DAPAudio Live Mix Pro 40-8 User manual

Live Mix Pro 40-8
ORDERCODE D2250

8 BUS MIXING CONSOLE
Caution:
To prevent electric shock do not use this ( polarized ) plug with an extension cord,receptacle or other
outlet unless the blades can be fully inserted to prevent blade exposure.
Introduction
Thank you for purchasing a 8 Bus SERIES Mixing Console. The 8 Bus Series provides an excellent balance of
operability, functionally and ease of use. In order to take full advantage of the 8 Bus Series capabilities and enjoy
years of trouble-free use,please read this Manual carefully.
Unpacking and Installation
Although it neither complicated to install nor difficult to operate your set, a few minutes of your time is required
to read this manual for a properly wried installation and becoming familiar with its many features and how to
use them.
Please take a great care in unpacking your set and not discard the carton and other packing materials. They may
be needed when moving your set and are required if it ever becomes necessary to return your set for service.
Never place the unit near radiators , in front of heating vents , to direct sun light, in excessive humid or dusty
location to avoid early damage and for your years of quality entertainment . Connect your complementary
compoments as illustrated in the following page.
CAUTION
RISK OF ELECTRIC SHOCK.
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK
DO NOT REMOVE COVER (OR BACK)
NO USER-SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL
This symbol is intended to alert the user
to the presence of important operation and
maintenance(servicing) instructions in the
literature accompanying the appliance.
8 BUS MIXING CONSOLE
This symbol is intended to alert the user
to the presence of uninsulated "dangerous
voltge" within the product's enclosure that
may be of sufficient magnitude to constitute
a risk of electric shock to persons.
WARNING:
TO Prevent fire or shock hazard.do not expose the unit to rain or moisture.
Pour prevenir les chocs electriques ne pas utiliser cette fiche polarisee avec un prolongateur, une prise
de lanmes peuvent etre inserees a fond sans en laisser aucune partie a decouvert.
ATTENTION:
1
8 BUS MIXING CONSOLE
11

Features
1. 32/40 CHANNELS MONO INPUTS
8 Mixing Console provideds 32,40 channels of mono input that can be mixed down to a Stereo Mix, 8 Groups,
8 Aux sends.
2. 4 CHANNELS STEREO INPUTS
These mixing consoles provides 4 channels of stereo channel input that can be mixed down to a Stereo Mix , 8
Gropus, 8 Aux sends.
3. 8 AUX SENDS, 6 STEREO AUX RETURNS
8 AUX SENDS systems and 6 STEREO AUX RETURN systems are provided.Even when two 1- in/2-out effect
devices are connected, two more AUX SEND systems are still available for use.
4. 4 BAND EQ WITH SWEEPABLE HIGH-MID,LOW-MID RANGE BAND
All mono input channels include 4 band equalizer with sweepable high-mid and low-mid range frequency.
5. XLR CONNECTOR AND 1/4″TRS CONNECTOR
XLR type connectors are provided for MIC jacks and 1/4″ TRS connectors are provided for the LINE and
TAPE IN jacks.
6. 8 GROUP MIXING BUSES
8 Group mixing buses, each with its own Master Fader,ON/OFF Switch to Stereo Mix Buses.
7. TAPE INPUT
You can connect the outputs of your multi-track recorder.
8. INPUT CH INSERT I/O JACK and DIRECT OUT JACK
INPUT CH INSTER I/O jack and DIRECT OUT jack are provided on each channel , allowing you to connect
effect devices independently for each channel.
9. MASTER INSTER I/O
INSTER I/O connector are provided on GROUP OUTPUT 1~8,STEREO MIX OUT and MONO OUTPUT,
allowing you to connect sub mixer or other sound device independently for each output.
10. SOLO SWITCH
It is handy for spot-checking the presence and quality of individual inputs while setting up,recording and mixing.
SOLO does not interrupt the eight main Master ,the L/R Mix OUT or AUX sends,and can be used at any time
without affecting the recording process.
11. 10 DOT LED DISPLAY
10-DOT LED Meter illuminated for precise visidual level monitoring.
2 point input level indicators on all input channel.
Especially status of Main Mix L/R Master be showed by analog VU Meter.
8 BUS MIXING CONSOLE
2

