Transcript
MX-406 Stereo Microphone/Line Mixer
Operating Manual Channel 1 -60 -40 -20 Input (dB)
Channel 2 -60 -40 -20 Input (dB)
Clip 0
Treble Bass
Treble Bass -12 4
5
+12 6
3 Aux
5
+12 6
3 Aux
1 Level Pan
0
10
4
6
9
0
10
4
6
R
3
9
L
R
+12 6
3
0
10
4
6
9
0
10
4
6
7
L
R
+12 6
3
9
0
10
4
6
L
R
+3 5
1
0
10 6
7
L
R
8 9
8 1
L
R
4
5
Aux Master Output 4
6
5
6
5
4
6
4
5
Mono/Phones Output 6
7
7
3
Stereo Outputs
1
4
5
6
7
7
0
10
9
0
10
9
1
0
10
Left
9
0
10
Right
9
-3 -6 -9 -12 -15
8
2 7
Level 8 Pan
1
Stereo Aux Input
7
4
MX-406 Stereo Six Channel Mic/Line Mixer
0
+12 6
3
9
-R+6
Aux 1
Level 8 Pan
1
-LClip
-12 4
7
7
Level 8 Pan
1
5
Aux 1
Clip 0
Treble Bass -12 4
7
Aux 1
Level 8 Pan
1
5
Channel 6 -60 -40 -20 Input (dB)
Clip 0
Treble Bass -12 4
7
7
Level 8 Pan
L
+12 6
Aux 1
7 1
5
Channel 5 -60 -40 -20 Input (dB)
Clip 0
Treble Bass -12 4
7
Channel 4 -60 -40 -20 Input (dB)
Clip 0
Treble Bass -12 4
7
Channel 3 -60 -40 -20 Input (dB)
Clip 0
1
0
Mono
10
9
Phones
Stereo Headphones
-18 -21 Output VU
On Phantom
ASHLY AUDIO INC. 847 Holt Road Webster, NY 14580-9103 Phone: (585) 872-0010 Toll-Free: (800) 828-6308 Fax: (585) 872-0739 www.ashly.com
Power
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
2
Operating Manual - MX-406 Stereo Microphone/Line Mixer
The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous volt age" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.
CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN
The exclamation point within an eqilateral triangle is intended to alert the user to the presence of import ant operating and maintenance instructions in the literature accompanying the device.
TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE 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.
WARNING: THIS APPARATUS MUST BE EARTHED
1. INTRODUCTION Congratulations on your purchase of an Ashly MX-406 stereo mic/line mixer, a professional, studio quality 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, transformer 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.
transportation damage should the unit again require packing 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 available for inspection by the carrier. Save all packing materials 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 replacement using only the same type fuse. Power consumption is less than 20 watts.
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 shipping carton and all packing materials , as they were carefully designed to reduce to minimum the possibility of
3
Operating Manual -MX-406 Stereo Microphone/Line Mixer Chan nel 1 -6 0 -4 0 -2 0 Input (d B)
Chan nel 2 -6 0 -4 0 -2 0 Input (d B)
C lip 0
Treble Bass
Chan nel 3 -6 0 -4 0 -2 0 Input (d B)
C lip 0
Treble Bass -1 2 4
5
+1 2
3
-1 2 4
7
5
+1 2
3
-1 2 4
7
Level Pan
9 0
10
4
6 7 8
1
L
R
0
10
4
6 7
Level Pan
8 1
L
R
4.1 Input Gain This three position switch sets the operating level of the microphone and line input preamp. The corresponding 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 control as high as possible while still leaving 20dB of headroom 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 blinking, 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 clipping. 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.
