So what sub are you using for your Home theater?

If you want the deepest, lowest, non boomy fast bass with realistic stereo sound then look into the TacT W410 corner subwoofer. This is the best of the best, but it has no amplifier (I'm using a pair of Bryston 7B-ST amps), and it has no crossover (I'm using a Marchand active crossover). Each subwoofer has four 10 inch drivers and easily goes down to 12Hz. Fair warning... tie down everything in the room. TacT has a smaller version with two 10 inch drivers and goes down to 16Hz. Keep in mind that you will need a 47 foot wall to fully develop the 12Hz, and a 35 foot wall to fully develop the 16Hz. Each W410 costs $4,000 and the half sized subwoofers cost $2,000. You can build the enclosures yourself with plans they provide. Each driver is about $125. You can really get a good deal by getting one of their prototypes. I got the W410 sub prototype for $700 instead of the usual $4,000. The catch is that it's black with no fancy wood.

Rel Stadium III at this time, but if I had the money I would go with the Rel Studio III. I don't know of a deeper, faster, more accurate sub. The Studio III has 2 10" Volt drivers and goes down to 9Hz. You may have to double dry wall the room for it to survive. The Stentor III would also be well worth a look. The Stentor III goes down to 11Hz and the Stadium III down to 12Hz. These are very musical subs as well with versatile hook up options The Stadium III retails for $3000, Stentor III $5000 and the Studio III is $9000. Forgot to mention that the finish is beatiful on these subs. I love mine and the reason being is that the bass is as it should be and does not distract from the movie. It is quick, tight, deep and accurate. www.rel.net

SVS Ultra with Samson S1000. Goes deep, is quick and accurate. Everyone who has heard this sub in my house has left in awe of the impact this speaker dishes out. You have to experience it to believe. My room is only 12'x18' but one of the sides is completely open to the rest of the house which is 50' long. Check out all the experiences of owners at www.hometheaterforum.com. You will be hard press to find a better sub for ht anywhere especially for the money.