Ampeg svt vr preamp 07s598 schematics

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3-7-06 05/11/06 WFB A C B Plot Time: Drawn: REV Sheet INITIAL ISSUE CHG CAP VALUES FM .22 TO .1 of 2 2NONE 8/25/05 Date: Ecr(s)/Ecn(s)R01922 Appvd by Date 5 4 A A B B C C D D E E Plot Date: Checked: Released: F F G G 5 4 31 2 BASS AMP3 1 2 NOTES:Date Drawing Number: Class Code: Drawing Type: Schematic 1901 Congressional, St. Louis, MO 63146 REM ST. LOUIS MUSIC, INC THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO Chgd By DESCRIPTION AND 10 MEGOHM DIGITAL VOLTMETER. 1) CAUTION: SHOCK HAZARD!! TOUCHING INTERNAL PARTS. CAUTION: Tolerance: Drawing Title: First Used On: Drawing Size: Signatures: Thu May 11, 2006 07S598 3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE 2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/4W-5% TOL.AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL. CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL. THAT EXPLAINED IN THE OPERATING INSTRUCTIONS. THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED3-7-06 05/11/06 WFB A C B Plot Time: Drawn: REV Sheet INITIAL ISSUE CHG CAP VALUES FM .22 TO .1 of 2 2NONE 8/25/05 Date: Ecr(s)/Ecn(s)R01922 Appvd by Date 5 4 A A B B C C D D E E Plot Date: Checked: Released: F F G G 5 4 31 2 BASS AMP3 1 2 NOTES:Date Drawing Number: Class Code: Drawing Type: Schematic 1901 Congressional, St. Louis, MO 63146 REM ST. LOUIS MUSIC, INC THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO Chgd By DESCRIPTION AND 10 MEGOHM DIGITAL VOLTMETER. 1) CAUTION: SHOCK HAZARD!! TOUCHING INTERNAL PARTS. CAUTION: Tolerance: Drawing Title: First Used On: Drawing Size: Signatures: Thu May 11, 2006 07S598 3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE 2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/4W-5% TOL.AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL. CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL. THAT EXPLAINED IN THE OPERATING INSTRUCTIONS. THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED A -15V 200VDC +315V 15.5V 21 J5 21 J8 110mV1.1V +12V R30100K 1234 J12 1234 J9 AB CSW5:B C51 .1 400V C52 470pF 500V R251K AB CSW4:B J18 250VDC .01C33400V .0047C44100V R71100K 1/2W 1% 21 J6 0VDC 3.32M 1/2W 1%R15 C49 .1 400V 1M 1/2W 1%R35 R311K AB CSW4:A ULTRA HIGH R26470 +315V J17 C50 .1 400V .001C35400V C48 470pF 500V R2100K 1/2W 1% R347.5K 1/2W 1% C1 .0047 100V JACK BOARD BREAK-OFF PC BOARD 23 1IC1:A NE5532 V5:A {Label} R4410M 1/2W 1% 221K 1/2W 1%R16 +315V AB CSW5:A ULTRA LOW R3468.1K 1/2W 1% +11VDC OPERATE -13VDC STANDBY D1 1N914 75V PIV +11VDC OPERATE -13VDC STANDBY V5:B R69221K 1/2W 1% CW 1M AP5 VOLUME 100K 1/2W 1%R20 R60100K 1/2W 1% RING_SWTIP_SW SLEEVETIP RING J4 CH 2 NORMAL R447.5K 1/2W 1% C2 .0047 100V RING_SWTIP_SW SLEEVETIP RING J2 CH 1 NORMAL RING_SWTIP_SW SLEEVETIP RING J1 CH 1 BRIGHT R1100K 1/2W 1% R271M 100KR29 1MR28 C36 .001 400V 3.32K 1/2W 1%R17 65 7IC1:B NE5532 22KR64 3.32K 1/2W 1%R21 CW P71M A BASS CW P61M A TREBLE RING_SWTIP_SW SLEEVETIP RING J3 CH 2 BRIGHT SWITCH BREAK-OFF PC BOARD #2 4. VOLTAGES IN RECTANGLES ARE PEAK TO PEAK SIGNAL VOLTAGES. OTHER VOLTAGES ARE D.C. 5. TEST CONDITIONS: VOLUMES @ 10, TONES FLAT, AND SWITCHES @ CENTER OR LEFT. 6. CIRCUIT GND LED GND CHASSIS GND .