High end sub for big room. Suggestions?

I also have a pair of the Entec subs mentioned above. Use them with Wilson WATTs. They are certainly better than the Puppies.

However, for movies and really deep loud bass I wanted even more. I've chosen the Stryke HE15, which by all accounts is up there with the big Krell and Wilson units.

Here is link to more information:

http://www.digitaltheater.com/cfb/index.cfm?fuseaction=thread&CFB=1&TID=97226&StartRow=26

You may find the price pleasantly surprising.

Entec is the way to go.

Krell makes probably the best subwoofer ever. But that is to be expected!

You asked about a HIGH END sub - not just the big bang.
Go for the REVEL SUB 15 (with REVEL LE-1 crossover/bass amp).
The latter can drive two SUB 15s at 1000W output. They really can shake your house AND they are HIGH END! Good luck!

Depending on how you are going to use it and how much you want to spend. If for movies get a 18 in sub the bag end is modest in price and a good peformer. The Velodine 18 is good but is twice the price.