Mc INTOSH hfe mcintosh ma2275 service free download

File name hfe_mcintosh_ma2275_service.pdf

TUBE INTEGRATED AMPLIFIER CONTENTS Performance Specifications ... 2 Data Schematic and PCB ... 27 - 28 Notes ... 2 Pushbutton Schematic and PCB ... 29 - 30 Rear Panel ... 3 Amplifier Schematic and PCB ... 31 - 34 Section Location ... 4 Power Supply Schematic and PCB ... 35 - 38 Block Diagram ... 5 - 7 Meter Schematic and PCB ... 39 - 40 Interconnection Diagram ... 8 - 10 Backup PS Schematic and PCB ... 41 Main Schematic and PCB ... 11 - 16 Terminal Schematic and PCB ... 42 Control Schematic and PCB ... 17 - 20 Parts List ... 43 - 48 Balanced Schematic and PCB ... 21 - 22 Exploded View and Parts List ... 49 - 52 Volume/Tone Schematic and PCB ... 23 - 26 Repacking Instructions ... 53 SERVICE MANUAL PERFORMANCE SPECIFICATIONS Power Output Preamplifier Maximum Voltage Output Minimum sine wave continuous average power output per Phono: 8V channel, both channels operating is: High Level: 8V 75 watts into a 2 ohm load Main Out: 8V at preamp output 75 watts into a 4 ohm load 75 watts into an 8 ohm load Voltage Gain High Level to Tape output: 0dB Rated Power Band High Level to Preamp output: 15dB 20Hz to 20,000Hz Wide Band Damping Factor Total Harmonic Distortion Greater than 18 Maximum Total Harmonic Distortion at any power level from 250 milliwatts to rated power output is: Power Requirements 0.5% for a 2, 4 or 8 ohm load 100 Volts, 50/60Hz at 3.6 amps 110 Volts, 50/60Hz at 3.6 amps Frequency Respons