Anybody have one of these? Expensive but looks to be one heck of a subwoofer.

http://www.selahaudio.com/id69.html

SWEET!!

http://www.selahaudio.com/sitebuildercontent/sitebuilderpictures/citrinefront.jpg

Specifications

Design
Subwoofer

Response
25-75hz (+0/-3db)
(upper frequency adjustable)

Bass Extension
(F10 / -10db)
19hz

Amplifer Power
Included (1000 watts)

Box Alignment
Sealed w/ active equalization

Electronic Crossover?
Yes
12db/octave
50-100hz

Phase Switch?
Yes

Level Control?
Yes

Crossover Bypass Switch?
Yes
Inputs
Line Level (RCA)
LFE (RCA)
High Level (5-way binding posts)
Video Shielded?
No
Shipping Weight
175 lbs.
Standard Veneeers

Price
$1,995 / each

looks nice.

whats with the quick drop in frequency response up top though?

It's purrdy, $2,000 could could be alot more sub though, either 1 or duals. Two Rythmik F15 stacked would have a similar look or the versatility of different placement options.

I believe Rick has come up with a more advanced design based on Aurasound woofers, but not sure on price...

http://www.audiocircle.com/index.php?topic=65151.0
http://www.audiocircle.com/index.php?topic=64182.0

Don't forget that most of his designs are available as kits if you can build your own cabinets.