McIntosh C42 Owner's Manual

9
How to Trim Input Volume Levels
How to Trim Input Volume Levels
Various components can have slightly different volume
levels. This results in the constant need to readjust the C42
volume control when listening to different program
sources. A volume trim feature on the C42 allows you to
adjust or trim the volume levels of the various inputs so
they are the same. The trimmed volume levels for all the
inputs are based on the reference volume level of the
TUNER input, which is fixed. Refer to Figure 1 during the
following steps:
NOTE: Trimmed volume levels will affect only the LISTEN
signals. The RECORD output levels are not affected by
the trim procedure and do not change. Any TRIM
adjustments made are retained in permanent memory
and can be changed only by performing a new TRIM
procedure.
1. Switch the C42
LISTEN selec-
tor to TUNER
and adjust the
volume control
to the desired
listening level.
2. Press the IN-
PUT TRIM
push-button.
The VOLUME
display will
read 00 and
the Red LED
above the push-button will turn ON.
3. Switch to another input such as CD.
4. Adjust the volume control either up or down as needed
until the listening level of the second input source is
the same as the Tuner level. The display will automati-
cally switch to dB and indicate the new setting for vol-
ume level with a range of ± 12dB.
5. Repeat Steps 3 and 4 to trim the volume levels for other
LISTEN input sources.
6. Press the INPUT TRIM push-button a second time to
exit the TRIM mode and the Red LED will turn OFF.
NOTE: Whenever you select a program source with trimmed
volume levels, the volume DISPLAY will automatically
move up or down to reflect the desired volume level set
for that source.
Optional Trim Procedure
1. Switch the RECORD selector to TUNER.
2. Switch the LISTEN selector to a different input source
such as CD.
3. Press the REC MONITOR push-button and adjust the
volume control to the desired listening level.
4. Press the INPUT TRIM push-button. The VOLUME
display will read 00 and the Red LED above the
push-button will turn ON.
5. Press the REC MONITOR a second time to return to
the LISTEN mode.
6. Adjust the volume control up or down as needed until
the listening level of the second input source is the
same as the Tuner level. The VOLUME display will
automatically switch to dB and indicate the new setting
for volume level with a range of ± 12dB.
7. Make an instant comparison between the two volume
levels by
switching REC
MONITOR ON
or OFF and
make further
adjustments as
needed to match
the volume lev-
els.
8. Press INPUT
TRIM a second
time to exit the
TRIM mode.
NOTE: The following table may be used to record your level
trim adjustments for the various inputs.
ecruoStupnIgnitteStluafeDgnitteSweN
renuT0
1epaT0
2epaT0
1eniL0
2eniL0
1xuA/hP0
2xuA0
DC0
Figure 1

McIntosh C42 Specifications

General

Brand	McIntosh
Model	C42
Category	Amplifier
Language	English