.
D N t Use
Transf rmer s.
Ch.1
On
Ch.2 Ch.3 Ch.4 Ch. Ch.6 Ch.7 Ch.8 Master
Rem te
Disabled
Gain (dB) Gain (dB)
V+
1
3
2
Data On
∞
Typical Application of MX-406 with VCM-88/RD-8 Remote Control
(L) (R)
EQ,
Limiter,
Crossover,
Amplifier,
etc.
Speaker
Zone 1
(L) (R)
(L)
(R)

10
Operating Manual -MX-406 Stereo Microphone/Line Mixer
8.3 Excessive Noise
If the noise is in the form of hiss, the problem is
usually due to an input stage set for insufficient gain and
then compensating for it by increasing the level. Try in-
creasing gain and reducing level. Also, check that the -
20dB rear panel pad switch is not unnecessarily enabled.
8.4 Excessive hum
This is usually caused by "ground loops" in the
system wiring. A complex sound system with many
sources separated by significant distance and using sev-
eral power outlets has many opportunities for this prob-
lem to occur. If possible, feed everything in the system
from one power source with a common ground. Use bal-
anced input and output connections between widely sepa-
rated components.
If you need help, get in touch with your Ashly
dealer or call an Ashly technical service representative.
9. DIMENSIONS:
6. 0
MX-406 Mixer
3.2
3. 0
0.00
0.2
0.00
0.2
18.7
19.00