Gemini BPM-1000 User manual

Page 1
SERVICE MANUAL
BPM-1000
Stereo Preamp Mixer
CONTENT’S:
Connections & Operations:.......................................................Page 2-5
Specifications:..............................................................................Page 5
Parts Lists:.................................................................................Page 5-7
PCBs:........................................................................................Page 8-12
Schematics.............................................................................Page 13-14
Gemini Sound Products Corp.
120 Clover Place P.O. Box 6928
Edison, NJ 08818-6928
732-738-9003 (Phone) • 732-738-9006 (Fax)

Page 2
11
20 20 20
20
14
15
16
17
14
15
16
17
14
15
16
17
14
15
16
17
13
27
41
26
24
22
4
5
6
7
10
42
40
28 31
12
3
29
34
32
35
8
39
1
2
37
19
33
30
9
18 21 23 25
3838 38 38
36

Page 3
43
44
44
LIFT
59
45
45
46
46
47
47
48
48
49
49
50
50
51
51
52
52
53
53
54
55
56 56
57 58

Page 4
Connections
1. Before plugging in the power cord, make sure that the VOLTAGE SELECTOR
(43) switch is set to the correct voltage.
NONO
NONO
NOTETE
TETE
TE: This product is double insulated and not intended to be
grounded.
2. Make sure that the POWER (1) switch is in the off position. The POWER LED (2)
will be off.
3. The BPM-1000 is supplied with 2 sets of amp output jacks. The BALANCED
OUTPUT AMP (56) jacks are used to connect to your main amplifier using
standard XLR cables. We recommend using the balanced amp outputs if the
cables to your amp are 25 feet or more. Balanced outputs have three separate
conductors, two of which are signal (positive and negative) and one shield
(ground). Pin 1 is ground (shield). Pin 2 is signal hot (positive). Pin 3 is signal
cold (negative). The OUTPUT AMP (44) jacks are unbalanced and used to
connect to your main amplifier. The OUTPUT BOOTH (45) jacks allow you to
hook up an additional amplifier.
4. The MIC 1 (3) input (found on the front panel) accepts a 1/4" or XLR connector.
The MIC 2 (58) input and the MIC 3 (57) input (found on the rear panel) accept
1/4" connectors. All accept balanced and unbalanced microphones.
5. On the rear panel are 1 stereo PHONO/LINE (53) input, 2 stereo PHONO (49,
51) inputs, and 5 stereo LINE (46, 47, 48, 50, 52) inputs. The PHONO/LINE
SWITCH (55) enables you to set the (53) input to Phono or Line. The phono
inputs will accept only turntables with a magnetic cartridge. A GROUND SCREW
(54) for you to ground your turntables is located on the rear panel. The stereo line
inputs will accept any line level input such as a CD player, a cassette player, etc.
6. Headphones can be plugged into the front panel mounted HEADPHONE (13)
jack.
Using the Ground Lift Switch
Depending on your system configuration, sometimes applying the ground will create
a quieter signal path. Sometimes lifting the ground can eliminate ground loops and
hum to create a quieter signal path.
1. With the mixer on, listen to the system in idle mode (no signal present) with the
ground applied (the GROUND LIFT SWITCH (59) in the bottom position).
2. Then turn the power off before moving the GROUND LIFT SWITCH (59). Lift
the ground by moving the GROUND LIFT SWITCH to the top position, turn the
power back on and listen to determine which position will provide a signal devoid
of background noise and hum. Keep the GROUND LIFT SWITCH in the ground
position if the noise level remains the same in either position.
CAUTION: DO NOT TERMINATE THE AC GROUND ON THE POWER MIXER IN
ANY WAY. TERMINATION OF THE AC GROUND CAN BE HAZARDOUS.
Operation
1. POWER ON: Once you have made all the equipment connections to your mixer,
press the POWER SWITCH (1). The power will turn on and the POWER LED (2)
will glow.
2. CHANNEL 1: The GAIN (14), HIGH (15), MID (16),and LOW (17) controls allow
you to fully adjust the selected source. Switch # (18) allows you to select the
PHONO 1/LINE 1 (53) or the LINE 2 (52) input. The CHANNEL SLIDE (19)
controls the input level of this channel.
3. CHANNEL 2: The GAIN (14), HIGH (15), MID (16),and LOW (17) controls allow
you to fully adjust the selected source. Switch # (21) allows you to select the
PHONO 2 (51) or the LINE 3 (50) input. The CHANNEL SLIDE (22) controls the
input level of this channel.
4. CHANNEL 3: The GAIN (14), HIGH (15), MID (16),and LOW (17) controls allow
you to fully adjust the selected source. Switch # (23) allows you to select the
PHONO 3 (49) or the LINE 4 (48) input. The CHANNEL SLIDE (24) controls the
input level of this channel.
5. CHANNEL 4: The GAIN (14), HIGH (15), MID (16),and LOW (17) controls allow
you to fully adjust the selected source. Switch # (25) allows you to select the
LINE 5 (47), LINE 6 (46) or the MIC 3 (57) input. The CHANNEL SLIDE (26)
controls the input level of this channel.
