I'm not too sure, but its hard not to go loud, from the few times I've tested when the neighbors are gone, the louder it gets, the better, and cleaner it sounds.[/QUOTE
Congrats on a job well done! Your louder/better situation reminds me of two very different systems/rooms I've had. My KEF 105/3 Reference Series speakers only seemed to come alive at louder volumes no matter what room or positioning even though they were 92dB efficient. In the other case, my Revel Ultimate Salons wouldn't open up at all until after I acoustically treated the entire room.
Anyway, kudos! BTW, what's that device on top of the right speaker?