0
+1 2
-1 2 4
7
5
+1 2
3
9 0
10
4
6 7
Level Pan
8 1
L
R
0
-1 2 4
7
5
+1 2
3
9 0
10
4
6 7
Level Pan
8 1
L
R
0
-1 2
6
4 7
Aux 1
C lip
Treble Bass
6
Aux 1
Chan nel 6 -6 0 -4 0 -2 0 Input (d B)
C lip
Treble Bass
6
3
9
4. FRONT PANEL CONTROLS
4
5
Aux 1
Chan nel 5 -6 0 -4 0 -2 0 Input (d B)
C lip
Treble Bass
6
Aux 1
0
Treble Bass
6
Aux
Chan nel 4 -6 0 -4 0 -2 0 Input (d B)
C lip
5
+1 2 6
3
7
1
9
Aux 1
9 0
10
4
6 7
Level Pan
8 1
L
8 0
10
4
6 7
Level Pan
R
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 following 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 labeled AUX at the middle of the back edge of the front portion of the channel circuit 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. Remember that the gain setting should be set as high as possible 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 return. For expanding the channel capacity of the MX-406,
8 1
L
R
Operating Manual - MX-406 Stereo Microphone/Line Mixer
-L-
-R C lip +6 +3
MX-4 06 Stereo Six C han nel Mic/Line Mixer
0
Stereo Aux In put 4
5
Aux Ma ste r O utput
6
3
4
5
6
7
4
5
Stereo O utputs 6
5
4
Mono/Ph on es O utput 6
7
4
5
2
7
9 0
10
9 0
10
1
9 0
10
Left
9 0
10
R ight
Stereo H e adph on es
-1 2 -1 5
8 1
-6 -9
6
7
-3
1
9 0
Mono
10
Ph on es
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 monitors or an extra loudspeaker zone.
-1 8 -2 1 O ut put VU
On Phanto m
Power
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 0 VU 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.
4.8 Stereo Output Level 4.12 Phantom Power LED 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 connect to a stereo recording device. 4.9 Mono Output Level
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.
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 impedance of 600 ohms or greater, or signal distortion may result.
5
Operating Manual -MX-406 Stereo Microphone/Line Mixer
Model MX-406 Made In USA
Stereo Outputs +4 8V Phantom Power
CAUTION
RISK OF ELECTRIC SHOCK DO NOT OPEN
Mono Output (Transformer Balanced)
Right
Aux Master Output
Left 100-120VAC 50-60Hz 15W
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 connections may use an unbalanced mono plug, which is also shown.
(Gnd) Tip (+)
(+)
Ring (-)
RCA Plug
Sleeve (Gnd) Stereo Phone Plug used for balanced Tip (+) Sleeve (Gnd) Mono Phone Plug used for unbalanced
XLR pins are numbered on the connector insert.
Audio Connector Types
6
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 construction. This type of cable should be used for all portable applications. Snake cables containing multiple shielded pairs must be handled very carefully because the leads tend to be fragile, and a broken conductor is difficult 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 damage 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 proximity 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
XLR Male
6.1 Microphone Input
XLR Female
The MX-406 microphone input is an active balanced 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.
2 = (+) 3 = (-) 1 = (gnd)
Stereo Line Input
Stereo Line Out
PUSH
M
-L-
Ch.6
Tip=Ou -R-
Operating Manual - MX-406 Stereo Microphone/Line Mixer
C h.6
C h.5
C h.4
C h.3
C h.2
C h.1
-2 0 d B Pad (Mic O nly)
-2 0 d B Pad (Mic O nly)
-2 0 d B Pad (Mic O nly)
-2 0 d B Pad (Mic O nly)
-2 0 d B Pad (Mic O nly)
-2 0 d B Pad (Mic O nly)
Mic/Line Input
6 Insert
ut R ing=In
Mic/Line Input
Mic/Line Input
Mic/Line Input
Mic/Line Input
Mic/Line Input 3 1
PUSH
PUSH
PUSH
PUSH
PUSH
2
(+ ) (-)
Ch.5 Insert
Tip=Out R ing=In
Ch.4 Insert
Tip=Out R ing=In
Ch.3 Insert
Tip=Out R ing=In
Ch.2 Insert
Tip=Out R ing=In
Ch.1 Insert
Tip=Out R ing=In
6.2 Input Pad
6.5 Stereo Line Input
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 minimum setting.
