McIntosh MC275 Power Amplifier Schematic.pdf
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McIntosh MC275 Power Amplifier Schematic.pdf
IOOK V 4 12 AZ7 L I 220.H. 5w H V 8 KT 88/ 6550 .6 V YEL |YEL V 10 KT-88/ 6550 / T 1 M -216 A BRN_ BRN/WHT GRN_ GRN/WHT BLK/WHT WHT LEFT OUTPUT COM 4 A 8 A 16 A 5 600 A/70.7 V 6 OUTPUTS 12/250 -57V yel Tyel VIO3 BLK , YEL/WHT YEL/WHT x -O ? .6V O U_l 2 20A 5 W VL/V R 58 3 450V T 2 M-2168 BRN o BRN/WHT o !g grn -cx GRN/WHT o o BLK/WHT 8LU/ P WHT RIGHT OUTPUT 600A /70.7 OUTPUT RECEPTACLE CONNECTIONS PIN I - GROUND,70.7 VS 115V RETURN, AND 600 AC.T. PINS I AND 7 - LEFT 70.7 V OUTPUT PINS I AND2 - LEFT 115 V OUTPUT PINS2 AND 3 - LEFT 600 A OUTPUT, LEFT 230V OUTPUT PINS I AND 8-RIGHT 70.7V OUTPUT PINSI AND 4 - RIGHT 115 V OUTPUT PINS4 AND5 - RIGHT 600 A OUTPUT, RIGHT 230VOUTPUT SINGLE CHANNEL (MONO) OUTPUT NOTE FOR SINGLE CHANNEL OUTPUT PARALLEL OR SERIES CONNECT THE L AND R OUTPUTS TO OBTAIN DESIRED OUTPUT IMPEDANCE. * 5% TOLERANCE RESISTORS A R II AND R 36, R 13 AND R 38, R 24 AND R 27, ALSO R 49 AND R52 MATCHED TO 1% R 60 cnj R 61 10 K 2 W P IOOK 1W OJ CVJ oT 1. DC MEASUREMENTS TAKEN WITH A VACUUM TUBE VOLTMETER 2. NOMINAL TOLERANCE ON COMPONENT VALUES MAKES POSSIBLE A VARIATION OF+15% IN VOLTAGE AND RESISTANCE READINGS. SCHEMATIC, MC -275 DM AWN B 1 SCAUC MATERIAL CHKO - , OATS 4 ,g V LlI 1. . _ rOAt to | APHD . - . SC 125-109