Ampeg ba 115 07s338 schematics

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DCBA 4 3 2 NOTES: THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL. CAUTION: TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE TOUCHING INTERNAL PARTS. 1) CAUTION: SHOCK HAZARD!! 2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/4W-5% TOL. CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL. 3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE AND 10 MEGOHM DIGITAL VOLTMETER. SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND THAT EXPLAINED IN THE OPERATING INSTRUCTIONS. DCBA 1 FE 1 Signatures: Checked:Drawn: SheetClass Code: THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO Drawing Size: Drawing Type: Schematic Tolerance: Released: REV Date DESCRIPTION E A 08/04/05 2 OK CONTROL ISSUE 0 02/08/06 INITIAL ISSUE C ofDrawing Title: Drawing Number: NONE 2 Ecr(s)/Ecn(s) First Used On: ST. LOUIS MUSIC, INC Date: 08/04/05 11880 Borman Drive, St. Louis, MO 63146 Chgd By Appvd by F 07S3 38 2 SCHEMATIC -BASS AMP Date 4 3 DCBA 4 3 2 NOTES: THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL. CAUTION: TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE TOUCHING INTERNAL PARTS. 1) CAUTION: SHOCK HAZARD!! 2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/4W-5% TOL. CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL. 3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE AND 10 MEGOHM DIGITAL VOLTMETER. SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND THAT EXPLAINED IN THE OPERATING INSTRUCTIONS. DCBA 1 FE 1 Signatures: Checked:Drawn: SheetClass Code: THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO Drawing Size: Drawing Type: Schematic Tolerance: Released: REV Date DESCRIPTION E A 08/04/05 2 OK CONTROL ISSUE 0 02/08/06 INITIAL ISSUE C ofDrawing Title: Drawing Number: NONE 2 Ecr(s)/Ecn(s) First Used On: ST. LOUIS MUSIC, INC Date: 08/04/05 11880 Borman Drive, St. Louis, MO 63146 Chgd By Appvd by F 2 SCHEMATIC -BASS AMP Date 4 3 PAGE_NEXT C16 .0022 100V R13 100K R12 100K 22K R21 47K R24 2 3 1IC2:A TLO-72 6 5 7 IC2:B TLO-72 R20 100K R10 22K R81K +40V R15 22K C4 22 C5 22 R2 270 R3 270 1N914 D4 47 R26 6 5 7IC3:B NE5532 R4 1K 220 R9 SPKR_GND C20 1 MPS-A06 Q3 35V 10 C31 -40V 220 R31 220 R35 220 R41 Q4 MJE-340 220 R34 -40V D9 1N4744 15V D8 15V 1N4744 3.3 1W R28 D7 15V 1N4744 C15 .022 R18 1K C8 56 pF 200V 22K R17 C11 10 35V 3.3K 1/2W R7 6 5 7 IC1:B TLO-72 22K R16 33 pF 200V C12 1N914 D3 D5 1N914 1 C44 1 3 2 J5 BALANCED LINE OUT 330 pF C13 100V R59 1M 3.3K 1/2W R6 R19 33K 820 1W R5 Q1 MJE-350 +40V .1 R61 3W D6 1N4744 15V .1 C17 100V ASSY P/N 07-338-01 CWP5 50K L LOW C9 10 35V 2 3 1 TLO-72 IC1:A 47K R23 S D G Q6 J112 1N914 D2 .047 C2 100V 1K R22 33 pF C10 200V -16V -40V -16V G D S IRFP-140R Q5 1K R42 R49 47 1K R43 SEE NOTE. CW AP1 BIAS ADJ 500 G D S IRFP-9140RQ2 1K R50 47 R33 +16V NOTE: BIAS SETTING AS FOLLOWS; SET AP1 BIAS ADJUST CONTROL FOR 5mV ACROSS R61 WITH NO SIGNAL APPLIED, NO LOAD. RL CD INPUT J3 CWP3 50K L HIGH CWP4 50K L MID R14 100K OC1 VTL-5C7 2 3 1 NE5532 IC3:A R25 10K SLVE_SW SLEEVE TIP_SW RING RING_SW TIP J4 HEADPHONE 4.7K R44 2 1 J21 CW 20K RA MASTER P2