12. 100mm FADER
For easy set up and input,group master fader is used by Smooth and noise reduction 100-mm faders.
13. DC 12V LAMP CONNECTOR
A BNC type LAMP connector is provided on the right hand side of the mixing console panel, allowing you to
operate the mixer conveniently under dark condition.
14. External Power Supply
This system is used by high capaciry,high performance external power supply with current limiter.
Precautions
1. A VOID EXCESSIVE HEAT ,HUMIDITY,DUST AND VIBRATION
Keep the unit away from locations where it is likely to be exposed to high temperatures or humidity-such as near
radiators,stoves,etc.Also avoid location which are subject to excessive dust accumulation or vibration which could
cause mechanical damage.
2. AVOID PHYSICAL SHOCKS
Strong physical shocks to the unit can cause damage,Handle it with care.
3. D0 NOT OPEN THE CASE OR ATTEMPT REPAIRS OR MODIFICATIONS YOURSELF
This product contains no user-serviceable parts.Refer all maintenance to qualified service personnel.
Opening the case and/or tampering with internal circuitry voids the warranty.
4. ALWAYS POWER OFF BEFORE MAKING CONNECTIONS
Always turn the power OFF before connecting or disconnecting cables . This is important to prevent damage to
the unit itself as well as other connected equipment.
5. HANDLE CABLES CAREFULLY
Always plug and unplug cables-including the AC power cord-by gripping the connector,not the cord.
6. CLEAN WITH A SOFT DRY CLOTH
Never use solvents such as benzine or thinner to clean the unit. Wipe clean with a soft,dry cloth.
8 BUS MIXING CONSOLE
3

1
1
2
3
5
4
8
6
7
1
9
10
Front Panel Controls
1. MONO INPUT SECTION
1. PEAK INDICATOR
This indicator detects peak level after the EQ.It will light red at 3dB
before clipping to warn that clipping level has nearly been reached.
Peak indicator is not going through MIX B Section.
2. SIGNAL INDICATOR
This indicator detects signal level after the EQ. It will light green at
- 10dB.
Signal indication is not going through MIX B Section.
3. TRIM CONTROL
According to the level of the input signal,use this knob to adjust the
input to an appropriate level.
The best balance of S/N and dynamic range will be achieved if you
adjust the TRIM control so that the peak indicator lights
occasionally.
4. MIC/LINE INPUT SELECTOR
This switch selects the input connector for the channel.
When MIC/LINE ( ) is selected, the input signal will be taken Mic
connector (Balanced XLR type).
When TAPE ( ) is selected , the input signal will be taken
LINE connector (Balanced phone jack).
5. MIC/LINE OR TAPE INPUT SELECTOR (FLIP
SWITCH)
This switch selects the input connector for the channel.
When MIC/LINE ( ) is selected, the input signal will be taken
MIC/LINE connector(Balanced XLR type).
When TAPE ( ) is selected , the input signal will be taken
TAPE connector(Balanced phone jack).
6. HIGH-PASS FILTER SWITCH
This switch turns on/off a high-pass filter that cuts the signal below
80Hz at 18dB/ octave. By using the high-pass filter, you can reduce
or get rid of minimizing room rumble , mic pop-ping noise, traffic
noise ,wind noise and other unwanted low-frequency noises.
8 BUS MIXING CONSOLE
4
1