NONO
NONO
NOTETE
TETE
TE: There is Low, Mid and High equalization for each channel
with an extremely wide range of adjustment providing a smoother
mix.
SUGGESTION: You can use the Cut Features on each channel to remove Low,
Mid and/or High to create special effects.
6. CROSSFADER SECTION: The CROSSFADER (27) allows the mixing of one
source into another. The BPM-1000 features an assignable crossfader. The
ASSIGN (28, 31) switches allow you to select which channel will play through
each side of the crossfader. The ASSIGN (28) switch has 4 settings (1, 2, 3 or 4)
and allows you to select channel 1, 2, 3 or 4 to play through the left side of the
crossfader. The ASSIGN (31) switch has 4 settings (1, 2, 3 or 4) and allows you to
select channel 1, 2, 3 or 4 to play through the right side of the crossfader. There
are two OFF (29, 32) buttons for the crossfader. When the OFF (29) button is
pressed, the left side of the crossfader will be inactive and the OFF LED (30) will
light. When the OFF (32) button is pressed, the right side of the crossfader will be
inactive and the OFF LED (33) will light. Using the OFF button, be sure to
deactivate the crossfader before changing the ASSIGN setting. This will avoid any
click or popping sound in your signal while you are changing the assign setting.
The CROSSFADER (27) in your unit is removable and if the need arises can be
easily replaced. Crossfader units are available in three varieties. Part # RF-45
(which is identical to the crossfader supplied with the mixer) has a 45 mm travel
from side to side. Part # RF-30 is available with a 30 mm travel distance. Also
available is the PSF-45 with a special curve designed for scratch mixing. Just
purchase one of these crossfader units from your Gemini dealer and follow these
instructions:
1. Unscrew the outside FADER PLATE SCREWS (B). Do not touch
the INSIDE SCREWS (C).
2. Carefully lift the fader and unplug the CABLE (D).
3. Plug the new fader into the cable and place it back in the mixer.
4. Screw the fader to the mixer.
7. BPM DISPLAY: There are BPM DISPLAYS (34, 35) for the two channels
assigned to each side of the CROSSFADER (27). They update approximately
every beat and digitally display the Beats Per Minute allowing you to match the
beats visually. BPM DISPLAY (34) reflects the Beats Per Minute of the channel
assigned to the left side of the CROSSFADER, and BPM DISPLAY (35) reflects
the Beats Per Minute of the channel assigned to the right side of the
CROSSFADER.
NONO
NONO
NOTETE
TETE
TE: A [- -] reading will appear on the BPM DISPLAY if the track
has unclear beats. The [- -] reading will also appear if there is no
signal present.
8. The BEAT OFFSET INDICATORS (36) light when the tracks of the two channels
assigned to the crossfader are within 11 BPMs of each other and display how
aligned the beats of the two channels are. When the RED LEDs light, the beats
are not aligned. When the YELLOW LEDs light, the beats are almost aligned.
When the GREEN LED lights, the beats are aligned perfectly.
NONO
NONO
NOTETE
TETE
TE: If the diffence between the two channel’s beats exceed 11
BPM, the BEAT OFFSET INDICATORS will not light.
SUGGESTION: You can use the BPM DISPLAYS to determine which tracks
have similar or the same Beats Per Minute. When mixing two tracks with
similar Beats Per Minute, you can use one source’s pitch control to align the
Beats Per Minute with the other source’s BPM. The BPM DISPLAYS and the
BEAT OFFSET INDICATORS update every beat and will reflect the change in
BPM and indicate when the beats are aligned.
NONO
NONO
NOTETE
TETE
TE: Beat mixing is a skill that requires practice. Not every track
has a strong beat, and beat mixing works best with tracks with
clear and strong beats.
9. OUTPUT CONTROL SECTION: The level of the AMP OUT (44, 56) is controlled
by the MASTER (41) slide and the BALANCE CONTROL (40). The BOOTH (42)
control adjusts the level of the BOOTH OUTPUT (45). HINT: The booth OUTPUT
is used by some DJs to run monitor speakers in their DJ booth. You can also use
it as a second ZONE or AMP output. Activating the MONO (39) button (the mono
LED will light) makes the master output mono.
10. TALKOVER SECTION: The purpose of the talkover section is to allow the
program playing to be muted so that the mic can be heard above the music. The
MIC/TALKOVER (9) switch controls MIC 1 and MIC 2 and has three settings.
When the MIC/TALKOVER (9) switch is in the left position, MIC 1 and MIC 2 and
talkover are off. When the MIC/TALKOVER (9) switch is in the center position

Page 5
MIC 1 and MIC 2 are on, the MIC INDICATOR (8) will glow, but talkover is off.
When the MIC/TALKOVER (9) switch is in the right position, MIC 1 and MIC 2
and talkover will be on and the volume of all sources except the Mic inputs are
lowered by 16 dB. The TREBLE (4) and BASS (5) controls allow you to fully
adjust the tone of MIC 1 and MIC 2. MIC 1 LEVEL (7) controls the level of MIC 1.
