So I reread the OP, and while I was under the impression that this was more for music, now I’m not sure. It says cinema room, and then later new screen.
In any case, I agree with Ryan to ported, and stand by my statement as such.
Considering location, I would look here.
The XTZ Cinema SUB 3X12 is an uncompromising subwoofer built for maximum home cinema impact. With three 12 ultra-long-stroke drivers and three independent Claridy Class-D amps it delivers up to 123 dB of clean deep bass with extension down to 16 Hz (-3 dB). Offering low distortion massive...
www.xtzsound.eu
SVS makes fine subwoofers to be sure. But if you have any issues, dealing directly with a manufacturer can be a lot better than dealing with a retailer.