The stereo line RCA inputs have a nominal operating level of -10dBu to match most consumer audio sources. This signal is controlled by the Stereo Line Input dial on the front panel. This input is also used as a stereo effects return, or as a stacking input for adding additional mixers.
6.3 Line Input
6.6 Stereo Line Out
The line input is a standard 1/4" TRS active balanced 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.
The stereo line outputs are nominal -10dBu "premaster", 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.
6.4 Channel TRS Insert A channel TRS insert patch point allows a device 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 output 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 tipsleeve 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.
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 independent 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
7
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 10KΩ 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 pseudobalanced 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:
VCR, CD, DVD Player Audio Output
7.1 Small Sound Reinforcement System: Accompaniment Tracks Cassette Player (Stereo Line Input)
70 Volt Distributed Sound System Amp (Mono Output) Ch .6 Model MX-406 Made In USA
+48V Phantom Power
CAUTION
100-120VAC 50-60Hz 15W
Ch .5
-20dB Pad (Mic Only)
-20dB Pad (Mic Only)
Mic/Line Input
Right Left
Ch .4
Ch .3
-20dB Pad (Mic Only)
Ch .2
-20dB Pad (Mic Only)
Mic/Line Input
Ch .1
-20dB Pad (Mic Only)
Mic/Line Input
-20dB Pad (Mic Only)
Mic/Line Input
Mic/Line Input
3
1
PUS H
PUS H
PUS H
2 Stereo Line Input
Stereo Line Out
Aux Master Output
PUS H
Mono Output (Transformer Balanced)
Mic/Line Input PUS H
Stereo Outputs
RI S K O F E LE C T RI C SH O C K DO N O T O PE N
Stage monitors are fed using the aux mix to the master aux output, and left and right outputs drive the main speakers. The mono output drives a 70 Volt distributed sound system amplifier, used for plenum (ceiling) speaker installations.
Four Vocal Mic Inputs
PUS H
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 environment. Four of the input channels are used for vocal microphones, while the remaining two channels are used for stereo accompaniment tracks. The stereo line input is used for additional pre-recorded music such as that of a movie soundtrack or CD player. Stereo line output RCA jacks are used to record the event to a cassette, video camera, or even a PC with recording capabilities.
(+) (-)
-L-
Ch.6 Insert
Tip=Out Ring=In
Ch.5 Insert
Tip=Out Ring=In
Ch.4 Insert
Tip=Out Ring=In
Ch.3 Insert
Tip=Out Ring=In
Ch.2 Insert
Tip=Out Ring=In
Ch.1 Insert
Tip=Out Ring=In
-R-
MX-406 Microphone Mixer Recording Device
(Stereo Line Out)
(Stereo Outputs)
(Aux) (R)
Monitor Amplifier
EQ, Limiter, Crossover, (L) Amplifier, etc.
Monitor
Main Right Main Left
MX-406 Small Sound Reinforecement System
8
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.
