Sony CDX-C90 Adjusting the turn-overfrequency of the bass and treble, 4 Press and hold SOUND for two seconds, 1 Press and hold SOUND and hold for two seconds

Adjusting the turn-over frequency of the bass and treble

You can adjust the bass and treble turn-over frequencies to best fit the acoustic characteristics inside your car.

Turn-over frequency

Frequency (Hz)

Cursor

VOL+/-

SOUND

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 volume adjustment of bass and treble. (see next page)

1 Press and hold SOUND and hold for two seconds.

The DSP Sound Tuning Mode appears,

2 Press SOUND repeatedly to select “BAS” or “TRE.”

DSP Sound Tuning Mode CD1 5 3 . 31

BAS	Tuning
	250Hz

3 Press VOL + or – repeatedly to select the turn-over frequency.

The turn-over frequency appears in the order as follows:

BAS:

198Hz ÷250Hz ÷314Hz* ÷396Hz

TRE:

2.00kHz ÷3.17kHz* ÷4.00kHz ÷5.03kHz*

*Factory-set frequency

4 Press and hold SOUND for two seconds.

The normal display mode appears.

EN

DSP

DSP 57