If your stereo is the same as mine ('04 Accord sedan), try setting the bass
at 3 and the treble at 3 and the fader on C. I love mine, it's the best
stereo I've ever had (I find the bass pretty rich and smooth, and that's
important to be because I'm a bass player), and I consider myself somewhat
of an audiophile. Others' tastes are obviously quite different. I may be
much older than the complainers, so that may be a factor.
Yes, the rear speakers look like cheap pieces of crap, but they do the job
very well, IMO. In my '97 Civic sedan I had a pretty decent Kenwood with
Polk speakers in the rear and expensive Boston Acoustics in the front. Sure,
it was far better than that Civic stock system. But this stock system in the
'04 Accord is far better than that.