The MIC 2 LEVEL (6) controls the level of MIC 2.
11. CUE SECTION: By connecting a set of headphones to the HEADPHONE (13)
jack, you can monitor any or all of the channels. Press the CUE ASSIGN (20)
buttons for channels 1 - 4 to select the channel or channels to be monitored and
their respective LED indicators will glow. Use the CUE LEVEL (10) control to
adjust the cue volume without effecting the overall mix. By rotating the CUE PGM
PAN (12) control to the left you will be able to monitor the assigned cue signal.
Rotating to the right will monitor the PGM (program) output. Use the CUE SPLIT
(11) button to split the signals from cue and program so that cue will be heard in
one earphone and program will be heard in the other earphone.
12. DISPLAYS: The PEAK HOLD LED METER (37) indicates the MASTER
OUTPUT (44, 56) left and right channel levels. The individual channels each
have their own PREFADER INPUT LEVEL PEAK HOLD LED METERS (38)
which reflect the GAIN (14), HIGH (15), MID (16),and LOW (17) rotary control
adjustments. The CHANNNEL SLIDES (19, 22, 24, 26) will not effect the
PREFADER INPUT LEVEL PEAK HOLD LED METERS (38).
Specifications
INPUTS:
Phono...............................................................................................3mV 47Kohm
Line.............................................................................................150 mV 27Kohm
OUTPUTS:
Amp/Booth............................................................................0 dB 1V 400ohm
Max..............................20V Peak to Peak
Rec.................................................................................................225mV 5Kohm
MIC 1 & MIC 2:
DJ Mic..........................................................................1.5mV 2Kohm balanced
Bass............................................................................................................± 12dB
High.............................................................................................................± 12dB
MIC 3:
DJ Mic..........................................................................1.5mV 2Kohm balanced
Controls.................................................................................................Channel 4
GENERAL:
Bass (Chnls 1-4).............................................................................+ 12dB/- 26 dB
Mid (Chnls 1-4)................................................................................+ 12dB/- 26 dB
Treble (Chnls 1-4)...........................................................................+ 12dB/- 26 dB
Gain (Chnls 1-4)....................................................................................0 to -20dB
Frequency Response..........................................................20Hz - 20KHz +/- 2dB
Distortion......................................................................................................0.02%
S/N Ratio.....................................................................................better than 80dB
Talkover Attenuation.........................................................................-16dB
