Input Level Adjustment; Power Mode - McIntosh C2500 Owner's Manual

Input Level Adjustment

Source Components can have slightly different volume
levels resulting in the need to readjust the C2500
Volume Control when switching between different
sources. The C2500 allows the adjustment of levels for
each of the Source Inputs for the same relative volume.
The CD and SERVER Inputs are used in the following
example.
Note: The range of adjustment is ± 6dB. The signal Level
present at the RECORD OUT Jacks is unaffected
by any changes in the Setup Level adjustment. The
level adjustments made are retained in permanent
memory. They can be changed during operation
of the C2500 by performing a Trim Level, refer to
page 24 for additional information.
1. Rotate the INPUT Control to select the CD Input
and adjust the VOLUME Control to the desired
listening level.
2. Press and hold the TONE BYPASS/SETUP Push-
button until the Setup Mode is active. Then press
the OUTPUT 2 / MENU ► Push-button until the
Setup Menu item "LEVEL: CD 0.0dB" appears
on the Front Panel Display. Refer to figure 16.
LEVEL: CD
Min
Figure 16
Note: The CD Input is serving as a reference level
or choose another source frequently listened
to. The Input Source should be set to a refer-
ence Level (Trim) of 0.0dB.
3. Rotate the INPUT Control until "LEVEL: SERV-
ER 0.0dB" appears on the Front Panel Display. If
necessary, rotate the VOLUME/ADJUST Control
to obtain the same volume level as the CD Input
by switching between the two Inputs using the
INPUT Control.
16
4. Rotate the INPUT Control until "LEVEL: SERV-
ER _._" appears on the Front Panel Display. The
illustration in figure 17 indicates a -2.5dB de-
crease in the SERVER Level to match the volume
level of the CD Input.
5. Repeat step 4 for other Inputs with component
sources connected until they all have the same
relative volume levels. Record any changes made
to the various inputs from the default settings in
the "Input and Power Control Settings" chart.
6. To exit from the Setup Mode, press the TONE
BYPASS/SETUP Push-button.
Input Name
TUNER
CD
CD2
0.0dB
|| Max DVD
AUX
SERVER
USB-D/A
PHONO MC
PHONO MM
LEVEL: SERVER
Min ¦ ¦ ¦ ¦
Figure 17
Input and Power Control Settings
Connection New Level
Type (Trim)

Power Mode

The C2500 incorporates an Auto Off Feature, which
automatically places the preamplifier into the Power
Saving Standby/Off Mode. This occurs approximately
30 minutes after there has been an absence of audible
audio signals on the selected input (on either chan-
nel) or user activity (includes changes to any of the
-2.5dB
Operation Functions such as source selection, volume
Max
adjustment, etc). If it is desirable to disable the Auto
Off Feature perform the following steps:
1. Press and hold the TONE BYPASS/SETUP Push-
button until the Setup Mode is active. Then press
the OUTPUT 2 / MENU ► Push-button until the
Setup Menu item "SETUP: POWER MODE, Auto
Off: Enabled" appears on the Front Panel Display.
Refer to figure 18.
Triggers
1 2
2. Rotate the VOLUME/ADJUST Control until
"SETUP: POWER MODE, Auto Off: Disabled"
appears on the Front Panel Display. Refer to
figure 19.
3. Press the TONE BYPASS/SETUP Push-button to
exit the Setup Mode.
SETUP: POWER MODE
Auto Off: Enabled
Figure 18
SETUP: POWER MODE
Auto Off: Disabled
Figure 19