10 20 50 100 200 500 1K 2K 5K 10K 20K 50K
+20
+15
+10
+5
+0
-5
-10
-15
-20
+20
+15
+10
+5
+0
-5
-10
-15
-20
10 20 50 100 200 500 1 2K 5K 10K 20K 50K
+20
+15
+10
+5
+0
-5
-10
-15
-20
10 20 50 100 200 500 1K 2K 5K 10K 20K 50K
1)HIGH:12KHz±15dB shelving type
LOW:80Hz, ±15dB shelving type
2)HI-MID:800Hz-8KHz(variable)
±15dB peaking type
3)LOW-MID:160Hz-1.6KHz
(variable), ±15dB peaking type
7. 4BAND EQ CONTROLS(HIGH, HI-MID ,
LOW-MID, LOW)
This is a 4 - band equalizer with center frequencies, range, and
type as shown below. The frequency response is flat when the
knob is in the center position.
8. AUX 1~8 CONTROLS
This knobs control the level of the signals sent to AUX buses.
- The AUX 1 ~ AUX 4 controls are pre-fader, and the signal
levels sent to the AUX 1~AUX 4 buses will be unaffected by the
channel fader setting .
- The AUX 5 / AUX 7 and AUX 6 / AUX 8 controls will be
affected by the POST/PRE SELECT SWITCH and SHIFT 7/8
SIGNAL SELECT SWITCH setting.
9. AUX 5~8 POST/PRE SELECT SWITCH
- POST( ,RELEASAED SWITCH):
Selects the post-fader signal from the point in the channel after
the MUTE OFF switch. Because the signal feeding this position
will be subject to any adjustments to that channels inputs fader,
this position is usually preferred for effects or echo mixes.
- Pre( ,DEPRESSED SWITCH):
Pre-Fader signal is taken from the stage preceding the fader EQ,
so it is not affected by the channel's fader.
10. AUX 5~8 SIGNAL SELECT SWITCH(SHIFT)
This SHIFT 7/8 SWITCH connects the two level controls ( as a
pair) to either AUX 5＆6 sends or to AUX 7＆8 sends.
When this switch turns on, the AUX signal will be shifted from
AUX 5/AUX 6 to AUX 7/AUX 8.
In this case ,you can adjust AUX 7 / AUX 8 signal with AUX5/
AUX 6 controls.
8 BUS MIXING CONSOLE
5

12
11
1113
1114
15
19
16
18
17
GROUP 1 GROUP 2 GROUP 3 GROUP 4 MIX L MIX R
AUX 1
AUX 2 AUX 3 AUX 5 AUX 4 AUX 7 AUX 6
PFL CTRL
SOLO L SOLO R MIX-B L MIX-B R AUX 8 GROUP 5 GROUP 6 GROUP 7 GROUP 8
2
3
1HA
HA
AUX 4
AUX 3
AUX 7
AUX 8
ST R
ST L
AUX 1
AUX 2
GR 6
GR 5
GR 7
GR 8
GR 2
GR 1
GR 3
GR 4
AUX 5
AUX 6
PAN
MUTE
SIGNAL PEAK
CHANNEL
FADER
FREQ FREQ
MIX-B
HI-LOW EQ
MIX-B
SOURCE
FLIP
CHANNEL
LEVEL
PAN
PARAMETRIC
EQ
HI MID LOW MID
11. PAN CONTROL FOR MIX-B
The PAN control routes the channel's MIX-B signal across the left
and right MIX-B buses.
12. LEVEL CONTROL FOR MIX-B
The LEVEL control sets the level of the channel sent to the MIX-B
buses. The gain structure of the circuit(like the AUX sent 1-6 circuit)
includes extra amplification.
13. SPLIT EQ SELETOR
Each channel strip has a dual signal path with extremely flexible
switching . This allows either the mic/line input or tape return inputs
to be routed through either the channel fader path or MIX-B with
separate EQ and monitoring.The SPLIT switch in the MIX-B section
sprits the EQ section of the channel when depressed . In the up-
position, all four sections of EQ remain, if engaged, in the primary
channel signal path feeding the channel fader and the 8-plus 2 buses.
In this mode there is no equalization in the MIX-B path.
When SPLIT switch is depressed, the HI and LO shelving sections
of the EQ are removed from the channel signal and inserted into the
MIX-B signal path ,The HI-MID and LO-MID parametric sections
of the EQ remain ,if engaged, in the channel signal path. The SPLIT
function allows you to EQ the channel's signal and its MIX-B signal
separated.
MIC/LINE
+48V
PHANTOM
POWER
-18dB/-80dB
FLIP
TRIM 80Hz
(18dB/0CT)
SHELVING
EQ
HIGH LOW
OPTIONAL
METER BRIDGE
CH-OUT
3 STAGE EQ
PRE
POST
B+
8 BUS MIXING CONSOLE
6
MIC
-50dB
LINE
-20dB
MONO INPUT
TAPE IN
DIRECT
OUT
0dB
OPTIONAL
METER BRIDGE
TAPE IN
HPF
CHANNEL INSERT
0dB