Headphone Impedance.........................................................................16ohm
Power Source.............................................115/230V 50/60Hz 10W
Dimensions.................................................................12.5”w x 3”h x 14”d
Weight..............................................................................................10 lbs
Description Part #
Cabinet Parts and Packing
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
Item #
Parts Lists
002-196
021-759A
021-972A
021-388A
022-360
023-674
002-531
002-532
002-713
148-238
148-236
148-239
003-122
003-131
003-970
003-705
003-706
003-707
003-708
003-372
003-711
003-969
022-305
049-206
146-710
046-022
046-023
046-024
047-468
159-205
159-216
003-510
003-612
102-025
102-007
111-046A
110-176A
111-044A
107-015
111-043A
111-049A
131-081
111-051A
121-003A
PANEL CONTROL
BRACKET VR
PANEL REAR
COVER BOTTOM
HOLDER X-FADER
KNOB SWING (LONG)
KNOB PUSH (SMALL)
KNOB BUSHING (SMALL)
KNOB SLIDE (BIG)
KNOB INLAY (RED); GAIN
KNOB INLAY (BLACK); BALANCE,CUE LEVEL,
XF ASSIGN, MIC, BOOTH
KNOB INLAY (GRAY);
LOW, MID, HIGH, TREBLE, BASS
KNOB ROTARY (A)
KNOB ROTARY (B)
VR INLAY
COVER LED (M)
HOLDER LED (M)
COVER LED
HOLDER LED
PLATE DISPLAY (SMALL)
HOLDER LED 3f (7mm)
HOLDER LED 3f (17mm)
PROTECTOR PLATE FOR 115/230V SWITCH
PAD FOOT
GND SCREW
SCREEN (1)
SCREEN (2)
SCREEN
PCB SUPPORT
VR DUST PROOF CLOTH
SWING DUST PROOF CLOTH;
(30mm×30mm,4f,T=0.3mm);88.1.5
EVA PAD
SNAP RIVET
PAN-HEAD MACHINE SCREW; PMS 2.6X4(B)
PAN-HEAD MACHINE SCREW; PMS 2X4(B)
BAND-HEAD TAPPING SCREW; BTS-3 3X6(AB)
PAN-HEAD TAPPING SCREW/TWIN SCREW;
PTS-2 3X6(AB) TWIN
BAND-HEAD TAPPING SCREW; BTS-3 3X10(AB)
BAND-HEAD MACHINE SCREW; BMS 3X2X4
FLAT-HEAD TAPPING SCREW; FTS-3 3X6(AB)
FLAT-HEAD TAPPING SCREW; FTS-3 3X12(AB)
NUT/WASHER
BAND-HEAD TAPPING SCREW; BTS-3 3X5(AB)
BAND-HEAD TAPPING SCREW/TW-E;
BTB-3/TW-3 3X6(AB)
162-917
162-981
162-982
162-983
162-984
162-985
162-923
162-979
162-980
PRINTED CIRCUIT BOARD CDM1000-1;
IN/OUT (94V0 76×170mm)
PRINTED CIRCUIT BOARD BPM1000-2; MAIN
(94V0 275×330mm) REV,A
PRINTED CIRCUIT BOARD 1500-3; MIC1 PCB
PRINTED CIRCUIT BOARD 1500-4; FADER
PRINTED CIRCUIT BOARD BPM1000-5;
MIC 2,3 I/P PCB (94V0 74×153mm)
PRINTED CIRCUIT BOARD 1500-6;
PHONE PCB
PRINTED CIRCUIT BOARD CDM1000-7;
LED PCB (94V0 123×221mm)
PRINTED CIRCUIT BOARD BPM250-7
PRINTED CIRCUIT BOARD BPM250-8;
BIT DISPLAY (CEM-1 41×166mm)
Description Part #
Printed Circuit Boards
Item #
1
2
3
4
5
6
7
8
9

Page 6
Parts Lists - PCB1 Input/Output
079-003
081-027
161-105
SILICON DIODE 1N4148
SLIDE SWITCH LINE/PHONO SSSF122NA1-CE
4P RCA JACK P=14mm
D1, D2
SW1
J1-5
Designators Description Part #
Electrical Parts
Item #
1
2
3
076-104
076-095
TRANSISTOR 2SA1048 (2SA1317)
TRANSISTOR 2SC2878
Q1
Q2-5
Designators Description Part #
Transistors
Item #
1
2
074-104
074-145
INTEGRATED CIRCUIT NJM4558L
INTEGRATED CIRCUIT NJM2068LD
IC4, IC5
IC1, IC2, IC3
Designators Description Part #
ICs
Item #
1
2
Parts Lists - PCB2 Meter
079-003
080-079
080-080
080-078
SILICON DIODE 1N4148
