Summary: Have been testing this across a wide range of music for the last 4 hours. Set up was relatively straightforward. Using with Monitor Audio BX2 speakers and an Onkyo A9030 amp. It looks fantastic, but never mind that, this thing is the atom bomb!!! I can't believe how much it has enhanced my system.
Summary: As part of a Dolby Pro-Logic system this is superb. Phase, output levels and db threshold can be adjusted. You can FEEL the output! One reviewer said it lacked depth - not sure what that means for a sub woofer as the sound is omni-directional - probably using it for a bass guitar!!
Summary: Had been looking for woofer for quite a while that would meet my wife's stringent requirements on style, size and anonymity in the lounge. Problem was that nothing that could deliver the depth I wanted would fit that.