14. SOURCE SWITCH
When the MIX-B SOURCE switch is up,MIX-B receives its input from the FLIP switch .Remember,the FLIP
switch alternates MIC/LINE or TAPE to channel strip and to MIX-B.
- With TAPE as an input (SOURCE up to select the FLIP switch and MIC/LINE or TAPE switch in the up
position),the MIX-B section functions as a tape monitor sub-mix, allowing you to listen to the inputs and outputs
of your multi-track record as you record.This is the most common use of the MIX-B section, during tracking and
overdubbing.
- With MIX/LINE as an input (SOURCE up to select the FLIP switch, and MIX/LINE or TAPE switch in the
down position), MIX-B becomes an additional input to add tracks or effects during a mix-down.
- With CHANNEL as an input (SOURCE down in CHANNEL position),MIX-B taps its signal from the channel
fader.
15. PAN CONTROL
This control adjusts the stereo position of the signal between the stereo L/R buses,and also between odd and even
pairs of Buses 1 through 8.
This control allows you to place the channel's input signal within the stereo image by assigning more or less of
the signal to the left or right sub-master controls.
Turning the Pan control to the left (odd/L)of center moves the apparent source toward the left channel and Group
1,3,5,7 buses, turning it to the right moves the source toward the right channel and Group 2,4,6,8 buses.
16. CHANNE MUTE SWITCH
When this switch is off, the signal of each channel will be the MAIN MIX L/R buses ,the Group 1～8 buses and
AUX 1～8 buses.
When this switch is on , the output signal to each bus muted completely. This switch should be turned on for
unused channels.The channel's mute switch does not affect the channel's insert output or direct output.
17. BUS ASSIGH SWITCH
When these switchs are engaged, the channel's input signal can be routed to the 8 group busses.
In conjunction with selecting the group routing, the position of the channel's pan control determines if a signal is
routed to Group 1 or 2, 3 or 4, 5 or 6, Group 7 or 8 and/or Mix L or If the pan control is panned left, it will be
routed Group 1,3,5,7 and / or Mix L ; if the pan control is panned right, the signal will appear at Group 2, 4, 6,8
and/or Mix R.
18. CHANNEL FADER
The 100-mm audio taper fader controls the output level of channel that is fed to Mix master and Sub Group
master.
The channel fader should optimally be set near the"o"level when all other controls are set to their normal settings.
19. SOLO SWITCH
The channel SOLO switch assigns the output of channel PAN control to the stereo solo buses . SOLO does not
interrupt ,the eight sub-master , the L/R Mix OUT or AUX sends, and can be used at any time without affecting
the recording process.
SOLO is handy for spot-checking the presence and quality of individual input while setting up , recording and
mixing. The channel SOLO function is normally post fader/post mute.
5
8 BUS MIXING CONSOLE
7

Mono Input PC Board Drawing
※ Modification
These modifiction instructions are for use by qualitied personal only.
- AUX Send 1～4 modifiction
This modifiction changes the option point of all "pre"AUX sends from pre-EQ to post-EQ.
It must be done on each channel.For example,if you have a 24 channel modifiction must be done on all 24 input
channel.See below figure.
1) Remove power cable
2) Remove jumper at J75/PRE & J87/PRE
3) Add a jumper at J80/POST & J83/POST
4) Repeat for of all input channels
- MIX-B modification
This modifiction changes the option point of the MIX-B from pre-EQ to post-EQ.
It must be done on each channel.For example, if you have a 24 channel modifiction must be done on all 24 input
channel.See below figure.
1) Remove power cable
2) Remove jumper at J89/PRE
3) Add a jumper at J90/POST
4) Repeat for of all input channels
J61 J63 J65 J67 J69
12 13 14 15 16
2 2 3 3 3
J83
J75
PRE
POST
PRE
POST
J89
PRE
POST
J90
J87
AUX3/4
J73 J76 J81 J84
J91 J92
AUX1/2
MIX-B
J80
J72
8 BUS MIXING CONSOLE
8