Up To Six Mic/Line Inputs RD-8 Remote Controller With 3-Pin XLR Data Cable Mode l MX-406 Made In USA
+5 0 -5 -10 -15 -20 -30 -50 -70 -∞
RD -8 R e mot e Le v el C on tr ol
Gain (dB)
+5 0 -5 -10 -15 -20 -30 -50 -70 -∞
Ste re o Output s +48V Phantom Power
CAUTION RI S K O F E LE C T RI C SH O C K DO N O T O PE N
Gain (dB)
Ch .6
Ch .5
-20dB Pad (Mic Only)
-20dB Pad (Mic Only)
Mic/Line In put Mic/Line In put
(L)
Stereo Aux Input
Stereo Line Out
A ux Maste r Output
Le ft
Ch .3
Ch .2
-20dB Pad (Mic Only)
-20dB Pad (Mic Only)
Ch .1 -20dB Pad (Mic Only)
Mic/Line In put 2
Mon o Output (Tran sform er Balan ce d)
R igh t
1 00-1 2 0V A C 5 0-6 0H z 15 W
Ch .4 -20dB Pad (Mic Only)
Mic/Line In put Mic/Line In put Mic/Line In put
(+) (-)
-L-
C h .6 In se rt
C h .5 In se rt
Tip=Out Ring=In
C h .4 In se rt
Tip=Out Ring=In
C h .3 In se rt
Tip=Out Ring=In
Tip=Out Ring=In
C h .2 In se rt
Tip=Out Ring=In
C h .1 In se rt
Tip=Out Ring=In
-R-
EQ, Limiter, Crossover, Amplifier, etc.
(R)
R e m ot e C on tr ol Data Input 2
3
Ashly Audio Inc. Model VCX-80 Made In USA
1
V+ Data
1
MX-406 Microphone Mixer (Single Jack TRS Inserts Used)
(R)
Speaker Zone 1 (L)
3
PUS H
+10
PUS H
On Maste r
PUS H
XLR Data Connector On To p or Back. Do Not Us e Trans formers. Remote Disabled
PUS H
2
D a ta
+10
PUS H
V+
C h .1 C h .2 C h .3 C h .4 C h .5 C h .6 C h .7 C h .8
PUS H
3
1
On
1 00-1 2 0V AC 5 0- 60H z 15 W
C h .8 **
In
(L) (R)
Master Out put
INPUTS are Active Balanced (Tip is +, Ring is -). OUTPUTS May Be Wired Balanced or Unbalanced. **TRS Insertion Is Available - See Owner's Manual** AVI S: RISQUE DE CHOC ELECTRIQUE. NE PAS OUVRIR.
Out
C h .7 **
In
Out
C h .6 **
In
Out
C h .5 **
In
Out
10
12 10K CW Pin 1-9
C h .4 **
In
Out
DC C on trol
**
In
Out
1 9
C h .3
C h .2
**
In
Out
1 - Ch.1 2 - Ch.2 3 -- Ch. Ch.4 3 4 5 - Ch.5 6 - Ch.6 7 - Ch.7
8 - Ch.8 9 - Mas ter 10 CCW 11 -- Control (Aux Ground) 12 - Control CW 13-14 - ( Aux Data In) 15 - NC
In **
Out
C h .1
VCM-88 Channels 1-6 Patched Into MX-406 Channel Insert Points Channels 7-8 Used For Mixer Output Control
Speaker Zone 2
Typical Application of MX-406 with VCM-88/RD-8 Remote Control
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.
9
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 increasing 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 several power outlets has many opportunities for this problem to occur. If possible, feed everything in the system from one power source with a common ground. Use balanced input and output connections between widely separated components. If you need help, get in touch with your Ashly dealer or call an Ashly technical service representative.
9. DIMENSIONS: 3.50 3.25
MX-4 06 Mixer
10
1 8 .7 5
1 9.00
0.2 5
0.00
0.25 0.00
6.50
Operating Manual - MX-406 Stereo Microphone/Line Mixer 10. SPECIFICATIONS
11. WARRANTY INFORMATION
DISTORTION THD at +4 dBu, 20Hz-20KHz . . . . . . . . . . . . . . . . . . <0.008% THD at +12dBu, 30Hz-10KHz . . . . . . . . . . . . . . . . . . . <0.03% IMD (SMPTE) at +12dBu . . . . . . . . . . . . . . . . . . . . . . . <0.03%
Thank you for your expression of confidence in Ashly products. The unit you have just purchased is protected by a five-year warranty. To establish the warranty, be sure to fill out and mail the warranty card attached to your product. Fill out the information below for your records.