LIGHT EMITTING DIODE (GREEN); 2.5x6.5 mm
LIGHT EMITTING DIODE (YELLOW); 2.5x6.5 mm
LIGHT EMITTING DIODE (RED); 2.5x6.5 mm
D25-28
D1-7, D13-19,
D29-35, D41-47,
D53-60, D66-73
D8-9, D20-21,
D36-37, D48-49,
D61-62, D74-75
D10-12, D22-24,
D38-40, D50-52,
D63-65, D76-78
Designators Description Part #
Electrical Parts
Item #
1
2
3
4
076-104TRANSISTOR 2SA1048 (2SA1317)T1-12
Designators Description Part #
Transistors
Item #
1
074-040
074-148
INTEGRATED CIRCUIT HCF4066BE
INTEGRATED CIRCUIT BA6822S
IC2, IC3
IC1, IC4, IC5
Designators Description Part #
ICs
Item #
1
2

Page 7
Parts Lists - PCB4 Main
082-019
082-022
083-069
083-081
092-090
080-091
072-101
071-119
071-120
071-122
071-170
071-115
071-165
071-166
071-171
071-167
LEVER SWITCH 4P2C
LEVER SWITCH 4P3C
PUSH SWITCH 2P2C L=12.5
PUSH SWITCH 4P2C L=12.5
PHONE JACK 6.3f+ XLR
LED (RED) 3.15f
SLIDE VR 60mm L=20 10KA×2 CH VOL MASTER
ROTARY VR L=20 50KA×2 CUE LEVEL
ROTARY VR L=20 20KMN×2 C.C BALANCE
ROTARY VR L=20 10KA×2 BOOTH
ROTARY VR L=20 20KW×2 CUE, PGM
ROTARY VR L=22.5 10KB MIC1, MIC2
ROTARY VR L=22.5 10KB C.C HIGH, BASS
ROTARY VR L=22.5 50KA×2 CH1 3-GAIN
ROTARY VR L=22.5 50KW×2 CH4-GAIN
ROTARY VR L=22.5 50KE×2 C.C HI, MID, LOW
S3, S4, S5
S6, SW1
SW3-4, SW6,
SW8
S1, S2, S7
J1
D1-9
VR11, VR16,
VR21, VR26,
VR27
VR6
VR28
VR29
VR1
VR4, VR5
VR2, VR3
VR7, VR12, VR17
VR22
VR8-10, VR13-15,
VR18-20,
VR23-25
Designators Description Part #
Electrical Parts
Item #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
074-063
074-113
INTEGRATED CIRCUIT LA6458S
INTEGRATED CIRCUIT NJM4556L
IC2-13
IC1
Designators Description Part #
ICs
Item #
1
2
Parts Lists - PCB3 XLR
076-095TRANSISTOR 2SC2878Q1, Q2
Designators Description Part #
Transistors
Item #
1
074-104
074-145
074-107
074-114
INTEGRATED CIRCUIT NJM4558L
INTEGRATED CIRCUIT NJM2068LD
INTEGRATED CIRCUIT NJM7812FA
INTEGRATED CIRCUIT NJM7912FA
IC3
IC1, IC2
IC5
IC4
Designators Description Part #
ICs
Item #
1
2
3
4
079-027
092-078
092-118
RECTIFIER DIODE 1N4002
PHONE JACK 6.3f
PHONE JACK XLR
D1-8
J5
X8, X12
Designators Description Part #
Electrical Parts
Item #
1
2
3

Page 8
PCB2 - Meter

PCB1 - Input/Output
Page 7

Page 9
PCB3 - XLR

+12V
X16
+12V
-12V
MN
J2A
R26
1K C22
101
R22
47K
R20
180
R24
8K2
R25
100K
R19
10K
R28
33
R27
33
C32
47/16
C26
47/16
2
31
48
IC2A
2068
+12V
-12V
C20
822
C21
273
C19
10/16
C24
100/16
R21
1K C23
101
R23
47K
R34
180
R32
8K2
R31
100K R30
10K
6
57
IC2B
2068
C31
822
C30
273
C29
10/16
C25
100/16
J2B
R36
1K
R29
1K
C34
101
C28
101
C33
4.7/35
C27
4.7/35
R35
9K1
R33
9K1
X2
J3A
R44
1K C38
101
R42
47K
R38
180
R39
8K2
R40
100K
R37
10K
R46
33
R45
33
C47
47/16
C42
47/16
2
31
48
IC3A
2068
+12V
-12V
C36
822
C37
273
C35
10/16
C40
100/16
R41
1K C39
101
R43
47K
R52
180
R51
8K2
R50
100K
R48
10K
6
57
IC3B
2068
C46
822
C45
273
C48
10/16
C41
100/16
J3B
R54
1K
R47
1K
C50
101
C44
101
C49
4.7/35
C43
4.7/35
R53
9K1
R49
9K1
X3
J4A
J4B
R59
2K2
R56
2K2
R67
2K2
R64
2K2
C56
101
C57
101
C64
101
C60
101
C55
4.7/35
C63
4.7/35
C51
4.7/35
C62
4.7/35
R61
15K
R60
15K
R71
15K
R65
15K
X6
J5A
R73
47
R78
47
R74
47K
R77
47K
C68
47/16
C70
47/16
Q3
2SC2878
