Adjusting The Cut-Off Frequency Of The Subwoofer(S) - Sony CDX-C90R Operating Instructions Manual

Adjusting the cut-off
frequency of the
subwoofer(s)
Tips
• Each time you press
SOUND, the tuning
item changes as
follows:
$
SUR (Surround)
$
POS (Position)
$
SUB (Subwoofer)
$
BAS (Bass)
$
TRE (Treble)
• In step 3, press / to
switch to the
subwoofer's volume
adjustment. (see next
page)
• In step 4, press
BACK to return to
the normal display.
1
Press and hold SOUND for two seconds.
The DSP Sound Tuning Mode appears.
2
Press SOUND repeatedly to select "SUB
Tuning."
D S P S o u n d T u n i n g M o d e
3
Press VOL + or – repeatedly to select the
cut-off frequency.
The frequency appears in the order as follows.
62Hz ˜ 78Hz ˜ 99Hz ˜ 125Hz* ˜ 157Hz ˜ 198Hz
* Factory-set frequency
4
Press and hold SOUND for two seconds.
The normal display appears.
What is the cut-off frequency?
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, the
subwoofer(s) will output only
low frequency signals giving
you a clear sound image.
Cursor
VOL + / -
C D 1
SUB Tuning
C.off125Hz
Cut-off frequency
62
SOUND
4
2 . 1 6
GB
99 125 157 198
78
Frequency
73
DSP