HiFi Schematic

Fig 1: HiFi Schematic

Courtesy of BMW OF NORTH AMERICA, INC.

The HiFi audio system features a 6 channel analogue amplifier that is connected directly to the 4 speaker outputs of the radio. The loudspeakers are connected to the 6 HiFi amplifier out channels. The tweeters are protected from overload by capacitors in the supply lead and connected in parallel to the broadband speakers.

All sound controlling functions such as volume, bass, treble, fader, and GAL are performed in the radio.