Adjusting Phase; Listening To A Stereo Record; Adjusting The Balance Control After The System Has Been Balanced; Adjusting For Special Effects - McIntosh C11 Owner's Manual

ADJUSTING PHASE

1. Place the COMPENSATOR switch in the
RIAA position.
2. Set the MODE SELECTOR to STEREO.
3. Turn the BASS CONTROLS and TREBLE
CONTROLS to 0.
Stand approximately 10 feet in front
and midway between the loudspeakers. The
source of sound should appear to be directly
in front of you. Alternate the PHASE switch
between NORMAL and REVERSE. If the
sound is not directly in front of you in the
NORMAL position, reverse the leads to one
loudspeaker. The PHASE control is used to
correct phase in the source material when-
ever necessary.

LISTENING TO A STEREO RECORD

Upon completion of the connecting and
balancing instructions, the C11 is ready for
use. To listen to stereo records, proceed as
follows:
1. Set the MODE SELECTOR to STEREO.
2. Set the PHASE switch to NORMAL.
3. Set the H.F. cutoff filter to FLAT.
4. Set the LOUDNESS control to NORMAL.
5. Rotate the INPUT SELECTOR to PHONO
1 or PHONO 2 whichever is connected to the
cartridge you wish to hear.
6. Set the COMPENSATOR control to
RIAA.
7. Set the BASS CONTROLS and TREBLE
CONTROLS to 0.
8. Place the RUMBLE control in the FLAT
position.
9. Place the TAPE control in the NORMAL
position.
10. Adjust the VOLUME control to the de-
sired volume.
ADJUSTING BALANCE CONTROL AFTER
THE SYSTEM HAS BEEN
If after balancing your system as outlined
in this manual you then find that nearly all
12
of
BALANCED
records always require an adjustment of the
BALANCE control to one side of the center,
the condition indicates an unbalanced stereo
cartridge. While this is no great disadvantage
as such, you can correct for it by offsetting
one of the power amplifier input gain settings.
When switching from STEREO to STEREO
REV you will now experience a change in
volume as a result of this correction.
If the stereo sound seems to come from
either side of the room instead of being dis-
tributed between the loudspeakers, adjust
the PHASE control to 180°. This listening
effect is due to reproducing sound that is out
of phase from one channel to the other. You
will find some records differ from others in
this respect and that some tapes differ from
records.

ADJUSTING FOR SPECIAL EFFECTS

H.F. Cutoff Filter. If you wish to reproduce
old, badly worn records, you can minimize
the surface noise by switching the H.F. cutoff
filter to the FILTER position. (See section
entitled "Front Panel Facilities.")
Rumble Filter. If you are using a turntable
or changer which has low-frequency rumble
noise, you may reduce it by pushing the
RUMBLE filter switch to the FILTER position.
Bass Controls and Treble Controls. The
tone balance which you hear when listening
to an orchestra is affected by the conductor's
instructions to his musicians, the acoustical
environment in which you are listening, and
your own subjective hearing interpretation.
Tone balance will even depend on the room
or hall where you listen to the music. Con-
sidering these conditions, it is easy to see
why tone balance controls play a major role
in correcting for the following factors:
1. Each person's subjective idea of tone
balance.
2. Loudspeaker frequency response char-
acteristics.
3. Loudspeaker placement in the listen-
ing room.