Yes, I found that too with my T6100's, plenty of treble and overbearing bass, but nothing in between. It felt to me like the speakers and the sub were not of the same system. That's the problem with cheap 5.1 PC speakers. The T20's and 40's will sound a lot better, they will have a much better balance to the sound overall, but obviously they will lack the bass of the 5.1 set. By your comment, you are looking for a better sound quality, and not just something that will hand out bucket loads of bass. If you are willing to sacrifice surround sound, the T20's and 40's might be a good purchase.