I think I want to add a powered sub to my system. I know very little about them. I have a modest HT including a Pioneer digital signal processor and Bose Acoustimass 6 speakers with a passive sub. I found out that Bose does not offer a matching powered sub. I'm looking for suggestions and hopefully in the $200-$300 range. Edit - Wow, I didn't know Bose was so bad. Just shows you that tin ears like me can enjoy low end stuff. It must be obvious by my hardware choices that I am budgeted and not in the market for high end items.