Q2
2SC2878
2
31
48
IC4A
4558L
6
57
IC4B
4558L
R58
33
R57
33
C54
47/16
C53
47/16
R62
130K
R68
130K
R69
20K
R63
20K
C66
4.7/16
C59
4.7/16
J5B
R82
47
R89
47
R84
47K
R88
47K
C73
47/16
C74
47/16
B
C E
Q5
2SC2878
Q4
2SC2878
C76
4.7/16
C72
4.7/16
R70
4K7
R72
4K7
R85
4K7
R86
4K7
R55
680K
C61
220/16
D1
1N4148
C52
4.7/35
D2
1N4148
+12V
R79
330
R66
330
R91
330
R83
330
2
31
48
IC5A
4558L
6
57
IC5B
4558L
R76
33
R75
33
C67
47/16
C69
47/16
+12V
-12V
R80
130K
R90
130K
R87
16K
R81
16K
C71
22
C75
22
C58
22
C65
22
X8
X7
X5
X9
X10
-12V
+12V
E C
B
Q1
2SA1317
X4
-12V
+12V
X6
VR18A
100KBx2
VR18B
100KBx2
TO X1 BPM PCB
TO X1 METER
TO X2 METER
TO X3 METER
TO X4 METER
T
R
SJ6
X26
+
2G1
-3
X8
+
2G1
-3
X12
R34
47
R29
47
R33
47K
R31
47K
C25 47/16
C26 47/16
Q2
2SC2878
B
C E
Q1
2SC2878
2
31
48
IC3A
4558L
6
57
IC3B
4558L
R24
33
R22
33
C21
47/16
C22
47/16
+12V
R25
3K6
R28
3K6
R23
3K6
R21
3K6
R26
4K7
R27
4K7
R32
330
R30
330
C24
101
C23
101
-12V
X5
X11
TO X8 TP
D3
1N4002
D2
1N4002
D1
1N4002
D4
1N4002 C31
1000/25
C30
1000/25
C33
103
C34
103
C28
1/16
C27
1/16
+12V
Vin
1
GND
2
+12V 3
IC5
7812
Vin
2
GND 1
-12V 3
IC4
7912
X7
X6
-12V
X13
X4
TO X1 MN
T1
SW5
115/230
FU1
0.5A
SW6
C88
103
X16
C14
22/16
C15
22/16
C17
22/16
R11
1K 1%
R12
1K 1%
R15
5K1 1%
R13
5K1 1%
C18
101
C16
101
2
31
48
IC2A
2068
X3
R19
33
R20
33
C19
47/16
C20
47/16
+12V
-12V
R18
1K
R17
1K
T
R
S
J2
C12
22/16 R14
5K6
R16
5K6
C11
22/16
C8
22/16
C13
22/16
R6
1K 1%
R7
1K 1%
R5
30K1 1%
R9
30K1 1%
C7
101
C10
101
2
31
48
IC1A
2068
R10
33
R3
33
C6
47/16
C3
47/16
+12V
-12V
C1
22/16
C9
22/16
C4
22/16
R1
1K 1%
R8
1K 1%
R4
30K1 1%
R2
30K1 1%
C5
101
C2
101
6
57
IC1B
2068
X1
X2
T
R
S
J1
1
3
2
T
R
S
X32 X25
-
+
GND
Left
Left
Left
LeftLeft
Left
Left
Left
TO X9 TP
TO X5 BTM
Left
TO X11 BTM
Left
TO X5 MTR
+HOT
+HOT
S3
S4
S5
C106
22/16
R198
33
C120
22/16
C132
22/16
-12V
C74
22/16
3
42
59
IC8A
4558S
R22
20K
R120
15K
R122
33
R135
33
C77
22/16
C89
22/16
+12V
-12V
C82
22/16
7
68
IC8B
4558S
R138
15K
R34
20K
R126
15K
R129
15K
C128
22/16
C129
22/16
3
42
59
IC11A
4558S
7
68
IC11B
4558S
R181
33
R186
33
C102
22/16
C111
22/16
+12V
-12V
R176
330K 1%
VR29A
10KAx2
VR29B
10KAx2
VR11B
10KAx2
VR11A
10KAx2
R68
7K5
R78
7K5
1 2
R47
7K5
1 2
R56
7K5
D4
LED
R58
3K9
+12V
R40
120K
R39
30K
R77
120K
R76
30K
VR16B
10KAx2
VR16A
10KAx2
R110
7K5
R116
7K5
R92
7K5
R96
7K5
D5
LED
R100
3K9
+12V
R82
120K
R81
30K
R119
120K
R118
30K
VR21B
10KAx2
VR21A
10KAx2
R160
7K5
R165
7K5
R139
7K5
R144
7K5
D6
LED
R145
3K9
+12V
R125
120K
R124
30K
R164
120K
R166
30K
C107
22/16
C133
22/16
VR26B
10KAx2
VR26A
10KAx2
R208
7K5
R219
7K5
R192
7K5
R195
7K5
D7
LED
R196
3K9
+12V
R173
120K
R172
30K
R222
120K
R225
30K
3
42
59
IC1A
4556S
7
68
IC1B
4556S
R5
10
R3
10
C13
470/16
C3
470/16
+12V PHONE
-12V PHONE
R1
13K
R4
13K
C11
22
C2
22
R12
180
R9
180
C10
47/16
C12
47/16
R11
100K
R8
100K
VR6A
50KAx2
VR6B
50KAx2
C1
1/16
C8
1/16
R36
20K
R30
20K
R24
20K
R23
20K
R18
10K
R25
10K
R216
10K
VR1A
20KBx2
VR1B
20KBx2
3
42
59
IC3A
4558S
7
68
IC3B
4558S
R27
33
R35
33
C25
22/16
C28
22/16
R33
150K
R41
150K
C21
22
C27
22
C24
22/16
C31
22/16
C23
4.7/16
C26
4.7/16
X2
SW1A
SW1C
SW1B
R215
15K
R220
