GF82.60-P-2003GQJ Volume/Tone Adjustments, Function

GF82.60-P-2003GQJ Volume/Tone Adjustments, Function
- with CODE (527) COMAND APS with single DVD drive (with navigation)
- with CODE (498) Japan version

Function requirements
^ C. 30g ON or c. 15R ON
^ Cockpit Management and Data System (COMAND) switched on and audio source in operation

General
All volume and tone settings can be made on the COMAND operating display and controller unit (A40/3). This is performed either by the user or automatically by the speed-dependent volume control (SDV [GAL]). The volume and sound setting function can be conducted as follows:
^ General function sequence for volume adjustment on right multifunction steering wheel button group (S111)
^ Function sequence, general volume adjustment and general, expanded tone settings over control buttons and rotary actuator on COMAND operating, display and controller unit
^ Function sequence for speed-dependent volume control

In addition to the general tone settings such as bass, treble, balance and fader, the COMAND operating, display and controller unit on vehicles with code (810) Sound system also have the "Logic 7" surround sound function.

As of 1.7.09: With audio source "Aux" (via media interface adapter cable (with code (518) Media Interface) or standard aux socket), selection "Standard" and "Boost" is possible under the "Volume" menu. The input level is increased by selecting "Boost".

The volume/tone settings can be made using the following components:
- The + and - buttons for setting specific functions and volume control (S111s1) on the multifunction steering wheel (MFL)
- Using the rotary actuator of the COMAND operating, display and controller unit

Function sequence, general volume setting via right multifunction steering wheel button group
Pressing the + and - buttons for setting specific functions and volume control enables the volume for the desired audio function to be increased or reduced.

The control signals are routed to the COMAND operating, display and controller unit via the following route:
- Steering LIN (LIN E1)
- Steering column tube module (N80)
- Engine compartment CAN (CAN C)
- Instrument cluster (A1)
- Interior CAN (CAN B)

The current tone settings are shown on the display of the COMAND operating, display and controller unit. The volume setting can be carried out separately for each audio source. Predefined settings can be selected and reset to the manufacturer default setting via the system settings.

Function sequence, general volume adjustment and general, expanded tone settings over control buttons and rotary actuator on COMAND operating, display and controller unit
The COMAND operating, display and controller unit allows the volume and tone settings (bass, treble, balance, fader and tone options) to be set manually for each audio source with the rotary actuator. The required tone settings can be made using the "Tone" menu. They can be set separately for each function (e.g. CD, radio reception, traffic announcements). The control signals are read in and evaluated within the COMAND operating, display and controller unit. The desired settings are transferred to the amplifier for sound system (N40/3) via the Media Oriented Transport System (MOST) in vehicles with code (810) Sound system , and vehicles with code (810) Sound system also have the "Logic 7" surround sound option.

If the tone emphasis is changed (balance, fader) the volume relationship between the individual speakers changes relative to each other.

For vehicles without code (810) Sound system, the selected settings are processed internally, amplified and then emitted at the speaker system.

Function sequence for speed-dependent volume control
The speed-dependent volume control can be used to adapt the volume to the noise level in the vehicle interior. In this case, the vehicle speed signal is used as the reference value. This procedure will run automatically. After evaluating the relationship indicator, the audio output is matched to the noise level in the vehicle interior.

The COMAND operating, display and controller unit increases or decreases the output level of the audio signals (GAL) depending on the vehicle speed signal. The vehicle speed signal travels to the COMAND operating, display and controller unit via the following route:
- Instrument cluster
- Interior CAN

On vehicles with code (810) Sound system, the audio signals are output by the COMAND operating, display and controller unit via the MOST to the amplifier for the sound system and from there, over direct lines, at the following speakers:
- Speaker Left front door (H4/5)
- Right front door speaker (H4/6)
- Left rear door speaker (H4/3)
- Right rear door speaker (H4/4)
- Left front door tweeter (H4/33)
- Right front door tweeter (H4/34)
- Left rear door tweeter (H4/35)
- Right rear door tweeter (H4/36)
- Center cockpit speaker (centerfill) (H4/27)
- Left rear surround speaker (H4/54)
- Right rear surround speaker (H4/57)

The audio signal for the subwoofer speaker (H4/29) travels from the COMAND operating, display and controller unit to the sound system amplifier via MOST and from there, over direct lines, to the subwoofer amplifier (N40/9) and then to the subwoofer speaker.

On vehicles without code (810) Sound system, the audio signals are output by the COMAND operating, display and controller unit via direct lines to the following speakers:
- Left front door speaker
- Right front door speaker
- Left rear door speaker
- Right rear door speaker
- Left front door tweeter
- Right front door tweeter
- Left rear door tweeter
- Right rear door tweeter