I've had a 2004 S w/ Harmon Kardon package for 6 months. Top volume doesn't sound that loud to me. It is somewhat loud but not REAL Loud. Sound familiar? Or am I expecting too much? Thanks for your opinions...

 

Try setting both the BASS and TREBLE settings to the middle "flat" position and seeing if that increases your maximum volume significantly. The H/K stereo automatically reduces the maximum volume any time either the bass or treble settings are moved off-center, to ensure that you don't overdrive the speakers.

I find that the volume reduction is pretty drastic unless I keep the bass & treble within one or two notches of the middle position.