Using The Pushbuttons - McIntosh C28 Owner's Manual

The C 28 is designed to be used with one, two or
three tape recorders, for example—tape playback
from a tape deck (one without its own electronics)
and, in addition, two complete tape recorders. The
front panel pushbuttons control the latter. The push-
buttons permit normal playback of either recorder,
monitor of either recorder as recordings are being
made, or copying tapes from one recorder to another
while listening to a separate program.
TAPE 1
PUSHBUTTON OUT ... The program source is fed
to the power amplifiers and heard through the loud-
speakers.
IN . . . The program source becomes the recorded
tape on the tape recorder connected to TAPE INPUT
1. The recorded program from tape recorder 1 is fed
to the power amplifiers and heard from the loud-
speakers.
With the pushbuttons in the monitor position a
rectangle is lighted in RED above the pushbutton.
When the RED light is on only the tape can be heard.
To listen to other sources the pushbutton must be
out and the light off.
TAPE 2
The second complete tape recorder can be oper-
ated in the same fashion.
TAPE 2 pushbutton also controls the program from
a tape recorder plugged into the front panel jacks
marked TAPE INPUT and TAPE OUTPUT. When a
tape recorder is plugged into the front panel jacks all
the facilities for TAPE 2 are automatically switched
to the front panel packs. A tape recorder plugged
into the TAPE 2 INPUTS and OUTPUTS on the back
panel is automatically disconnected.
Use the front panel pushbutton TAPE 2 to record
on or playback from a tape recorder plugged into
the front panel jacks.
TAPE COPY 1->2
This pushbutton, when pushed IN, connects the
TAPE 1 OUTPUT jacks to the TAPE 2 INPUT jacks
without affecting the program being heard from the
speakers. In this position a copy of the program on
tape recorder 1 can be made on tape recorder 2.
With the pushbutton IN a rectangle is lighted in
ORANGE above the pushbutton.
To monitor the tape copy procedures use the TAPE
1 MONITOR pushbutton.

Using The Pushbuttons

11
TAPE COPY 2->1
This pushbutton, when pushed IN, connects the
TAPE 2 OUTPUT jacks to the TAPE 1 INPUT jacks
without affecting the
speakers. In this position a copy of the program on
tape recorder 2 can be made on tape recorder 1.
With the pushbutton in the IN position a rectangle is
lighted in ORANGE above the pushbutton.
To monitor the tape copy procedures use the TAPE
2 MONITOR pushbutton.
LF (LOW FREQUENCY FILTER)
Use the LF filter switch to reduce objectionable
low-frequency noise created by a turntable or record
changer or acoustically coupled feedback.
OUT . . . filter disconnected.
IN ... low-frequency rumble and noise below 50
Hz are reduced when the switch is pushed to the IN
position.
With the LF pushbutton in the IN position a rec-
tangle is lighted in GREEN above the pushbutton.
When the GREEN light is on the low frequency filter
is in operation.
HF (HIGH FREQUENCY FILTER)
Use the HF filter switch to reduce objectionable
high-frequency noise such as record scratch.
OUT . . . filter disconnect
IN . . . rolls OFF response sharply above 7000 Hz
With the HF pushbutton in the IN position a rec-
tangle is lighted in GREEN above the pushbutton.
When the GREEN light is on the high frequency filter
is in operation.
SPEAKER PUSHBUTTONS
Speakers can be turned on and off when properly
connected with the accessory Mclntosh SCR control.
(See diagram Pg. 7)
If the program is to be heard from the main speak-
ers only, the REMOTE pushbutton is pushed IN. This
turns off the remote speakers and lights a rectangle
in BLUE above the pushbutton. The BLUE light indi-
cates that the remote speakers are off and no pro-
gram can be heard from them.
If the program is to be heard from the remote
speakers only the MAIN pushbutton is pushed IN.
This turns off the main speakers and lights a rec-
program heard from the