Mcintosh C22 Service Manual 2
This is the 6 pages manual for Mcintosh C22 Service Manual 2.
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Extracted text from Mcintosh C22 Service Manual 2 (Ocr-read)
Page 1
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 inputsignal 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).
Page 2
PREAMP. SECTION 154 - 318 Unless otherwise specified, resistance values are in ohms, 1/2 watt, and 10% tolerance. Capacitance values smaller than 1 are in microfarads (µF); values greater than 1 are in picofarads (pF). Resistors marked with * are 1/4W. The terminal numbering of rotary switches and printed circuit board wires is for reference only. All voltages are measured under the following condi- tions: 1. Use of an 11 megohm input impedance VTVM 2. All voltages ±10% with respect to ground 3. AC input at 117 volts, 50/60 cycles 4. No signal at input terminals 5. Front panel controls at normal positions