HUM & NOISE (20Hz-20KHz at max preamp gain) equivalent input hum and noise . . . . . . . . . . . . . . . . . <-128dBu residual output noise, TRS outputs, all levels at minimum . . . . . . . . . . . . . . . . . . . . . . . . . <-110dBu residual output noise, XLR output, all levels at minimum . . . . . . . . . . . . . . . . . . . . . . . . . . <-98dBu aux output, aux master and all ch. aux at nominal . . . . . . . . . . . . . . . . . . . . . . . . . . <-90dBu MAXIMUM VOLTAGE GAIN (±2dB) MASTER Mic/Line Input to Master Outputs . . . . . . . . . . . . . . . . . +92dB Mic/Line Input to Mono Output, 600 ohm load . . . . . +88dB AUX SENDS Mic Input to Aux Master Output, pre ch. level . . . . . . . . 72dB Mic Input to Aux Master Output, post ch. level . . . . . . . 92dB Stereo Line In to Master Output . . . . . . . . . . . . . . . . . . . . 28dB
Model Number ________________________________ Serial Number _________________________________ Dealer
______________________________________
Date of Purchase _______________________________ Dealer’s Address _______________________________ Dealer’s Phone ________________________________ Salesperson ___________________________________
FREQUENCY RESPONSE 20Hz-20KHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +0.5/-1.0dB EQUALIZATION Bass . . . . . . . . . . . . . . . . . . . . . . ±12dB at 70Hz, shelving Treble . . . . . . . . . . . . . . . . . . . . . . ±12dB at 8KHz, shelving CROSSTALK adjacent inputs, 20Hz-20KHz . . . . . . . . . . . . . . . . . . . . <-65dB VU METERS Stereo outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -21 to +6 VU 0VU = +4dBu PEAK INDICATORS Peak Clip indicator on each input channel and left and right outputs, illuminates 3dB below clipping PHANTOM POWER +48 VDC applied to all Mic Inputs, switchable on rear panel. Maximum total current draw = 80mA. Maximum single channel current draw = 14mA. Gradual power-up and down to eliminate "pops". SHIPPING WEIGHT 13 lbs. POWER REQUIREMENTS 120 VAC nominal, 93 VAC minimum, 50-60 Hz, 20 watts (240 VAC available)
*unless otherwise stated, specification conditions are: 150Ω source, Input Level set at "-60", all other controls set at nominal, XLR output into 600Ω or greater.
11
3
4
5
6
7
8
D24 1N4003 HS1 1
J3
AC-SW
2
SW1
ACF
R100 1.5K
AC
L G N
3 4
ACN
24VAC1
10
SW2
out
11
C36 .1U
out 5
1N4003
1N4003
D22
D23
1N4003
1N4003
C27 1000u
C28 1000u U7 7915
24VAC2 35VAC1
12 7
ACINLET
D21
+15
2
+15M
D27 1N4003
C29 1.5u
R98 2.4k
GND
C30 1.5u
HS2
C38 .1U
C37 .1U
D26 1N4003
35VAC2
8
J4
51P7106
0
J26 6 5 4 3 2 1
J6
J5
D
D25
D28 1N4003 R99 1.5K
35VAC1 35VAC2 24VAC1 GND 24VAC2
J20B
J21B
D35
Q5 2N4123
R66
R109
2.4K
390K C39 R112 .1U 62K
