McIntosh C50 Service Manual

C50
C50
AUDIO PREAMPLIFIER
SERVICE MANUAL
SERIAL NO. AAW1001 And Above
Performance Specifications ..........................................2
Notes ...........................................................................2
Rear Panel ...................................................................3
Section Location .....................................................5 - 6
Block Diagram .......................................................7 - 8
Interconnection Diagram ......................................9 - 10
Display Schematic and PCB................................11 - 22
Control Schematic and PCB ................................23 - 34
Audio Schematic and PCB ..................................35 - 46
Balanced I/O Schematic and PCB .......................47 - 50
Digital Audio Schematic and PCB .......................51 - 58
Backup PS Schematic and PCB ...........................59 - 62
Power Supply Schematic and PCB ......................63 - 66
Headphone Schematic and PCB .........................67 - 68
8-Band EQ ..........................................................69 - 70
Audio Expansion ................................................71 - 74
Meter Light Schematic and PCB ..........................75 - 76
Parts List .............................................................77 - 92
Repacking Instruction ................................................93
CONTENTS

McIntosh C50 Specifications

General

Signal to Noise Ratio	100dB
Output Impedance	200 ohms
Power Consumption	50 Watts
Frequency Response	20Hz to 20, 000Hz +0, -0.5dB
Total Harmonic Distortion	0.002%
Dimensions	17.5" (44.45cm) x 6" (15.24cm) x 18" (45.72cm)
Maximum Output Voltage	16V RMS (Balanced), 8V RMS (Unbalanced)
Gain	15dB
Phono Input Impedance	47K Ohms
Inputs	6 (including phono)
Outputs	3 unbalanced, 2 balanced