McIntosh C220

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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

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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