6
R30 100K
D
5
D34 1N977
D31 1N4003
SW3B HS3
4
45P2600
Q2 2N5551
Q4 TIP29C
1
R80 3.3K
R101
+48
R107
1N4148 D7 Q3
C34 100U
22
2N5551
R24 220
Q6 2N4123
J21G
J20C
D36
R102
-15M
C
J20D
J20E
J21D
J21E
+15M
2.7k R
J21C
Q8 2N4123
+15M
-15M
LEFT OUTPUT LEVEL (db) +15M D55
G
D51
D49
G
G
D47
G
D45
D43
G
G
D41
Y
D39
Y
RIGHT OUTPUT LEVEL (db) +15M D56
D37
Y
Meter Card
G
D54
G
D52
D50
G
G
18 17 16 15 14 13 12 11 10
G
D53
D48
D46
D44
D42
D40
D38
G
G
G
Y
Y
Y
18 17 16 15 14 13 12 11 10
390K C40 R113 .1U 62K
Q1 2N5401
C33
+15M
R110
R105 18K
2.7k
J20G
2.4K
1
45P2600 OUT
R
Q7 2N4123
R68
0
2
100U
C
RCLIP
R7 10K
D30 1N4003
D29 1N4003
LCLIP
0
C35
R61 10
J7
R139
0
1N4003
.1U
65VAC
None
-15M
R29
3
AC-GND
R138
-15
Phantom SW3A 3
Phantom D33 R
3
In Out
+15M
R28
E
Power D32 G
-15
EG
+15
3
In Out
2
1/2 AGC F1
D20
2
AC SWITCH E
L2
U6 7815
1
120/240 SELECT
LPOST
R37
R31
33K
100K D59
1K D60
C31 1.5U
D57 J21A 1N754
R91 4.7K
J20H
R56
R32 100K D61
1K D62
+15M
R115
9.09k
33k
LED5 LED6 LED7 LED8 LED9 LED10
LM3915
J21H
C $VKO\ $XGLR ,QF 847 Holt Road Webster, NY 14580-9103
C32 R92 4.7K
1.5U R67
LM3915 LED3 LED4
LED2
RPOST R38 33K
U11
LED1 VV+ RLO SIG IN RHI REF OUT REF ADJ MODE
LED5 LED6 LED7 LED8 LED9 LED10
-15M
1N754 D58
1 2 3 4 5 6 7 8 9
J20A
R55
LM3915
1 2 3 4 5 6 7 8 9
-15M
U10
LED1 VV+ RLO SIG IN RHI REF OUT REF ADJ MODE
LED2
B
LM3915 LED3 LED4
B
+15M
R69
R116
9.09k
33k
Phone: (716) 872-0010 Fax: (716) 872-0739 Size
A 2 3
13
U8A
1 12
34184
U8D
B
14
34184
Sheet #
1
of
Drawn By
1
A->B @ 157% S:\Engineering\CLIENT98\5400\10s5401b.sch
2
3
4
Print Date 10:56:30 Rev.
26-Jul-2002
xxx PCB APPROVED:
1
James B Franks
5
MX-406 Power and Metering
6
Dwg # 7
8
A
A
12. SCHEMATIC DIAGRAMS
2
Operating Manual -MX-406 Stereo Microphone/Line Mixer
12 1
1
2
3
4
5
6
7
8
+15
C12 LBUS None
47P1304
14
U4D
12
VR5B B20K RCLIP
SUB IN STEREO AUX INPUT
J14
-R-
C13 RBUS None
C68
J23 None
47U
C
5
R40
7 LPRE
U1B
6.8K
LEFT MASTER LEVEL
C4 7
VR5A B20K
J11 +48 -15 +15 AUX GND-METER RBUS LBUS
14 13 12 11 10 9 8
U2B
5
VR3C B10K
9 J9A 3 5 11 7 1
R4 10K
7 Mono+
U3B
5
+8dB Max, -4.2dB Mid
R21 100
R59
47U
10
47U
U9B
2.7k
10K
3
3
7
R89
4.7K
6.8k
RIGHT 47P1304
4560
AUX OUTPUT
100
47U R17 10K
C25 10pf
R26 100
HEADPHONE LEVEL
3
1
U5A 2043
+20.2dB Max
J1
6
RPRE
R90
4.7K
B
VR3A C100K 47P3151
10 R97 62K
C26 10pf
5
HEADPHONE OUTPUT
R93 68
6
D1 1N4148
7
U5B 2043
R35 C19 33k 27P C2
2
RIGHT MASTER LEVEL
3
U2A
1
2043
R19
RPOST
100
47U R2 10K
4560
10 J9B 4 6 12 8 2
R22 100
C $VKO\ $XGLR ,QF 847 Holt Road Webster, NY 14580-9103
T
Phone: (716) 872-0010 Fax: (716) 872-0739
RIGHT OUTPUT
A
Size
B
Sheet #
1
of
Drawn By
1
A->B @ 157% S:\Engineering\CLIENT98\5400\10s5400b.sch
James B Franks
Print Date 10:53:20 Rev.
