Velodyne ULD-18 or Audio PHysic Rhea sub....

Disclaimer: I am a Talon dealer.

Mythtrip...Velodyne makes sufficient theater subs, but that is about it. They are one of the slowest and most "non-musical" subs my dad and I have ever heard, IMHO (I am sure there are those that will disagree with that statement). If you have speakers that have even the slightest capability to portray fast transient changes (which the Virgo's do), then avoid Velodyne. As far as subs that excel at both theater AND music, you should look at the products from Talon, REL, and Aerial (in that order).

Best Regards...Mike - Father & Son Audio

The Velodyne HGS series have the lowest distortion and flattest frequency response of any subwoofer. With the servo feedback system they react and decay immediately. It is the most accurate subwoofer for music or theater. Whether one likes accurate sound or not is another issue. The Velodyne Servos play the signal they receive more accurately than any other subwoofer. You certainly should audition the various HGS models and decide for yourself. In regard to the older ULD-18, the new HGS-18 has more output, deeper extension and less distortion. It is my reference.
Take Care,
Curt

Curt,

Please, no offense intended but stating that ANY Velodyne sub has the lowest distortion and flattest response of any sub is laughable! Of course, if all I had ever heard was Velodyne, I also would say it was impressive. But, have you ever heard a Talon or REL sub before? If yes and you still feel the way you do, then I am at a loss. If not, you should (after which I don't think Velodyne would be your reference anymore). Servo-sub designs are simply an excuse for lazy design work! Ok, I have said my peace ;-)

Best Regards...Mike - Father & Son Audio

Mike,
I've been in Audio over fifty years and have owned or listened to just about every sub out there. I've heard all the Rel's and yes the Talon and the Aerial. I wish you'd try to design a servo feedback speaker and see the difficulties involved. Very few of the top audio engineers have been successful. That's why many subwoofer designers use Velodyne as their reference in designing their own product. We can all chose what we like or don't like but facts are facts. I suggested Mythtrip audition for himself and then decide. I stand by that.
BTW I stated the Velodyne HGS series (not any Velodyne) had the lowest distortion and that's a fact.
Regards,
Curt