Speaker System, Basic Function - GF82.62-P-9900A
Model All (CAR)
Overview
This document contains information on:
- Function of the speaker system
- Limited actuation of the speakers
- Actuation of the speakers during an emergency call
- Support of communication in the vehicle (dependent on model and equipment installed)
- Sound areas (dependent on model and equipment installed)
General
The task of the speaker system is to output the audio information from various systems via the speakers in the vehicle. Sources for the audio information can be the radio, media or the telephone, for example. Depending on the equipment installed, the speaker system is controlled either by the multimedia system control or by the sound system amplifier control unit.
Function of the speaker system
Each source converts the audio information into analog audio signals. Then an amplifier amplifies the analog audio signals and transmits them to the speakers. Depending on the equipment installed, the amplifier is either integrated in the multimedia system control or is installed in the vehicle as an independent control unit.
A woofer amplifier or subwoofer amplifier option is used here. This also amplifies the analog audio signals to the woofer or subwoofer.
Each speaker is optimized for its tasks, e.g. according to the various frequency ranges. The speakers installed differ in terms of quality, number and installation location depending on the model and equipment level.
The user can adjust the volume and tone of the speaker system using the multimedia system. When an emergency call is triggered, the telematics services control unit mutes the audio sources.
Limited actuation of the speakers
During voice output, the amplifiers primarily actuate the speakers in the front area of the vehicle.
Actuation of the speakers during an emergency call
For the emergency call system, the center instrument panel speaker is connected directly to the telematics services control unit. This means that the function of the emergency call is assured independently of the speaker system.
In addition, the telematics services control unit transmits a signal with the request for the mute function to the sound system amplifier control unit or to the multimedia system control.
Support of communication in the vehicle (dependent on model and equipment installed)
In some vehicles entertainment to all the seat rows can be made easier with acoustic support. To achieve this, the speaker system also outputs the words spoken in one seat row in the speakers assigned to the other seat row.
In the basic variant, the hands-free system microphones records what is spoken in the front seats and the speakers in the rear emit the signals too. This means that what is spoken in the first seat row can also be heard better in the second seat row. With the maximum equipment, additional microphones are fitted in the rear, so that communication between the seat rows can be supported in both directions by the speaker system.
The function is switched on and off using the multimedia system control. Different volume levels can also be selected to support communication.
Sound areas (dependent on model and equipment installed)
By using speakers fitted close to the ear it is possible to achieve greater seat position-specific individualization of the volume and tone settings. This enables, e.g. more privacy and less disturbance for co-passengers when the hands-free system is used.
| Function schematics | |||
| Function schematic for actuating speakers | Model 118, 177 except engine 139; model 243, 247 | PE82.62-P-2501-97A | |
| Model 118, 177 with engine 139 | PE82.62-P-2501-97D | ||
| Model 167 | PE82.62-P-2501-97B | ||
| Model 206 | PE82.62-P-2501-97H | ||
| Model 213, 238, 257 as of model year 2021 | PE82.62-P-2501-97E | ||
| Model 223 | PE82.62-P-2501-97G | ||
| Model 232 | PE82.62-P-2501-97J | ||
| Model 290 as of model year 2021 except code 811 (High-End sound system) except code ME10 (Hybrid vehicle (plug-in, PHEV)) Model 290 as of model year 2021 with code 811 (High-End sound system) | PE82.62-P-2501-97F | ||
| Model 293 | PE82.62-P-2501-97C | ||
| Model 295, 297 | PE82.62-P-2501-97I | ||
| Further basic functions | |||
| Volume adjustment to noise level, basic function | GF82.60-P-1000A | ||
| Engine sound, basic function | Vehicles with engine sound via speakers | GF82.60-P-9901A | |
| Radio mode, basic function | GF82.60-P-9902A | ||
| Media mode, basic function | GF82.60-P-9903A | ||
| TV mode, basic function | Model all (CAR) with code 865 (digital TV) | GF82.60-P-9904A | |
| Active noise compensation, basic function | GF82.62-P-9902A | ||
| Telephone, basic function | GF82.70-P-9902A | ||
| Multimedia system control, basic function | GF82.85-P-9904A | ||
| Emergency call system, basic function | Model all (CAR) with code 362 (HERMES communications module LTE) Model all (CAR) with code 383 (RAMSES ENTRY communication module) Model all (CAR) with code 384 (RAMSES HIGH communication module) |
GF82.95-P-9900A | |
| Sound system amplifier control unit, basic function | GF82.62-P-9890A | ||
| Subwoofer amplifier, basic function | Model all (CAR) with code 811 (High-End sound system) Model all (CAR) with code 853 ("Midline" sound system) except code MEF3 (AMG Entry variant with L battery + 4MATIC) |
GF82.62-P-9891A |