Hi all, I finally managed to setup my system for flat response. I have a huge hall (it must be around 11 or 12 meters high, 10 meters long, 13 meters high, open all around and with no parallel walls, so it was easy). I used a pair of MartinLogan Scenarios, a pair of DefTech ProSub 100's, and lots of time for moving the speakers, running sine wave tests and recording the results with my SPL meter. I elected to run the main speakers full-range, with the subs providing the lower end. The biggest deviation I have is around -4dB's at 100Hz. I'd say it's pretty good. And boring. Flat frequency response has to be the most boring thing I've ever heard! (no, I'm not trolling). It reminds me of my Etymotic Research ER-4S earphones - the sound is, to put it mildly, "out of this world", yet it's so unengaging and unergetic as to be dull and lifeless. I'm confused, then - why do people buy megawatt, 18" subs when flat frequency response at sane (around 105 dB's) listening levels can be had with small subs? Am I missing something? Should I *NOT* be aiming for flat frequency response? Whenever I switched on the "Phase correct loudness" button on my amp, I liked a lot more the sound. Yet... Once I loaded my MoFi discs (Queen's "The Game", Alan Parsons "Tales of Mistery and Imagination", Jean Michel Jarre's "Oxygen" and "Equinoxe") my perception changed. A lot. Those discs sounded PERFECT. The bass mix was simply perfect. The rest of the discs sound completely anemic. Which makes me think something else. Maybe engineers simply don't aim for a flat frequency response environment - yet the audiophile labels do. Now - what should I do?!? I finally manage to get flat frequency response, yet now I discover *maybe* this is useless, because of how music is mixed! I'm confused.