15K
R10
47
R2
47
C9472
C4472 GRDPHONE
X1
R17
3K9
D2
LED
C78
22/16
R147
33
C90
22/16
C99
22/16
-12V
C76
22/16
C100
22/16
C52
22/16
R98
33
C62
22/16
C70
22/16
-12V
C54
22/16
C72
22/16
C29
22/16
R59
33
C40
22/16
C48
22/16
-12V
R52
1K5
R50
1K5
VR9A
50KEx2
VR10A
50KEx2
VR8A
50KEx2
C34
154
C36
562
C38
154
C37
103
7
68
IC5B
4558S
R46
8K2
C30
22/16
C51
22/16
C33
682
R45
24K
C35
56
R49
33K
R48
4K7
SW3
SW4
SW5
SW6
R32
15K
R31
15K
C103
104 5%
C104
104 5%
C105
104 5%
C110
104 5%
C116
104 5%
C117
104 5%
R167
18K 1%
R191
18K 1%
R174
47K 1%
R180
330K 1%
R171
47K 1%
C75
22
C88
22
R60
33
R43
1K5
R71
33
C41
22/16
C42
22/16
3
42
59
IC4A
4558S
VR7A
50KAx2
C32
22
+12V
-12V
R70
1K5
7
68
IC4B
4558S
VR7B 50KAx2
C45
22
R42
20K
R69
20K
R101
33
R84
1K5
R113
33
C63
22/16
C64
22/16
3
42
59
IC6A
4558S
VR12A
50KAx2
C55
22
+12V
-12V
R112
1K5
7
68
IC6B
4558S
VR12B
50KAx2
C67
22
R83
20K
R111
20K
R148
33
R131
1K5
R157
33
C91
22/16
C92
22/16
3
42
59
IC9A
4558S
VR17A
50KAx2
C80
22
+12V
-12V
R156
1K5
7
68
IC9B
4558S
VR17B
50KAx2
C96
22
R130
20K
R155
20K
R199
33
R170
5K6
R210
33
C121
22/16
C122
22/16
3
42
59
IC12A
4558S
VR22A
50KBx2
C108
22
+12V
-12V
R209
5K6
7
68
IC12B
4558S
VR22B
50KBx2
C123
22
R175
33K
R187
33K
SW1D
X6
X12
X18
R214
10K
R51
33K
R55
33K
R57
5K6
R44
2K4
R53
3K6
R62
1K5
R74
1K5
VR9B
50KEx2
VR10B
50KEx2
VR8B
50KEx2
C50
154
C44
562
C47
154
C46
103
3
42
59
IC5A
4558S
R64
8K2 C49
682
R75
24K
C43
56
R63
33K
R72
4K7
R65
33K
R67
33K
R61
5K6
R73
2K4
R66
3K6
R94
1K5
R89
1K5
VR14A
50KEx2
VR15A
50KEx2
VR13A
50KEx2
C56
154
C59
562
C61
154
C60
103
7
68
IC7B
4558S
R88
8K2 C53
682
R87
24K
C58
56
R90
33K
R85
4K7
R93
33K
R95
33K
R99
5K6
R86
2K4
R91
3K6
R103
1K5
R115
1K5
VR14B
50KEx2
VR15B
50KEx2
VR13B
50KEx2
C73
154
C66
562
C69
154
C68
103
3
42
59
IC7A
4558S
R106
8K2 C71
682
R117
24K
C65
56
R104
33K
R114
4K7
R107
33K
R109
33K
R102
5K6
R105
2K4
R108
3K6
R142
1K5
R134
1K5
VR19A
50KEx2
VR20A
50KEx2
VR18A
50KEx2
C81
154
C85
562
C87
154
C86
103
7
68
IC10B
4558S
R128
8K2 C79
682
R127
24K
C84
56
R136
33K
R132
4K7
R141
33K
R143
33K
R146
5K6
R133
2K4
R137
3K6
R152
1K5
R163
1K5
VR19B
50KEx2
VR20B
50KEx2
VR18B
50KEx2
C101
154
C94
562
C95
154
C98
103
3
42
59
IC10A
4558S
R150
8K2 C97
682
R162
24K
C93
56
R158
33K
R161
4K7
R151
33K
R154
33K
R149
5K6
R159
2K4
R153
3K6
R189
1K5
R185
1K5
VR24A
50KEx2
VR25A
50KEx2
VR23A
50KEx2
C115
154
C113
562
C119
154
C114
103
7
68
IC13B
4558S
R179
8K2 C109
682
R178
24K
C112
56
R184
33K
R183
4K7
R188
33K
R194
33K
R197
5K6
R177
2K4
R190
3K6
R205
1K5
R213
1K5
VR24B
50KEx2
VR25B
50KEx2
VR23B
50KEx2
C131
154
C125
562
C127
154
C126
103
3
42
59
IC13A
4558S
R203
8K2 C130
682
R218
24K
C124
56
R211
33K
R217
4K7
R204
33K
R207
33K
R200
5K6
R212
2K4
R206
3K6
R193
33
C118
22/16
+12V
R140
33
C83
22/16
+12V
R54
33
C39
22/16
+12V
R97
33
C57
22/16
+12V
D1
LED
R16
3K9
-12V
C7
10/16
C22
47/16
C20
47/16
R28
1K3
R19
1K
R20
3K9
R13
1K3
C17
224
C16
224
C14
223
C18
223
3
42
59
IC2A
2068S
VR4
10KB
VR3
10KB
VR2
10KB
VR5
10KB
R29
1K
R21
1K
R6
33
C5
47/16
R7
33
C6
47/16
-12V C19
681
R14
1K8
C15
221
7
68
IC2B
2068S R15
51K
X5
X8
X11
X15
X14
R182
1M
R202
1M
S6A
R26
100K
