FYI Logic 7 Components - Does your volume adjust for speed?
http://mercedes.harmankardon.com/bro.../glk-class.pdf
It says there is speed sensitive volume adjustment (SSVA), but I never noticed it really work.
On my friend's Cobalt SS volume adjustment for speed was very noticable. I didn't know untill now that GLK even had such adjustment.
The "pdf" above states:
Speed-Sensitive Volume Adjustment (SSVA) for optimum audio impression at any time, thanks to continuous adjustment of loudness in response to the speed of the car.
....and this is what I found in a 2005 MB manual since I don't have my manual at the moment.
Automatic volume control:
The automatic volume control feature adjusts the volume depending on:
1) vehicle speed (only in vehicles w/o premium sound system)
or
2) ambient noise inside the vehicle (only in vehicles with premium sound system)
.
The DVC doesn't adjust the volume, but measures background noise (in the vehicle) by a microphone, samples it with the signals from the H/K and adjusts the affected frequencies only, according to the ambient noise.




