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A B C D E F
NOTE: TEST POINT CONDITIONS
LINE: 120 Vrms. SPEAKER LOAD: 8 OHM RESISTANCE +250VDC +260VDC
R34
REVERB SEND LOAD: 150 OHM RESISTANCE
INPUT : 28mVrms @ 500HZ. R2 10K
100K C7 2W
VOLTAGES: ALL DC VOLTAGES MEASURED WITH 1/2W R7 C49
DIRTY 221K 10
" NO SIGNAL INPUT". 1% .001 590mV
C2 C48 C3 CHANNEL 1/2W 450V RMS
SETTINGS: GAIN & EQ @ '5' , REVERB @ '0', 1% 400V R40 42Vp-p
1.5V
LEVELS @ '10',PRESENCE & BOOST = 'OFF' RMS C6 R55 100K
1 .047
400V
.001
400V
470pF
500V
1/2W
1% 230VDC 1
.022 221K C36 R42
185VDC B C 1/2W 5.7V
R4 400V 100K RMS
1% 1/2W
1 .022 60Vp-p
475K OC1 J2:A 1%
2 4 -12.9V VTL-5C3 15Vp-p 400V
1/2W J1:B
J1:A 3 9 F2NC 1% 9-PIN R37 9-PIN 1 195VDC
28mV CW GAIN 140VDC 2 4
INPUT RMS 9-PIN 250K A 6 R44
C52 475K 3 9 F1NOT2 221K J2:B
7 5
J10 R5 1/2W 1/2W
P1 F2NC 1% 1% 9-PIN
TIP W1 1.6VDC 475K R48
8 9
R35 6
1/2W 120pF 1M 7 5 +12.9V
TIP_SW
20 G RED 1% 1KV
R1 2.2M 1.3VDC 1/2W 8 9 F1NOT2
SLEEVE 1M R3 1% 2.3VDC
1/2W 2.74K CW VOLUME
1% 1/2W C37 1M A R6 R39 R43
1% C1 R38 2.74K C5 10K 100K 1.6VDC
2.2 1M 1/2W 2.2 1/2W 1/2W
W2 50V P7 D E
1/2W 50 pF 1% 50V 1% 1%
20 G BLK 1% 500V C38 R20
E F OC2 2.74K
VTL-5C1 2.2 1/2W
50V 1%
ON INPUT JACK BOARD BREAK-OFF PC BOARD OC5
VTL-5C3
CLEAN CHANNEL
C9
+260VDC
330mV
RMS
+275VDC +315VDC
470pF R8 R14
5.5Vp-p
500V
2 CW HI C4
10K
2W
10K
2W
2
250K L VTL-5C6 R60 9-PIN
10 C8 EL84
P2 R41 R76 450V 10 J17
10K 7
450V 1/2W R59 OUTPUT
475K 221K R11
7.65V 82.5K 1% 9 TRANSFORMER 15.5V
1/2W 1/2W 1/2W 2 100 RMS
S4 1% R74 1%
RMS
3 P/N 94-754-01
TO HDR SHT 2 1% 4 5 2W J6 43.5Vp-p
PRESENCE F -12.9V 62.5Vp-p
220 SEND
TO HDR SHT 2
OC3 1/2W 215VDC C13 F1 F2
R13 I I PRE_SEND R21
33.2K C46
1/2W
ON JACK BOARD BREAK-OFF PC BOARD
J3:A .022 10K 9-PIN
1% C C ON JACK BOARD BREAK-OFF PC BOARD 1/2W
VTL-5C1 9-PIN 400V EL84
.01 1 1% J4
CW LEVEL IC2:A J19 J30
250K A 100V 2 4 F2 R17 7 R24
O O 3
R77 TO HDR SHT 2 221K
1 SEND RETURN 3 9 F1 9
P5 2 RETURN 1/2W 2 100 J33
1.5K R10 1% C15 3
R75 1M 4 5 2W +320VDC
TLO-72 1/2W R15
C -12.9V 100K J7
220 1% 1/2W 220
C10 63V F1 F2
OC4 1/2W 1% J34
R18 R22
.022 R12 C39 +10VDC
48VDC
400V 22.1K 50 pF
CW LOW 1/2W 60 R9
1K C30 500V 10W
C55 1%
1M A 470pF R161/2W 50 pF
500V R19 470
1M 1% 221K F1 F2 J5
5W
P4 500V C22 1/2W 1/2W 9-PIN
.01 1% 1% EL84
C11 100V IC1:B C21 8 9 F1 C14 R23 4 5
R80 5 3 C16
47.5K 7 7 5 F2 2 R25 J32
10K 9 100
.022 1/2W 6 6 .022 SPEAKER
3 400V CW MID
20K A
1%
NE5532
D2 D1 .1
250V
J3:B
400V 1/2W
1%
7 100
2W
450V 3
-14.7V +14.7V
1N914 1N914 9-PIN
P3
75V PIV 75V PIV
R79 C20
310mV 10 150 OHM F1 F2 J16
C54 RMS 3 J27 RESISTANCE J12 IC2:B .1 9-PIN
1 R78 R30 5 250V 8.3
LOAD
R31
220K
.047 1.6Vp-p
2
7 C31 Vrms R57 4 5 EL84
100V 1K 3 J8
10 6 65Vp-p 2 R58
IC1:A Reverb Send .1 R62 9 PIGTAIL
TLO-72 10K
NE5532 50V 10K 1/2W 100 TO SPKR
J112 210VDC 7
R29 C47 R33 1% 2W 8 OHMS
C53 D
G 10K .1
.001 A Reverb Return REVERB
R45 S
R27 R28 100V 33K CW
68.1K 1KV 100K 4.7 10K A
1/2W Q1
1% R32 P6
J11 J13 2.2K
C41 C27 REVERB C29
PAN
.0033 100
100V 35V .001
100V
C28
A 12/10/03 INITIAL ISSUE
.22
50V REV Date DESCRIPTION Ecr(s)/Ecn(s) Chgd By Appvd by Date
CAUTION:
THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL. THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO
ST. LOUIS MUSIC, INC
TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND Signatures: Date:
THAT EXPLAINED IN THE OPERATING INSTRUCTIONS.
Drawn: WFB 12/10/03
4 NOTE: NOT SPLIT TEST POINT BUBBLE = CLEAN & DIRTY
Power Table
1901 Congressional, St. Louis, MO 63146
First Used On:
4
NOTES: Checked:
RefDes +14.7V -14.7V
1) CAUTION: SHOCK HAZARD!! Released:
THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER IC1 & IC2 8 4
AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE ◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo