User manual MCINTOSH MC275 MAINTENANCE MANUAL

[. . . ] [. . . ] PINS 1 AND 7- LEFT 70. 7 V OUTPUT PINS 2 AND 3 - LEFT 600 A OUTPUT PINS 1 AND 8 - RIGHT 70. 7 V OUTPUT PINS 4 AND 5- RIGHT 600 A OUTPUT SINGLE CHANNEL (MONO) OUTPUT NOTE FOR SINGLE CHANNEL OUTPUT P A R A L L E L OR SERIES CONNECT THE L AND R OUTPUTS TO OBTAIN DESIRED OUTPUT IMPEDANCE. 1 2 3 4&5 6 7 8 9 205 -57 -57 0 205 -57 -57 0 112 152 149 0 112 152 149 6. 3 KT88/6550 (V8, V9, V10. V11) 0 450 450 -57 6. 3 or 0 116 6 15 0 or 6. 3 116 112 149 0 38 260 170K * A 1 2 3 4 5 6 7 8 5% TOLERANCE R E S I S T O R S 0 . 6 "This resistance measured with condenser C25A shorted to ground. "This resistance measured with condenser C24B shorted to ground. High impedance VTVM is used to measure the operating voltages. FOLLOWING COMPONENTS ARE MATCHED TO 1%: R11 AND R36 R13 AND R38 R24 AND R27 R49 AND R52 SC 125-109 C Special components used in the MC275 are listed below. They may be purchased directly from Mclntosh Laboratory by ordering from the Service Department. Be sure to mention "Schematic No. , " description, and model and serial number for your amplifier when ordering parts. SCHEMATIC NO. [. . . ] [. . . ]