What Steve said, except that he is being diplomatic. The question which we cannot answer with absolute certainty is why. Was it the ARC gear, the Q3, or some combination of both? I have a hard time believing it was the ARC gear (tho of course it is possible). Process of elimination for me leaves the speakers. I walked out thinking they simply cannot energize a large room. Tangentially related, for my taste the Q5 also left me wanting in the VLF.
The Q3 had absolutely no issues energizing my 23'6" x 20' room with superbly articulate low bass.