I think foreverhifi offers some very good advice. I have listened to the Watchdog, and it is an excellent subwoofer, but how much better is it at $10k vs a very good $3k sub. You could spend less and buy 2 sub woofers. Two are much easier to place and get a flat response. The other aspect is the Revel uses a parametric EQ, similar to our PARC design. This can really help bass mode problems with subs, and large speakers and allows proper speaker room integration very easily. Using subs now is now very common as their designs have gone from being the HT booming thing to something that really adds that last octave in a musical way. But it's integration with the rest of the system and the room is what is key to achieving that musical quality as well as the HT boom--even in HT it should come across as natural and not just a motor box in the corner. There are two things I would direct you to that might be helpful. Both on our website, www.rivesaudio.com Go to the listening room. In the speaker section there is a download for speaker placement, and it goes into subwoofer placement and 2 vs 1 subwoofer. The other area is to click on the modes, and this describes the bass modes that can be caused by any low frequency interaction with the room. As stated, we design a PARC that compensates for this problem, but Revel has wisely incorporated this same type of technology in their B-15 subwoofer. I don't think it's as sophisticated as what we have done, but it is cost effective and very useful for sub integration. (Yes, our PARC can be used for other subwoofers as well).
Which sub would you choose?
I am considering buying either two Audio Physic Minos or a single Wilson Audio Watchdog. My room is 15 by 20 with 10 ft. ceilings. I use the system equally for two channel and HT. My equipment is as follows. CB2 processor, Faroudja video processor, Front left and right and center speakers are Kharma 3.2 floor standing monmitors, the surrounds and rears are Aerial Acoustics LR3 and SR3. The front projector is a Sony G70. I have heard great things about both subs. Which would work best for me?