11
2
7
3
4
5
6
8
10
9
1. PEAK INDICATOR
This indicator detects peak level after EQ.It will light red at 3dB
before clipping to warn that clipping level has nearly been
reached.
2. SIGNAL INDICATOR
This indictor detects signal level after the EQ . It will light green
at -10dB.
3. EQ CONTROLS(HIGH,LOW)
This is a 2-band frequency fixed equalizer with center fre-
quencies range and type as shown below.
HIGH: 12Hz,±15dB shelving type
LOW: 80Hz,±15dB shelving type
4. AUX SEND CONTROLS
This knobs controls the level of the signals sent to Aux buses.
- The AUX 1&2 controls the STEREO channel 1 &3 PANEL
are pre-fader and the signal levels sent to the AUX 1 & 2 buses
will be unaffected by the channel fader setting.
- The AUX 3&4 controls on the STEREO 2&4 PANEL are
post-fader and the signal levels sent to the AUX 3&4 buses will
beaffected by the channel fader setting.
5. BALANCE CONTROL
This control adjusts the balance or the L/R position of the stereo
input signal.
Turning the BALANCE control to left of center moves the
apparent source toward the MAIN MIX L and Group 1, 3, 5, 7
buses, turning it to the right move the source toward the MAIN
MIX R and Group 2,4,6,8 buses.
6. L/R (STEREO) SWITCH
When these switches are on, the signal of each channel will be
sent to the MAIN MIX L/R buses. When this switch is of, the
output signal to MAIN MIX L/R buses will be muted.
2. STEREO INPUT SECTION
8 BUS MIXING CONSOLE
9

7. GROUP SELECTOR (GROUP BUS ASSIGH SWITCH)
When these switch are on , the signal of each channel will be sent to the 8 GEROUP buses. These switches is
arranged in two columns.
Odd numbered Left(Group 1, 3, 5, 7) and even numbered, Right(Group 2, 4, 6, 8) indicating which "side" of the
BALANCE control they will be assigned to.
8. CHANNEL MUTE SWITCH
When this switch is engaged, (depressed position) the signal of each stereo channel will be muted in the MAIN
MIX L/R buses, the Group1-8 buses and AUX 3-4 buses.
The channel MUTE switch does not affect the pre-position of the AUX 1 ＆ 2 signal on the STEREO PANEL,
but, it does affect the post-position of the AUX 3 ＆ 4 signal on the STEREO 2,4 PANEL.
9.CHANNEL SOLO SWITCH
The channel SOLO switch assigns the output of the channel PAN control to the stereo solo buses.
10.CHANNEL FADER
This fader controls the output level of the input channel signal, determining the volume balance between channels.
The channel fader should be lowered for unused channels.
※ PAD SWITCH(STEREO INPUT SENSITIVITY SELECT)
If you select STEREO INPUT SENSITIVITY to either-10dB or +4dB.
Look at the STEREO INPUT PC Board. The PAD SWITCH is setted 10dB position initially on STEREO INPUT PC
Board.
This switch selects the appropriate gain for the input signal level.
The sensitivity is -10dB when the switch is slided toward left hand side, and + 4dB when it is slided toward right hand
side.
C78
-10dB
R109
SW9
IC7
C79
R108
C81
C80
J129
R116
R117
C89
R119
C90 C94
R114
-10dB
+4dB
PAD
+4dB
C95
R123 R124
C97 C98
R115
J138
R122
SW10 R128
IC8
R136
C103
R139
C107 R143
R140
C105
C104
R137
C106
J145
J143
C100
J142
J140
C99
R129
C96
J139
R102
R103
8 BUS MIXING CONSOLE
10

