InterM A60 & 120 free download

File name InterM-A60_120 amp.pdf

SERVICE MANUAL P U B L I C A D D R E S S AMPLIFIER A-60/120 www.inter-m.com MADE IN KOREA NO: 9007985000 ELECTRICAL ADJUSTMENT PROCEDURE AMP SECTION 1. OFF SET VOLTAGE A. Setting Set the master volume control minimum. B. Connection IDLE VR10 OFFSET MAIN PCB (4005181100) CHASSIS VOLT METER C. Adjustment Control OFFSET until voltmeter is the "0" position. (at Output Terminal) 2. IDLE CURRENT A. Setting Set the master volume control minimum. B. Connection R56 R57 R58 R59 VOLT METER CONTENTS Electrical Adjustment Procedure Specifications Electrical Parts List Top and Bottom View of P.C. Board Wiring Diagram Block Diagram Schematic Diagram Exploded View of Cabinet & Chassis / Mechanical Parts List Ass'y Drawing 1 2 3, 4 5 6 7 8, 9 10, 11 12, 13 IDLE VR11 MAIN B'D (4005181100) C. Adjustment A-60: Adjust VR11 so that the current through the R56 and R58 become 10 milliampere. When that voltage is 10 millivolt, the current becomes 10 milliampere. A-120: Adjust VR11 so that the current through the R56 and R58 become 5 milliampere. When that voltage is 5 millivolt, the current becomes 10 milliampere. 1 SPECIFICATIONS ELECTRICAL · Rated Output/Impedance ...A-60: 15.5V/4, 70V/81.6, 100V/166.7 ...A-120: 21.9V/4, 70V/40.8, 100V/83.3 · Input Sensitivity/Impedance MIC 1-3... -60dB/600, BAL Aux 1 ... -10dB/10k, UNBAL Aux 2 ... +3dB/10k, UNBAL · Frequency Response (±3dB)...80Hz~16kHz · T.H.D...Less than 1% · S/N MIC ...Better than 50dB Aux...Better than 75dB · Tone Control HIGH (10kHz)...±12dB LOW (100Hz) ...±12dB GENERAL · Power Source ...AC 100V­240V, 50/60Hz · Power Consumption ...