looking for advice on budget subwoofer


I have a budget system (rotel ra-932 integrated amp, B&W DM601 speakers, jealous?) and am looking to improve it a bit.

If anyone has advice on a budget subwoofer, or other ways to spend $300 or so to improve the system, I'd be curious to hear.

I just use the system to listen to music (no movies) mostly rock and jazz.

It is in a 12 x 12 room.

many thanks!
davidvan
You need to more specific about what you feel needs improving. I assume you want more bass. For $300 you are not likely to get any sort of sub that will enhance 2 channel. You may look to better speaker and/or interconnect and or power cables - they will generally make a big improvement for a modest investment.
Yes...a sub will improve the sound by providing a foundation to the music. If you cross over appropriately, and the sub has a built in amp, you will free your amp to drive only the mids and highs which will greatly improve with the subs addition. The quality of the sub is not that important - any powered sub will do the job.
http://www.audiogon.com/cgi-bin/cls.pl?homesubw&1319484164&/Yamaha-soavo-900sw-birch-new-a