GROUP 1 GROUP 2 GROUP 3 GROUP 4 MIX L MIX R
AUX 1
AUX 2 AUX 3 AUX 5 AUX 4 AUX 7 AUX 6
PFL CTRL
SOLO L SOLO R AUX 8 GROUP 3 GROUP 5 GROUP 6 GROUP 7 GROUP 8
GR 1
GR 2
GR 4
GR 3
GR 5
GR 6
GR 7
GR 8
ST L
ST R
HA
R
HA
HIGH
LOW
L/MDNO
GR 1
GR 2
GR 4
GR 3
GR 5
GR 6
GR 7
ST L
ST R
GR 8
LEVEL
LEVEL
PEAK
SIGNAL
MUTE
BALANCE
HA
STEREO INPUT
-10dB +4dB
HA
HIGH
LOW
L/MONO
R
CH2 4
CH1 3
-10dB
LEVEL
BALANCE
MUTE
GROUP 3 MIX L
STERCO INPUT
-10dB +4dB
+4dB
-10dB
+4dB
-10dB
+4dB
-10dB
+4dB
SOLO
POST
AUX(CH2,4)
POST
AUX(CH2,4)
PRE
AUX1(CH1,3)
TONE
SOLO
TONE
PRE
AUX1(CH1,3)
B+
B+
PAD
PAD
PEAK
SIGNAL

11
1
2
3
4
LEVEL
L/MONO
BALANCE
R
AUX RETURN 1-6
ST L
GR 8
GR 7
GR 5
GR 6
ST R
GR 4
GR 3
GR 1
GR 2
GROUP 1 GROUP 2 GROUP 3 GROUP 5 MIX L MIX R
AUX 1
AUX 2 AUX 3 AUX 5 AUX 4 AUX 7 AUX 6
PFL CTR L
SOLO L SOLO R MIX-B L MIX-B R AUX 8
1. L/R (STEREO) SWITCH
When this switch is on ,the signal of each AUX RETURN will be sent to
the MIX L/R buses. When this switch is off, the output signal to MIX L/
R buses will be muted.
2. GROUP SELECTOR (GROUP BUS ASSIGN SWITCH)
When these switches are on , the signal of each AUX RETURN will be
sent to the 8 GROUP buses.
3. BALANCE CONTROL
This control directs the signal coming from the AUX RETURN level
control into the left and/or right channels. Turning the BALANCE control
to the left of center moves the apparent source toward the left channel.
Turning it to the right moves the source toward the right channel.
Centering the control makes the apparent source appear to be centered
between the channels.
4. LEVEL CONTROL
This control adjusts the input levels from the effect units etc. Connected
to the L/MONO, R jacks of AUX RETURN 1~ 6 are sent to the MIX L/R
buses,and 8 Group buses.
If a plug is inserted into only the L/MONO jack, the same signal will be
sent to L/R BALANCE control.
3. AUX RETURN SECTION
GROUP 4 GROUP 6 GROUP 7 GROUP 8
8 BUS MIXING CONSOLE
12

1
2
3
SA LA
MUTE
AUX SEND 1-8
AUX SEND 1
+4dB
GROUP 1 GROUP 2 GROUP 3 GROUP 4 MIX L MIX R
AUX 1
AUX 2 AUX 3
AUX 5
AUX 4 AUX 7 AUX 6
PFL CTRL
SOLO L SOLO R MIX-B L MIX-B R AUX 8
SOLO
B+
LEVEL
MUTE
MIX L MIX R
AUX 1
4. AUX SEND SECTION
1. MUTE SWITCH
When this switch is engaged, the signal from each respective AUX
SEND will be muted to the corresponding AUX sent connector.
2. SOLO SWTCH
when you wish to monitor the output signals being sent to AUX SEND
1~6 , press the appropriate switch.
3. LEVEL CONTROL
The AUX SEND master adjusts the overall mix level on each res-
pective AUX buses . The signal sent is the summed total of the indivi-
dual sends on each input channel routed to a particular AUX SEND.
8 BUS MIXING CONSOLE
13
GROUP 5 GROUP 6 GROUP 7 GROUP 8

