Originally Posted by jer181
I have and it doesn't improve the low end. I don't get it, I have read so many reviews and talked with so many people on forums who have these speakers and they say that they just pound!!! I don't hear that what so ever.
I guess its figuring how to treat that room now or get a good sub.
if you used Pure Direct on some 2 ch source (no sub) then it's not your speakers and not the receiver calibration. we've said get a sub for "pounding" bass. your KEF Q900's are:
Frequency range (-6dB) 35Hz - 45kHz
Frequency response (±3dB) 40Hz - 28kHz
while it's very good bass response, this is not subwoofer territory by any stretch. look at the 40 Hz spec which is 3 dB down from the avg level. very respectable. so if you're not getting any appreciable bass, then you are probably sitting in a bass null where you expect to hear what most call "bass", the 60 Hz region. the only cure for that is move your seat.
have you done any of the things, I and some others suggested? walked around your room, move your head a ft or 2 forward or backwards while playing a test tone or strong bass line and see if it gets stronger?
and yes, you need a subwoofer to duplicate the bass you hear in a sound effects laden movie.
the only speakers I ever owned that had huge bass output were Acoustic Research towers I bought in the 80's, which had 2 - 12 in true woofers
, 1 on each side. no passive radiators to enhance the bass, like your KEF's but real subwoofer sized woofers
those were truly capable of reaching to 20 hz region but in every other aspect, their sound sucked, the worst speakers I ever owned - no depth, no imaging, and harsh highs, they couldn't hold a candle to my 1st Magnepans @ $500 that had much less bass.
if you are truly interested in having big bass for home theater, a good sub is mandatory. not some wimpy 8" job, capable of 30 hz or so, you need to get something that gets to at least mid-20's and preferably 20Hz (or lower). they don't come cheap but there are excellent choices, Velodyne, Fathom are good choices for sealed cabinet, servo controlled designs and are in the high price end. SVS, HSU Research, Rhythmic are excellent choices that won't break the bank. personally, I'd take a good look at SVS. they have some very capable subs.
I don't know exactly why your setup is under-performing, I don't think anyone here can tell you why...we can offer ideas and that's it.
but the 1st thing I would do is >>> MOVE your head and/or MOVE the KEF's! Try moving them further away from the front wall. move 'em out 3-5 ft and listen again. people who place their speakers right against the front wall so they look nice with the TV may be compromising their performance. ANY speaker sounds better moved away from the front wall - they'll image better, have more soundstage depth and possibly have better bass response. if you have yours against the wall, try moving them out at least several feet, even if they're in front of the plane of the TV. you have nothing to lose and they might sound better.
and I have to ask, are you sure you have the bi-amp knob turned the right way so that you haven't disabled the woofer?
and remember, because you have no sub, the Pioneer should have set them to Large and unless you have a center or surrounds, you don't set the crossover, it should be grayed out. the fronts should be getting a full-range signal. but Pure Direct defeats any bass mgmt anyway so that's the true test of what your fronts can do by themselves.Edited by ss9001 - 11/6/13 at 3:22pm