Sony CDX-M9900 Operating Instructions - Page 33

Adjusting the subwoofer volume, — Sub Woofer, LPF Low pass filter

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Adjusting the subwoofer volume - Sub Woofer 1 Press (SOURCE) to select a source (radio, CD, MD or AUX). 2 Press (MENU). 3 Press < or , repeatedly to select "Sound," then press (ENTER). 4 Press < or , repeatedly to select "Sub Woofer," then press (ENTER). 5 Press < or , repeatedly to adjust the volume level, then press (ENTER). The volume level is adjustable in 1 dB steps from -∞, -10 dB to +10 dB. 6 Press (MENU). The display returns to the normal display. Tip "-∞" appears when the volume level is below -10 dB. Level Adjusting the cut-off frequency for the subwoofer(s) - LPF (Low pass filter) To match the characteristics of the connected subwoofer(s), you can cut out the unwanted high and middle frequency signals entering the subwoofer(s). By setting the cut-off frequency (see the diagram below), the subwoofer(s) will output only low frequency signals for a clearer sound. Cut-off frequency off Frequency (Hz) 1 Press (SOURCE) to select a source (radio, CD, MD or AUX). 2 Press (MENU). 3 Press < or , repeatedly to select "Sound," then press (ENTER). 4 Press < or , repeatedly to select "LPF," then press (ENTER). 5 Press < or , repeatedly to select the desired cut-off frequency, then press (ENTER). Each time you press < or ,, the frequency changes as follows: OFF y 125Hz y 78Hz 6 Press (MENU). The display returns to the normal display. To cancel the cut-off frequency, select "OFF" in Step 5. 33

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33
Adjusting the subwoofer
volume
— Sub Woofer
1
Press
(SOURCE)
to select a source
(radio, CD, MD or AUX).
2
Press
(MENU)
.
3
Press
<
or
,
repeatedly to select
“Sound,” then press
(ENTER)
.
4
Press
<
or
,
repeatedly to select
“Sub Woofer,” then press
(ENTER)
.
5
Press
<
or
,
repeatedly to adjust
the volume level, then press
(ENTER)
.
The volume level is adjustable in 1 dB steps
from –
∞
, –10 dB to +10 dB.
6
Press
(MENU)
.
The display returns to the normal display.
Tip
“–
∞
” appears when the volume level is below –10 dB.
Adjusting the cut-off frequency for the
subwoofer(s)
— LPF (Low pass filter)
To match the characteristics of the connected
subwoofer(s), you can cut out the unwanted high
and middle frequency signals entering the
subwoofer(s). By setting the cut-off frequency
(see the diagram below), the subwoofer(s) will
output only low frequency signals for a clearer
sound.
1
Press
(SOURCE)
to select a source
(radio, CD, MD or AUX).
2
Press
(MENU)
.
3
Press
<
or
,
repeatedly to select
“Sound,” then press
(ENTER)
.
4
Press
<
or
,
repeatedly to select
“LPF,” then press
(ENTER)
.
5
Press
<
or
,
repeatedly to select the
desired cut-off frequency, then press
(ENTER)
.
Each time you press
<
or
,
, the frequency
changes as follows:
OFF
y
125Hz
y
78Hz
6
Press
(MENU)
.
The display returns to the normal display.
To cancel the cut-off frequency, select “OFF” in
Step 5.
Cut-off frequency
Frequency (Hz)
Level
off