Setting the equaliser

The acoustic characteristics of the car in- terior affect the quality of the sound repro- duced in your vehicle to a much greater ex- tent than the speakers.

Position, installation and the rear volumes of, for example, the door or rear window shelf all play an important role.

Even the sound produced by well selected and installed speakers can be affected ne- gatively by resonance frequencies in the vehicle interior.

As a result, the bass sounds may be lost or reverberate, the mid-range tones sound too overpowering and music instruments or voices may be distorted or the total sound quality may be completely lifeless.

The overall sound quality can be greatly enhanced if certain frequencies are suppres- sed or boosted.

This car radio has been equipped with a parametric filter. The “LOW EQ” filter can be set from 32 to 500 Hz. In this context, parametric means that it is possible to set the frequency for the filter and either boost or reduce it (+10 to -20 dB) individually.

This parametric filter can be adjusted to very exact settings even without the help of measuring instruments.

The individual steps required to make the- se settings are described in the table.

Notes on making the settings

The following notes are intended as recom- mendations only. They do not necessarily reflect your own personal sound prefe- rences.

We recommend that you use a music CD you are familiar with to make the settings. The CD should include tracks with different instruments and vocals. Purely electronic music is not well suited to serve as a basis for making the settings because the original sounds cannot be determined.

Before you set the equaliser, set bass, treb- le, balance and fader to “0”.

This setting is described in the Quick Refe- rence under A AUD.

Now listen to the CD you have selected.

Evaluate the sound according to your own personal preferences.

Now refer to “Sound impression/problem” in the table and you will find suggestions to eliminate any problems under “What to do”.

Make the settings for bass and the lower mid-range tones with the LOW EQ filter.

The “LOW EQ” filters can be set in the DSC menu:

•Press DSC.

•Press / as often as necessary until “LOW EQ” appears in the display.