First, the automatic volume control on the radio is NOT speed sensitive. It's traffic noise sensitive. Had mine increased but don't really notice much of a difference. Maybe I need it cranked all the way up.
Secondly, the four "speakers" behind the driver are NOT "loud speakers" but are tweeters, so the volume will not be very loud.
Secondly, the four "speakers" behind the driver are NOT "loud speakers" but are tweeters, so the volume will not be very loud.