McIntosh C11 Preamp Schematic.pdf

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1、 PHASE SWITCH MODEL NUMBER: C 8, C 11, C 22 DATE: APRIL 1965 MODIFICATION: Replace the selenium rectifier with silicon rectifiers. These silicon rectifiers have much longer life. DESCRIPTION: The original selenium rectifier in the C 8 is replaced by two (2) silicon rectifiers; the original selenium

2、rectifier in the C 11 and C 22 is replaced by four (4) silicon rectifiers. The rectifiers are McIntosh part number 070-014, or any 50 PIV 750 MA rectifiers. PROCEDURE: The selenium rectifier is replaced by a terminal strip and the new silicon rectifiers are installed as shown in the following diagrams. NOTE THAT TERMINAL STRIPS ARE REQUIRED C 8, C 11, C 22