2
1
3
4
5
LED METER (GROUP)
GROUP 1~8
+4dB
GROUP 9~16
GROUP 17~24
GROUP 1 GROUP 2 GROUP 3 GROUP 4 MIX L MIX R
AUX 1
AUX 2 AUX 3 AUX 5 AUX 4 AUX 7 AUX 6
PFL CTRL
SOLO L SOLO R MIX-B L MIX-B R AUX 8
SOLO
B+
TO MAX
PAN
GROUP 1 INSERT
0dB
GROUP 1-24
GROUP 1~8
+4dB
GROUP 9~16
GROUP 17~24
SA
MUTE
MASTER
FADER
5. GROUP SECTION
1. TO MIX SWITCH
When this switch is on, the signal of each GROUP will be sent to the
STEREO MIX L/R buses.
2. MUTE SWITCH
When this switch is on, the signal of each Group will not be sent to the
Group connectors.
3. SOLO SWITCH
Pressing this switch will allow you to monitor the output signals being
sent to Group 1~8, press the appropriate switch.
4. PAN CONTROL
This control adjusts the panning of the GROUP signal sent to the
STEREO MIX L/R buses.
5. LEVEL CONTROL
This fader adjust the final level of the combined signals from all combined
signals from all channels and send them to the GROUP output jacks.
The GROUP 1~8 level meters allow you to monitor the GROUP outputs.
8 BUS MIXING CONSOLE
14
GROUP 5 GROUP 6 GROUP 7 GROUP 8

2
13
5
4
1
1
GROUP 1 GROUP 2 GROUP 3 GROUP 4 MIX L MIX R
AUX 1
AUX 2 AUX 3 AUX 5 AUX 4 AUX 7 AUX 6
PFL CTRL
SOLO L SOLO R MIX-B L MIX-B R AUX 8
SA
MASTER
FADER
L
R
MAIN MIX
+4dB
MONO OUT
+4dB
2
3
1
2
3
1
STERE0 L INSERT
0dB
MASTER
FADER
SA
STERE0 L INSERT
0dB
STERE0 R INSERT
0dB
2
3
1
STERE0 L INSERT
0dB
MASTER
FADER
STERE0 L INSERT
0dB
6. MASTER SECTION
1. TO MIX SWITCH
When this switch is on , the signal of MIX-B will be sent to the
STEREO MIX L/R buses.
2. MIX-B CONTROL
This control adjust the MIX-B final level of the combined signals
from all channels and send them to the MIX-B output jacks.
3. STUDIO OUT CONTROL
This is a stereo level control for the studio.
This circuit monitors the left/right SOLO buses.
4. MIX L/R MUTE SWITCH
When this switch is off, the signal of MIX L/R will be sent to the
MIX L/R connectors. When this switch is on , the MIX L/R output
signal to MIX L/R connectors will be muted.
5. MIX L/R MASTER FADER
These 100-mm faders adjust the final level of the combined signals
from all channels and send them to the MIX L/R output jacks. The
MIX L/R level meters allow you to monitor the MIX L/R outputs.
Rated output(Nominal) level is achieved with the fader set at“0”on
the scale.
GROUP 5
GROUP 6
GROUP 7 GROUP 8
8 BUS MIXING CONSOLE
15

3
1
2
7. CONTROL ROOM and MONO SECTION
1. SOURCE SELECTOR SWITCH
The control room monitors and the studio playback monitors are both
controlled from this console. A bank of switches selects the stereo
sources available to the speakers from L/R MIX , MIX-B, 2-TRACK
and EXTERNAL. You can select any combination of signal source.
2. CONTROL ROOM CONTROL
This is a stereo level control for the studio monitor.
This circuit monitors the left/right SOLO buses.
3. MONO FADER
This 100-mm faders adjust the final level of the combined signals
from solo buses, and send them to the MONO output jacks .
Rated output (Nominal) level is achieved with the fader set at “0”
on the scale.
8 BUS MIXING CONSOLE
16

