McIntosh C220 Service Manual

C220
Performance Specifications ........................................ 2
Notes ......................................................................... 2
Rear Panel .................................................................. 3
Section Location ........................................................ 3
Block Diagram ...................................................... 5 - 6
Interconnection Diagram ...................................... 7 - 8
Main Schematic and PCB ................................... 9 - 18
Display Schematic and PCB .............................. 19 - 24
Balanced/Data Sch and PCB .............................. 25 - 30
Pushbutton Sch and PCB .................................. 31 - 32
Headphone Sch and PCB ................................. 33 - 34
Parts List ............................................................ 37 - 43
Repacking Instructions ............................................. 45
CONTENTS
SERIAL NO. WS1001 And Above
C220
TUBE PREAMPLIFIER
SERVICE MANUAL
Serial N um ber W S10 0 1 A nd A bove
PRELIMINARY

McIntosh C220 Specifications

General

Type	Vacuum Tube Preamplifier
Frequency Response	20Hz - 20kHz (+0, -0.5dB)
Voltage Gain	15dB
Power Requirements	120 Volts AC, 50/60Hz, 40 watts
Dimensions	17-1/2 inches (44.45cm) wide, 6 inches (15.24cm) high (including feet), 18 inches (45.72cm) deep (including front panel and cables)
Signal to Noise Ratio (MM)	85dB
Signal to Noise Ratio (line)	100dB
Inputs	2 x Balanced, 3 x Line, 1 x Phono (MM/MC)
Total Harmonic Distortion	0.08%
Signal to Noise Ratio	100dB