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McIntosh C108 Instruction Manual
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McIntosh C108 Instruction Manual

McIntosh C108 Instruction Manual

Audio compensator
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INSTRUCTION MANUAL
M c l N T O S H MODEL C 1 0 8
AUDIO C O M P E N S A T O R

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Summary of Contents for McIntosh C108

  • Page 1 INSTRUCTION MANUAL M c l N T O S H MODEL C 1 0 8 AUDIO C O M P E N S A T O R...

  • Page 3: Physical Specifications

    - 1 - INSTRUCTION MANUAL McINTOSH MODEL C-108 AUDIO COMPENSATOR The McIntosh Audio Compensator is a complete control unit for professional and home entertainment systems. Five input channels are provided; three which produce constant amplification over the audio spectrum of 20 cycles to 20, 000 cycles, and two which are equalized for use with magnetic phonograph cartridges.
  • Page 4 - 2 - 4. Turn the power amplifier volume control (50W-2 or 20W-2) to full volume setting. The volume control on the A-116, 30 watt power amplifier, is inoperative when the pre-amp socket is used and this step may be disregarded when using this amplifier.
  • Page 5 - 3 - 6. Follow steps 4 through 9 above. 7. Adjust the hum centering potentiometer on the D-101 for minimum hum. 8. Follow steps 11 and 12 above. INPUT CONNECTING PROCEDURE The inherent hum and noise voltages applied to the input of the C-108 is -110 DBM, or less than 3 microvolts.

  • Page 6: Operation

    - 4 - 2. The C-108 and magnetic phonograph cartridges should be mounted at least two feet from power transformers. 3. Inter-unit cables provide a complete ground system. Alternate ground wires create ground loops which will usually increase hum level. 4.
  • Page 7 - 5 - Channels 1 and 2: Channels 1 and 2 are each terminated by a potentiometer. These potentiom- eters are screw driver adjustments on the back panel and should be used to reduce signal input to these channels if in excess of . 1 volts. Correct adjustment occurs when the sound level of channels 1 and 2 is equivalent to that of channels 4 or 5.
  • Page 8 — 6 — The Aural Compensator may be used to compensate for the response charac- teristic of the ear as loudness is adjusted. The response of this control is plotted on page 9. This control should not be used until all other adjustments have been made.
  • Page 9 - 7 - For convenience of installation, we have made the following connectors and cables available from your dealer. J-100 Output Plug J-101 J-101 Input plug *J-102 J-100 Output plug fitted with 6 foot length of two conductor cable, connected for 4 ohm output of McIntosh 50W-2 or 20W-2.
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