LA
SA
LASA
SA
SA
SOLO CONTROL
LED METER (MONITOR R)
LED METER (MONITOR L)
EXTERNAL
AUX 6 AUX 8
MONITOR
MIX-B
AUX 7/8
LEVEL
TO MIX
LEVEL
MIX - B
L
+4dB
MIX - B (L OUT) MIX - B (R OUT)
MIX - B
R
+4dB
HEADPHONES
100mW
TIP - LEFT
RING - RIGHT
STUDIO
OUTPUT
L
+4dB
STUDIO
OUTPUT
R
+4dB
CONTROL ROOM
OUTPUT
R
+4dB
CONTROL ROOM
OUTPUT
L
+4dB
GROUP 1
GROUP 2
GROUP 3
GROUP 4
MIX L
MIX R
AUX 1
AUX 2
AUX 3
AUX 5
AUX 4
AUX 7
AUX 6
PFL CTRL
SOLO L
SOLO R
MIX-B L
MIX-B R
AUX 8
EXTERNAL
2-TRACK
MIX-B
MAIN MIX
AUX 5 AUX 7
AUX 5/6
GROUP 5
GROUP 6
GROUP 7
GROUP 8
8 BUS MIXING CONSOLE
17

1
2
4
3
6
5
7
（1/4＂ Phone 3 Section Connector）
（1/4＂ hone 2 Section Connector）P
(O)
(X)
8. TALKBACK/HEADPHONE SECTION
1. TALKBACK MICROPHONE INPUT CONNECTOR
This input connector is used to input microphone signals for announce-
ments from the mixer operator. The nominal input signal level is -50dB
and is designed for dynamic microphones. Please note that this input
has no phantom power connection and will not operate condenser
microphones that require it.
2. ASSIGN SWITCHES (AUX 1~8,GROUP 1~8,MIX)
These switches select the buses routing of the signal from the talkback
microphone .
These switches will stay engaged once the buttons are pushed , so it is
necessary to disengage them if a different signal routing is required.
3. ON/OFF SWITCH
When this switch is on, the signal of the TALKBACK will be sent to
AUX 1~8,GROUP 1~8,and the MIX L/R buses.
4. LEVEL CONTROL
This control adjusts the signal level of the TALKBACK input.
5. HEADPHONES OUTPUT JACK (1/4″TRS STEREO
JACK)
These jacks ( tip=left , ring=right , sleeve=GND ) may be connected to
external power amplifiers for headphone distribution , or you can plug
our phones directly into the jack. Use only stereo headphones!
When a mono connector is plugged into the stereo connects both sides
of the headphone amplifier to a single load. In any professional audio
system , accidents can happen and any will have built in protection
circuits to assure that momentary problems will not cause failure. How-
ever, this circuit will fail in 2-3 minutes if this caution is not observed.
8 BUS MIXING CONSOLE
18

TALK BACK
-50dB +15V GR 1
GR 2
GR 3
GR 4
GR 6
GR 5
GR 7
AUX1
GR 8
AUX 7
AUX 2
AUX 3
AUX 4
AUX 5
AUX 6
AUX 8
ST L
ST R
MIX-B R
MIX-B L
GROUP 1 GROUP 2 GROUP 3 GROUP 4 MIX L MIX R
AUX 1
AUX 2 AUX 3 AUX 5 AUX 4 AUX 7 AUX 6 PFL CTRL SOLO L SOLO R MIX-B L MIX-B R AUX 8
2
3
1
+
2
3
1
HA
6. PHONES GAIN
The PHONE GAIN control sets the level at the HEADPHONE jack.
7. HEADPHONE MONITOR SELETOR
This contains a stereo level control for the headphones outputs ,a stereo SOLO switch, six push buttons to select from
the following signal source: MONITOR, MIX-B, AUX SENDS 3＆4, AUX SENDS 5＆6, AUX SENDS 7＆8, and
EXTERNAL.
You can select any combination of source.
The AUX SENDS 3 ＆ 4, 5 ＆ 6 and AUX SENDS 7 ＆ 8 switches are connected directly from the outputs of their
respective circuits.
GROUP 5 GROUP 6 GROUP 7 GROUP 8
8 BUS MIXING CONSOLE
19
ON