SVS 12 " sealed subs start around $650. They have a great rep and are outstanding performers on the test bench. The 12" Rythmiks are about $100 more (last I looked), also test very well, and perform beautifully in my own system.
The caveat with subs (for me) is always integration. The odds of successful integration are IME much, much higher when you use digital bass management software like Audyssey (or the equivalent).
That raises two issues:
Are you comfortable with that approach?
Have you budgeted for that approach?
You can replace your preamp with an Audyssey XT 32 (their top version software) enabled pre-pro from one of the mainstream Japanese hifi companies for app. $1500....if you're willing to go that route. If you're not enthusiastic about that idea, HK makes a similarly equipped integrated amp for similar money.
If you prefer the traditional 'Phile's purist high end approach, I'd think twice about adding a subwoofer. Many here will disagree, so, as always, remember
YMMV
IMHO
etc
Marty
