I would like to switch off the automatic volume control by vehicle speed. Is it possible? I installed an aftermarket audio ampfilier using the factory radio with speaker level/RCA level transformer modul. My problem is that the jumping of the system's volume level is too much as the Jag speed is changing.

 

Automatic Volume Control (AVC)

This is a feature which raises the volume
of the radio to overcome road noise as
the vehicle speed increases. To switch
AVC on or off, press the volume knob for
more than two seconds. The current state
will be displayed i.e. AVC ON/AVC OFF.
To toggle ON/OFF momentarily, press the
volume control knob again to change the
state. The AVC level can be adjusted
from 1 to 5 by turning the volume knob
while in AVC ON mode. When AVC is
ON, it is possible to override the
automatic mode by adjusting the volume
manually.