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Preamplifi er output (Preamp-Out/Sub-Out)You can use the preamplifi er outputs
(Preamp-Out) of the car sound system to
connect external amplifi ers. In addition,
you can connect an amplifi er for operating
a subwoofer to the integrated dynamic low-
pass fi lter of the device (level and cutoff fre-
quency can be adjusted).
For this purpose, the amplifi ers must be
connected as described in the installation
instructions.
Adjusting the sub-out level
The sub-out level can be adjusted in 8 incre-
ments (0 to +7).
Press the AUD button <.
"BASS" appears on the display.
Press the or button 8 repeat-
edly until "SUBOUT" appears on the
display.
Press the or button : once to
reach the SUBOUT submenu.
Press the or button : to adjust a
value between 0 and +7.
When you have fi nished making your
changes,
press the AUD button < twice.
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Adjusting the sub-out cutoff
frequency
You can select 1 of 4 settings: 0 Hz, 80 Hz,
120 Hz and 160 Hz.
Press the AUD button <.
"BASS" appears on the display.
Press the or button 8 repeat-
edly until "SUBOUT" appears on the
display.
Press the or button : once to
reach the SUBOUT submenu.
Press the or button 8 repeatedly
until the desired frequency appears on
the display.
When you have fi nished making your
changes,
press the AUD button < twice.
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Preamplifi er output
02_LondonMP37_gb.indd 6602_LondonMP37_gb.indd 66 29.11.2006 16:21:12 Uhr29.11.2006 16:21:12 Uhr