Sony CDX-M9900 User Manual
38
Adjusting the cut-off frequency for the
front/rear speakers
front/rear speakers
— HPF (High pass filter)
To match the characteristics of the installed
speaker system, you can select the cut-off
frequency of the speakers.
speaker system, you can select the cut-off
frequency of the speakers.
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
“HPF,” 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
OFF
y 78Hz y 125Hz
6
Press
(MENU)
.
The display returns to the normal display.
To cancel the cut-off frequency, select “OFF” in
Step 5.
Step 5.
Adjusting the subwoofer
volume
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 –
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.
Cut-off frequency
Frequency (Hz)
Le
ve
l
off