Originally Posted by pronghorn/az
Audyssey crosses over my Rythmik FV15 at 110hz. Should I be trusting Audyssey or my ears?
DOes your receiver use a single crossover for all speakers?
FWIW, it's the receiver manufacturer's "logic" that sets the crossover points, not Audyssey. The usual concerns from that perspective relate to receivers setting speakers to large when their -3dB point is 40 or 50 Hz. AUdyssey has pretty much always recommended raising crossovers in that case. But that's not what you have going on.
The usual speculation is that the receivers' logic will place the crossover at the first available point above the measured -3dB of the relevant speaker(s). In your situation, that means something is rolling off above 80 Hz (or whatever the next lowest crossover point is. If that's the case, in theory, by lowering the crossover, you will create a bit of a dip in frequency response between where the speaker(s) run out of steam and where the sub picks up. But it might be a very narrow dip, and might be unnoticable on most program material.
SO the answer, IMO, is to experiment with lower corssover settings either using a range of program material or (IMO preferably) using outboard test noise (because your receiver won't bass manage the test tones it generates) to see if you hear a difference. Then you can make an enlightened determination whether lowering the crossovers makes any real impact at all, or choose whichever less-than-perfect alternative you prefer. Totally IMO, if I were hearing significant amounts of musical instruments or movie sound effects as coming from the sub, it would bother me enough to be willing to live with a 3 or 4o dB dip across half an octave or so . . . most likely. I remember when I was first setting up my current system and my sub was corner loaded. I couldn't seem to find any crossover setting that kept the sub from being localizable to me. Something about that particular sub and my particular room, I expect. Moving it to 2/3 down the front wall eliminated that problem and made it so there's little noticeable frequency response difference to me with crossovers at 50, to 80 Hz . . .