I use the Altec Lansing 621 satellites with my 9000 Pro. I also use the subwoofer (at a very low volume however ... I have a condo and my homeowner's association would be on my case big time if I cranked the thing up). But Uncle Dave is right, you can't really tell where the bass is coming from. And it adds a lot of body to the sound. At least to my ears.

Blessings,
ev