R201 100K
S6B
S6D
S6C
X4
X7
X10
X13
GRD PHONE
GRD PHONE
S1
R38
20K
R79
20K
R80
20K
R121
20K
R123
20K
R168
20K
R169
20K
R221
20K
S2
S7
-12V
D3
LED
D8
LED
R37
3K9
R226
3K9
CROSSFADER OFF
CROSSFADER OFF
SW7C
SW7A
SW7B
SW2C
SW2A
SW2B
X9
VR27A
10KAx2
VR27B
10KAx2
R
VR28A
20KMNx2
L
VR28B
20KMNx2
R227
3K9
D9
LED
-12V
X17
SW8
R223
1K
R224
1K
X3
C135
22/16
C134
22/16
LEFT
RIGHT
LEFT
RIGHT
R92
1K
1L
1R
1G
J1A
R1
1KC4
101
R3
47K
R5
180
R7
8K2
R8
100K
R4
10K
R17
33
R9
33
C18
47/16
C12
47/16
2
31
48
IC1A
2068
+12V
-12V
C7
822
C8
273
C2
10/16
C6
100/16
R2
1K C5
101
R6
47K
R16
180
R15
8K2
R14
100K R12
10K
6
57
IC1B
2068
C17
822
C13
273
C16
10/16
C11
100/16
C3
4.7/35
C1
4.7/35
2L
2R
2G
J1B
R18
1K
R10
1K
C15
101
C10
101
C14
4.7/35
C9
4.7/35
R13
9K1
R11
9K1
X1
SW1A
SW1B
Right
Left
Right
Right
Right
Left
Left
Left
TO X2 BPM.PCB
TO X6 METER
TP
TO X6 BTM
TP
IN/OUT PCB
XLR PCB
IN/OUT PCB
XLR PCB
XLR PCB
D5
1N4002
D6
1N4002
D8
1N4002
D7
1N4002 X10
C32
1000/25 C29 1/16
X9
Vin
1
GND
2
Vout 3
IC6
7805
C1
472/400V
CHASIS GROUND
SW1
GROUND
LIFT
MAIN PCB
Page 12
Schematic

11 12
13 14 15
1 9 8 7 5
10
4 2 6 3
16 17 18 19 20 21 22
BA6820
IC5
D65 D64 D63 D62 D61 D60 D59 D58 D57 D56 D55 D54 D67
D68 D69 D70 D71 D72 D73 D74 D75 D76 D77 D78
T12 2SA1317 T11
2SA1317 T10
2SA1317 T9
2SA1317
R43 390
R42 390
R44 390
R45 390
LR
+10 +7 +4 [phone]
+5V
GND GND
+5V
C25 22/6.3
C23 22/6.3
R39 24K R40 24K
GND +5V GND
R41 39K
C24 103
GND +5V
GND
R47 68
R49 68
R50 68 R51 68 R52 180
R48 180
D66 D53
11 12
13 14 15
1 9 8 7 5
10
4 2 6 3
16 17 18 19 20 21 22
BA6820
IC1
D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D13
D14 D15 D16 D17 D18 D19 D20 D21 D22 D23 D24
T2 2SA1317 T1
2SA1317 T4
2SA1317 T3
2SA1317
R11 390
R9 390
R6 390
R5 390
CH1 CH2
+10 +7 +4 [phone]
+5V
GND GND
+5V
C5
22/6.3
C1
22/6.3
R10 24K R12 24K
GND +5V GND
R15 39K
C6 103
GND +5V
GND
R8 68
R7 68
R2 68 R3 68 R4 180
R1 180
11 12
13 14 15
1 9 8 7 5
10
4 2 6 3
16 17 18 19 20 21 22
BA6820
IC4
D40 D39 D38 D37 D36 D35 D34 D33 D32 D31 D30 D29 D41
D42 D43 D44 D45 D46 D47 D48 D49 D50 D51 D52
T6 2SA1317 T5
2SA1317 T8
2SA1317 T7
2SA1317
R32 390
R30 390
R28 390
R26 390
CH-3 CH-4
+10 +7 +4 [phone]
+5V
GND GND
+5V
C15 22/6.3
C14 22/6.3
R31 24K R35 24K
GND +5V GND
R36 39K
C19 103
GND +5V
GND
R29 68
R27 68
R23 68 R24 68 R25 180
R22 180
C26 100/6.3
C4 100/6.3
C16
100/6.3
+5V
+5V GND
+5V GND
R46 56
GND +5V
C20 1/16
C21 1/16
C2 1/16 C3
1/16
R13 5K1 R14
5K1 R17
5K1 R16
5K1 GND
R38 5K6 R37
5K6
R CH-1
LR
CH-2
L
R
MASTER
L
C7 1/16
C8 1/16
in/out A
1out/in A 2
cont A
13
in/out B
4out/in B 3
cont B 5
in/out C
8out/in C 9
cont C
6cont D 12
in/out D
11 out/in D 10
VDD 14 VSS
7
IC2 4066
D27 1N4148 D28
1N4148 D26
1N4148 D25
1N4148
C10 1/16 C9
1/16
R21 5K1 R19
5K1 R33
5K1 R34
5K1
R
CH-3
LR
CH-4
L
C18 1/16
C17 1/16
in/out A
1out/in A 2
cont A
13
in/out B
4out/in B 3
cont B 5
in/out C
8out/in C 9
cont C
6cont D 12
in/out D
11 out/in D 10
VDD 14 VSS
7
IC3 4066
X6
C12
100/6.3
R20 2M2 R18 2M2
+5V
C13 221
C11 221
GND GND
X1 X2 X3 X4
X5
C22 100/6.3
GND
GND
T13
2SC4793
R53 150
D79 5.6V C29
100/6.3
+5V
+5V
METER PCB
Page 11
Meter Schematic