BMW Radio and Information Systems Bedienungsanleitung PDF herunterladen (Seite 23)

Communications

System Operation Top-HiFi

The Top-HiFi audio system features a 10-channel analogue amplifier with DSP technology

as used in the current vehicles. The Top-HiFi amplifier is controlled with a constant audio

signal via the two analogue output channels of the radio. In addition, the Top-HiFi amplifier

features a digital input for the CD changer. The speakers are connected to the 10 output

channels.

The Top-HiFi audio system has following output ratings:

- Medium-range and high-range speakers: 6x20 W

- Low-range speakers: 2x40 W

- Carver low-range speakers: 2x100 W

Top-HiFi with radio Business-CD, or CID radio

Depending on the type of radio installed, programmed sound settings can be selected or

freely programmed. In connection with the radio Business-CD, one of the following 3 pro-

grammed sound settings can be selected in the "Tone"

(sounds) menu:

• Jazz

• Hall

• Cathedral

The radio CID radio with the central information display offers the following features:

• 3 preset menus (see above)

• 3 freely programmable menus

In the case of the CID radio, the overall acoustics can be set individually by means of a 7-

band graphic equalizer.

Principle of Operation

All audio systems are controlled via the radio. The differences between the systems are in

the control of the amplifiers. The HiFi and Top-HiFi amplifiers do not feature direct control

functions.

HiFi amplifier

The HiFi amplifier is controlled via the radio.

The required settings are selected in the radio and output via 4 radio outputs to the ampli-

fier. The amplifier amplifies the settings and distributes them over 10 channels.

No variable matching takes place in the HiFi amplifier. Vehicle-specific equalizing is inte-

grated in the HiFi amplifier.

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BMW Radio and Information Systems Bedienungsanleitung Seite 23