McIntosh MC30 Power Amplifier Schematic.pdf
OUTPUT SOCKET CONNECTIONS PRE-AMP INPUT .5 V INPUT -INPUT 5 V. GN 4 Ohms - Pins 1 4 2 8 On ns - Pins 1 4 3 16 Onns - Pins 144 600 Onus - Pins 748 70. 7 Volts - Pins 54 Pin 6 ts oround and 600 Onn CT PREAMP INPUT SOCKET CONNECTIONS Pin 1 - Ground Pin - Preanp Inpu Pin 3 -Not Used Pin 4 - 310V 3+ at 3. Pin 5 - 0.5 Volt Inpu Pin 6 - Not Used Pin 7 4 8 - 6.3V at 1A Cl .1 nr, 200V C2 Not Used C3 100 nr, 12V C4 8nF, 250V C5 ,22nr, 400V CS Not Used C7 470nnr, 500V CS .047nr, 10%, 600V C9 .047nr, 10%, 600V CIO .22nr, 600V, riLn Cll .22nr, 600V, riLn Ci2A 35nr, 500V C12B 80nr, 500V a.2c 15nr, 450V Cl 3 8 nr, 250V Cl 4 .47nr, 200V CIS .47nr, 200V R1 250K, Linear R2 100K R3 27K R4 1M R5 3.3K R6 68 Ohns, 5% R7 100K R8 3 3 OK R9 680K RIO 18K, IN mi No T Us T. R12 Not Used Ri3 2.2K, 5% R14 27K, 5% R15 3OK. 5% R16 2 2 ok R1 v 1.2K R18 220K RIO 12K*, 2W R20 12K*, 2W R21 56K, 5% R22 1M R23 100K, 5% R24 1M R25 56K R26 56K R27 10K, 10W R2S 150 Grins, 1W R29 250 Onns, Linear R30 No T Us ED R3l 2. 2M R32 330K R33 56K R34 56K A/W If *Ma Tcxm to 1% SRI 4-OOPIV, 10MA Note 1 - This jumper stra* vay be REMOVED IF UUGROUNDED LOW IMPEDANCE OUTPUTS ARE DESIRED. VOLTAGE AND RESISTANCE CHART Pin No. DC Volts No Signal DC Volts at 30W out AC Volts at 30W out Resistance Unit off 1 134 120 1.3 330K* 2 0 0 0.24 1M 3 1.2 1. 1 0.22 3.3K 4&5 Fil 6.3 V. ac to Pin 9 - 0 to 70 6, 7, 8 - - - - 9 Fil - - 0 to 70 1 270 235 9 40* 2 134 120 13 330K* 3&8 138 126 0. 57 18K 4&5 Fil 6.3 V. ac to Pin 9 - 0 to 70 6 270 235 9 43K* 7 110 100 0 26M* 9 Fil - - 0 to 70 1 355 295 132 12K* 2 0 0 9 220K 3&8 16 14 0. 32 1.2K 4&5 Fil 6.3 V. ac to Pin 9 0 to 70 6 355 295 132 12K* 7 0 0 9 220K 9 Fil - - 0 to 70 1 440 365 94 185* 2 -46 -46 134 1M 3 -45 -45 118 270K 4&5 Fil 6.3 V. ac to Pin 9 - 0 to 70 6 440 365 94 185* 7 -46 -46 134 1M 8 -45 -45 118 270K 9 Fil - - 0 to 70 1 0 0 0 2 Fil 6. 3 V. ac to Pin 7 - 0 to 70 3 440 365 94 200* 4 440 365 94 200* 5 -45 -45 118 270K 6 - - _ 7 Fil - - 0 to 70 8 1. 1 2. 7 94 25 1 - - _ 2 455 400 7. 9 (Ripple) 0* 3 - - - 4 395 AC 385 AC 385 45 5 - - _ 6 395 AC 385 AC 385 45 7 - - _ 8 455 400 0*