26-Jul-2002
xxx PCB APPROVED:
13
1
2
C
47P3151
R94 68
2
J8
1
R60
1 Mono-
U9A
3
R25
1 AuxPost
VR3B C100K
R96 62K
R65 2.4K
U3A
AUX MASTER LEVEL
R14418K
VR2 B10K
R41
1 RPRE
J25
R53 1K
J10 C11
2
R143 18K
2
RCLIP
2
U1A
5
+11.7dB Max, -1.5dB Mid
2 L1
4560
2
R46
5
2K
R36 C24 10k 27P
R42
7 AuxPre
51P9010
C14 27P
3
6
MONO OUTPUT
R5 10K
D5 1N4148
47U
1.5K
LEFT OUTPUT
C6
4560
R57 15K
C1
7
U4B
J2A
R48
VR4 B10K
R47
4560
3
1N4148
D
C5
34184
6
C10 AUX B
10K
RBUS
4.7K
LPRE
6
MONO MASTER LEVEL
D2
LEFT
47P1304
R54 1K
R8 10K
RPRE R9 10K
RBUS
47U
R108 C20 8.2k 27P
DIP14
R1 10K
U8B
5
R87
7
5
100
R6
B
34184
6
+16.5dB Max, +5.6dB Mid
None
D6 1N4148
R106 18K
6
2K
STEREO LINE OUTPUT
C16 27P R78
C8 47U
R20
LPOST
4560
2k
J2B
R49
1
U4A
RCLIP
27P
LCLIP
1 2 3 4 5 6 7
1N4148
C77 .001U
47U
R50
-15M +15M
22K
C23
6
R58 15K
2043
R72
8
1 6
C7
34184
2 3
D10
R142
R34 C18 33k 27P
C3
C76 .1U
R10 10K
LPRE R11 10K
LBUS
4.7K
D3 1N4148
VR1 B10K
2.7K
C75 .1U
R16 10K
+12dB Max, +1.6dB Mid
R45
27P
R88
8
U8C
LCLIP
1N4148
C74 .1U
E
C9 47U
3.3K
D4
C73 .1U
47U
U4C
10
None
J24
C72 .1U
34184
9
10k
47P1304
BKT3
0
LBUS
34184
9 10
C22 27P R15
2
R140 R141
C15
R79
D8 1N4148
R14
J2C
MX406 Input Channel 10s5402b.sch
R3 10K
1N4148
C17 27P 3.3K
None
D
22K
C71 .1U
10k
Right
MX406 Power and LEDs 10s5401b.sch
D9
3
4
5
MX-406 Motherboard Audio Sections
6
Dwg # 7
8
A
A
Operating Manual - MX-406 Stereo Microphone/Line Mixer
R75 None
C70 .1U
C69 .1U
R73 34184
13
10k
1
-L-
R13
3
J22 None
LCLIP
4
J2D R74 None
1N4148
C21 27P
Left
J13
D11
10k
4
E
R12
-15
2
3
4
5
6
7
8
MIC GAIN R121 560
SW6A
+20dB
R122 560
+40dB
E
R64
E
10
+60dB R81 3.3K C50 3300U J18G
+15 +48
R43 6.8K
J19A
MIC INPUT JACK-COMBO 1
+15M
+15
J17H
J17G
C41 .1U R44 6.8K R119 D12 1N4148
620 Out 1 SW5A
3
C60 2
47U/63V R118 160 -20dB PAD
C56
4
Out R120
47U/63V
10 D15 R129 R130 1N4148 2.55K 2.55K
C54
C48 .001U
None
C43 .1U J17A
2
100P
U12A
3
620 EG R137 None
R136
None
SIGNAL
100P
