18
Power Mode
The C49 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 user ac-
tivity (includes changes to any of the Operation Func-
tions such as source selection, volume adjustment, etc)
or absence of an audio signal. If it is desirable to dis-
able the Auto Off Feature perform the following steps:
1. Press and hold in the INPUT Control to enter the
SETUP MODE. Refer to figure 2 on page 13.
2. Rotate the INPUT Control until “SETUP: Auto
Off, Enabled” appears on the Information Display.
Refer to figure 46.
3. Rotate the VOLUME (ADJUST) Control to select
“Disabled”. Refer to figure 47.
Figure 46
Figure 47
IR Sensor
The C49 Front Panel Sensor, which receives the sig-
nals from the HR085 Remote Control, can be switched
off to prevent interference when an external IR Sensor
is connected. To de-activate the Front Panel IR Sensor
perform the following steps:
1. Press and hold in the INPUT Control to enter the
SETUP MODE. Refer to figure 2 on page 13.
2. Rotate the INPUT Control until “SETUP: Front
IR, Enabled” appears on the Information Dis-
play. Refer to figure 44.
3. Rotate the VOLUME (ADJUST) Control to select
“Disabled”. Refer to figure 45.
4. Exit the SETUP Mode by several presses of the
INPUT Control.
Figure 44
Enabled
Figure 45
Disabled
Remote Control Codes
The Remote Control included with the C49 utilizes the
NORMAL McIntosh Control Codes. The Second Set
of Control Codes the C49 will respond to is referred
to as the ALTERNATE Codes. The Alternate Codes
are used when the C49 is used in the same location as
another McIntosh Preamplifier and/or A/V Processor.
This will prevent the Remote Control from affect-
ing the operation of both units at the same time. To
activate the Remote Control ALTERNATE Codes
perform the following steps:
1. Press and hold in the INPUT Control to enter the
SETUP MODE. Refer to figure 2 on page 13.
2. Rotate the INPUT Control until “SETUP: IR
Codes, Normal” appears on the Information
Display. Refer to figure 42.
3. Rotate the VOLUME (ADJUST) Control to the
Alternate Codes. Refer to figure 43.
4. It is now necessary to change the HR085 Remote
Control over to the Alternate Codes. Information
on the HR085 Remote Control is available for
download from the McIntosh Web Site:
http://www.mcintoshlabs.com/us/Products/pages/
ProductDetails.aspx?CatId=preamplifiers&Produ
ctId=C49
5. Exit the SETUP Mode by several presses of the
INPUT Control.
Figure 42
Normal
Figure 43
SETUP: IR Codes
Alternate
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