i was talking to a dude about these speakers the urei 813c's. (<--- that's actually just an 813, the c's have jbl drivers, but close enough to get the point) he was saying that when he had them paired w/ a mcintosh 2500 power amp, that he did something (forget what he said) to the amp's transformer, or something that allowed that amp to push all it's wattage as opposed to just the 500 per channel it does unmodified. anyway, he was saying that he achieved more 'clean' volume or 'increased headroom, by using an eq to pull back about 5db under 100hz, and modifying his room to be 5db hotter in this range, he was able to use make the amp work less hard because those frequencies take alot of power, and essentially are just distortion of sorts below a certain frequency (think he cited 25hz). So by not making the amp work as hard in this range, it lended more power for the rest of the frequency range, giving him more clean power, and inevitably headroom, because he didn't have to work the amp as hard to get a certain volume level. he went into a lot more detail, some of which i forgot already, and some i just didn't understand. Does this make sense to anyone else? this dude is pretty crazy, but usually very on point when it comes to audio. just wondering what others though about this concept, and if if holds any weight, or if it's more of a case of 'better cuz i did it', which wouldn't shock me. either way, can't wait to hear these speakers in a a few weeks, i've been told they aren't very accurate by todays standards of 'big guys', but they look like they'll be at least entertaining to listen to. any thoughts on the speakers are welcome as well. cheers!