Audio tuner control unit, component description - GF82.62-P-3132CWS

MODEL 204.0 /2 with CODE (810) Sound system up to Model Year 8

Illustrated on model 204.0

Fig 1: Locating Sound System Amplifier Control Unit (Model 204.0)

Courtesy of MERCEDES-BENZ USA

Location

The sound system amplifier control unit is located on a bracket in the trunk on the left sidewall behind the paneling.

Illustrated on model 204.2

Fig 2: Locating Sound System Amplifier Control Unit (Model 204.2)

Courtesy of MERCEDES-BENZ USA

Location

The sound system amplifier control unit is located in the load compartment on the left sidewall behind the paneling.

Task

The sound system amplifier control unit is connected to the Media Oriented System Transport (MOST) and amplifies the audio signals. The sound system amplifier control unit manages all the audio sources integrated into the vehicle and processes their audio signals. The audio signals are output over the following speakers:

Left front door speaker (H4/1)
Right front door speaker (H4/2)
Left rear door speaker (H4/3)
Right rear door speaker (H4/4)
Center instrument panel speaker (H4/27)
Bass speaker (H4/29)
Left rear surround speaker (H4/54)
Right rear surround speaker (H4/57)

These are discretely connected to the sound system amplifier control unit. The sound system amplifier control unit increases and reduces the output level of the audio signals (Dynamic Range Optimization (DRO)) depending on the noise level in the vehicle interior. The noise level in the interior compartment is measured via the sound system microphone (B25/6) discretely connected to the sound system amplifier control unit.