Subwoofer for under $1000-new, used, or DIY


I listen to mostly rock and classical. The sub would be for music only- no HT. I have GMA Europas, a Redgum 120 wpc int. amp and Audio Note tube CD player. I like my system very much, but it could use a little more oomph. My room is small (15x12x10). I've never had a sub before.

I have read about Hsu, ACI, SVS, Sunfire, Rel, Def. Tech., Totem, Titanic, Vandersteen, Rava, lots of DIY models, and a lot of others I can't think of at the moment. Frankly, it's all become a blur.

I am not a "bass freak", but do appreciate the low end of the musical spectrum. I won't say size is no object (smaller would be better), but of course sound quality is more important.

If you've owned or even heard any of the above subs (or any other in the price range) I would really appreciate hearing from you. Any comments or advice from my fellow 'goners (hmm..that didn't sound quite right) would be great. Thanks to all in advance.
xrayz
Here's one to add to your list. It uses 10" high excursion XBL^2 driver (XBL^2 patented by Adire Audio). Here' a link Acoustic Visions MRS-10 . This little guy should fit in your room nicely and it's small enough to add a second unit without space considerations. Just something to confuse you a bit more..LOL!
The Vandersteen 2Wq. It is considered one of the best for music and usually sells for around $750 used. It is not a ported design.
It's one of the best designed subs out there. It certainly isn't a rumble box, uses a a first order passive crossover between your preamp and amp. It is connected by speaker level from the amp.
I'm pretty sure the GMA are first order designs so this sub would fit right in.
I recently had a Definitive Technology SuperCube I in my room for a couple of months. I was using it with my Thiel CS2.3s. It really made the system sound alot better. It has a 10" woofer with two 10" passives and 1500 Watts for $999 (retail $1199). It was about right for my room which is 20' x 14'. You might be able to get by with the SuperCube II which has an 8" woofer with two 8" passives and 1250 Watts. I'm not sure what the price would be. Retail is $899. The only other subwoofer I've tried in my room was a 10" JBL from BestBuy which cost $399. It sounded like crap compared to the quality of my other equipment. The SuberCube really sounded good. Good luck on your search.
For musical bass, Vandersteen 2wq is the only sub you can get for under $1000 (used) that is what you have described. It is not a "Rumble Box" as mentioned above, but perfectly compliments speakers such as mini monitors, true ribbons, or electrostats.

Good luck