McIntosh C8

- 7 -
front panel controls are effective, with the exception of the Bass Compensation
switches, and may be used to alter the response as desired.
Channel 4:
Channel 4 is equalized for use with high level magnetic cartridges delivering
30 MV of signal. It is terminated for use with the Pickering cartridge.
Channel 4 may be modified for use with other high level magnetic cartridges by
changing the terminating pad of R6 and R7, or may be used for a second low level
cartridge by replacing R6 and R7 with a single terminating resistor as recommended
by the cartridge manufacturer.
Channel 5:
Channel 5 is equalized for use with low level magnetic cartridges such as
G.E., Audax, or Fairchild with input transformer. A variable terminating con-
trol is provided, and a switch for selecting either magnetic cartridges (velocity
responsive), or amplitude responsive cartridges, such as a ceramic or F.M. type.
When using a magnetic cartridge this switch should be in the "MAG" position
and the control labeled "LOAD" should be adjusted to the resistance recommended
by the manufacturer. High frequency roll-off of the cartridge may be obtained by
decreasing the recommended load. The load control is calibrated from "0" to
"100" with each calibration representing thousands of ohms.
Amplitude responsive cartridges may be used on channel 5 to allow full use
of the extremely flexible compensation available. By placing the slide switch in
position "F.M." and the "LOAD" control to "100", cartridges of this type may be
used.
All controls are effective on channels 4 and 5.
The Bass and Treble compensation switches may be used to compensate
recordings as recommended by the manufacturer or to adjust the compensation for a
more pleasing tonal balance for the listener. The Bass and Treble tone controls
are independent of the compensation switches and may be used as fine adjustments
in conjunction with these switches. In addition, a rumble filter is provided to
reduce turntable "wow" and "rumble".
•
The five position channel Selector switch may be used to select any of the
five input channels available.
The Volume control selects the desired listening level and since it is located
at the output of the Audio Compensator, the high signal to noise ratio of the unit is
maintained at all levels. By properly adjusting the input potentiometer on channels