Originally Posted by gsantosoliver
Hi. Yes, I got that. So, in my case would I have bass coming out of the LCRS from 60Hz + bass from LCRS and the entire LFE coming out of the sub?
Yes. Just to err on the side of redundancy, bass assigned to your front and surround speakers will come out of them above 60 Hz, but no LFE will come out of anything but the sub, which is how it should be. You will have the entire LFE (up to the point at which you set the LPF for LFE, usually 120 Hz) coming out of the subwoofer. Also coming out of the subwoofer, mixed in
with the LFE will be bass below
60 Hz that would have come out of your LCRS if you didn't
have a subwoofer. This will include bass from soundtrack music. Sound effects that don't qualify
as LFE, because they are too high in pitch, may have been put on the LCRS such as most
of the frequency range of breaking glass, wind chimes, non-political birds tweeting, and even a dog barking way off to the left.
The true, bass management, crossovers can, and probably should, be set individually for each class of speaker, in most AVRs. Select "Crossover Advanced," or some such. For instance, I'm looking at my screen right now, and I see that I have selected 80Hz for the L & R front (letting the sub do the heavy lifting below 80Hz). I picked 40 Hz for the center for an idiosyncratic reason, i.e., I have my sub turned pretty far up (done AFTER running Audyssey, which is necessary if it is to be boosted) and with an 80 Hz crossover, it pushes the bass end of voices through the highly boosted sub creating a high bass shelf in the dialogue that comes through the center, making throaty voiced women sound like men, and Sam Elliot sound like the Voice of Zeus. Audyssey told me that in my room and in its position my massive center (by itself) was good down to 40 Hz, so, to keep voices out of the sub, I set the center crossover at 40 Hz. It works fine. My surrounds have an F3 of about 50 Hz, so I set them for 80 Hz.
Many sources in our environment have a very wide frequency response, wider by far than I realized when I was as a fledgling audiophile. Their sound will come out of all your speakers (including subs) simultaneously, but with different parts of the frequency curve coming out of different speakers, with some overlap, at radically different SPLs. Here, for instance, is the kick drum:
[EDIT: Sorry, the graph won't print here. It is there in the draft copy, but disappears when I save. Suffice it to say that the kick drum, considered to be a "bass" instrument, produces frequencies up to 16K Hz, as loud as 110 dB, but very
briefly -- a few milliseconds long.]