McIntosh C-22 Service manual

C 22

SERVICE INFORMATION

STARTING WITH SERIAL NO. 10A01

MclNTOSH LABORATORY INC. 2 CHAMBERS STREET BINGHAMTON, NEW YORK

C 22

ELECTRICAL SPECIFICATIONS

Frequency Response

+0.5 to -0.5 dB, 20Hz to 20,000Hz

Distortion

Less than 0.2% at 10 volts output
Less than 0.02% at 3 volts output

Input Sensitivity (phono 1, phono 2, tape head)

2 millivolts for 2.5 volts output at 1kHz

Input Sensitivity (Microphone)

2.5 millivolts for 2.5 volts output

Input Sensitivity (aux, tape, tuner)

0.25 volts for 2.5 volts output

Hum And Noise (phono 1, phono 2, tape head)

74 dB below 10 millivolts input

Hum And Noise (aux, tape, tuner)

85 dB below rated output

Output (main)

2.5 volts with rated input. Up to 10 volts
can be developed without distortion.

Output (tape)

0.25 volts with rated input. Phono input
signal of 10 millivolts produces 1.25 volts

output.

Output (L & R)

1.0 volts with rated input on both channels.

A level control adjusts output.

Bass Control

+20 dB at 20Hz

Treble Control

+20 dB at 20,000Hz

LP Filter

Flat or sharp cutoff below 50Hz (down 30 dB @ 20Hz).

HF Filter

Flat or sharp cutoff above 5000Hz (down 30 dB @ 20,000Hz).