Pontiac 2005 GTO Uživatelský manuál stáhnout pdf (Strana 147)

Speed-Dependent Volume (SDV)

With SDV, the audio system adjusts automatically to

make up for road or wind noise as you drive.

This feature will never completely compensate for

driving noise. There are other factors such as road

surface, wind noise, windows open, and engine speed

that may alter the interior noise for any given road

speed.

You can select compensation rates between 0 (off)

and 5 (maximum compensation) in the options menu.

See “Options Menu Adjustment” later in this section

to adjust SDV.

Dynamic Distortion Limiting (DDL)

The radio has a feature that limits the amount of

ampliﬁer distortion that you can hear. When this feature

is turned on, it continuously monitors the quality of

the signal to the speakers. When the signal distortion

exceeds the preset limits the radio will automatically limit

or reduce the volume until the distortion is minimized.

Under some circumstances, distortion may be heard for

a very short period of time until the system has taken

the necessary steps to limit it.

The speakers may go off when the volume level is set

at a high or full volume for a long period of time in order

to protect the ampliﬁer from overheating. When the

ampliﬁer cools down, the radio will reset and you will

again hear sound through the speakers.

The main source of distortion in music is the low

frequency bass caused by drums or large instruments.

Music that features very strong bass may trigger the

distortion limiting system and the system will then

reduce the volume to minimize the distortion. Increasing

the bass control or the EQ boost may also result in a

reduced volume level due to the emphasized bass. See

“Setting the Tone (Bass/Treble)” previously in this

section. The DDL can be turned off so that the radio will

deliver a higher volume level, but distortion will also

be increased.

See “Options Menu Adjustment” later in this section to

adjust DDL.

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Pontiac 2005 GTO Uživatelský manuál Strana 147