You may be experiencing dynamic compression. The louder the system the more the sound may tend to smear. On better systems, short of running out of amplifier power the sound will just get louder.
Subjectively, too much bass response will tend to make a system sound slower. You may consider adjusting speake location to get a better balance.
Subjectively, too much bass response will tend to make a system sound slower. You may consider adjusting speake location to get a better balance.