R127 5.90K
D14 1N4148
R95
None
R63
SW5B 5
BKT1 BRKT-GND
C53
100P
D
None
2N4125
J18A
R131 2.55K
C42
R132 2.55K
.1U
D19
Pre
1
1N4148
4560
C49 .001U
R71
R111
2.4K
390K
R114 62K
Q13 2N4125 Q12 2N4125
R103
-15
PRE
22k
VR9 R86
POST
C62
R33100k
+48 -15 +15 AUX GND-METER RBUS LBUS
C
DIP14
AUX
U12B 4560
7
470
HIGH R51 2.7k
R18 10k
LOW VR8A
C66
INSERT POINT
PEAKBUS
1N4148 VR8B R124
R123
B20k
.033u
+20dB Max, +9.4dB Mid
J18D 5
C45 .1U J17E
EQ
6 B20K
C58
C67 .22u
+15
7
R39 C59 33k 100p
R117
VR7A B5K
2
3.3k 3
4560
LEVEL
U13A
1
PostSig
R83
LBUS
3.3K 2
R84
3.3K
4560
RBUS B
3.3K
PAN -.2dB Center
-15
C47 .1U
R85
4
100p U13B
J18E
-15
R82 3.3K
VR7B
R70 2k
R52 2.7k
6
J17D +15 C44 .1U
B
D16 1N4148
470
C65
B20k
.22u
D18 1N4148
3
5
J18B
5
J17B
6
J15
14 13 12 11 10 9 8
B10K
D17
R27 100
1
47u
22k
1 2 3 4 5 6 7
3.3k
R76
JACK-COMBO
J12 -15M +15M
AUX SEND
J16
LINE INPUT
-15M
2.7k
R
R77
J19B
CLIP
D63
R128 C57 5.90K 100P
BKT2 BRKT-GND C
None
None R133
None
Q11
2N4125
10 C55
-15M
D64 R104
Q9 None
C61
6
Q15 None Q14 None
C52 None Q10
R62
3
C63 None
R134 None
C64
C51 None
D13 1N4148
R135 None
R126 5.90K
R125 5.90K
2
D
G
J18H
C46 .1U
+48
Break-Away Back Panel PCB
J17F
J18F
J17C
J18C +48
C $VKO\ $XGLR ,QF 847 Holt Road Webster, NY 14580-9103
Front Panel Panel PCB
Phone: (716) 872-0010 Fax: (716) 872-0739 Size
A
B
Sheet #
1
of
Drawn By
1
A->B @ 157% S:\Engineering\CLIENT98\5400\10s5402b.sch
James B Franks
Print Date 10:55:31 Rev.
26-Jul-2002
xxx PCB APPROVED: 1
2
3
4
5
MX-406 Input Channel
6
Dwg # 7
8
A
A
Operating Manual -MX-406 Stereo Microphone/Line Mixer
14 1
Operating Manual - MX-406 Stereo Microphone/Line Mixer
15
Operating Manual -MX-406 Stereo Microphone/Line Mixer
ASHLY AUDIO INC. 847 Holt Road Webster, NY 14580-9103 Phone: (585) 872-0010 Fax: (585) 872-0739 Toll Free (800) 828-6308 www.ashly.com 2002 by Ashly Audio Corporation. All rights reserved worldwide.
Printed in USA
MX406 Rev 0 0802
