Originally Posted by sivadselim
The LFE channel can contain info as high as 120Hz. You can crossover your individual speaker channels at whatever frequency is appropriate or that you deem preferable. The speaker channels' bass is low-passed completely independently from the LFE channel bass.
But unless you can justify setting it lower for a particular reason, there is really no reason to low-pass the LFE channel, itself, any lower than 120Hz. So, if you have your LPF of LFE set to 80Hz, you are missing the LFE channel info that MIGHT be encoded between 80Hz and 120Hz.
Otherwise, you are not really missing anything in this thread.
FWIW, I'm aware of the range of the LFE being greater than 80Hz but due to issues which surround locatability, measurements of LFE mixes show content to be mostly in the <80Hz range, hence why I posted, "... basically, 0Hz to 80Hz content..."
I'm also aware that speaker channel content is separate from LFE or subwoofer channel content, hence why I posted the comment regarding "managed bass" and the LPF for the other channels being set at <80Hz.
Sorry for any confusion these comments cause anybody as in my comments, I do try to do my best to accurately flesh out my thoughts and remain pithy in the process.
What I seem to be missing, is not understanding why anybody's subwoofers care about anything above 80Hz to 120Hz. After that, the other speaker channels have taken over and in my opinion, conversation about subwoofers and the sub's response to higher frequencies, becomes moot.
In my opinion, bass management and ID subwoofer manufactures has totally changed the face of Home Theater sound, based on what it was just ten or fifteen years ago. Now, one no longer needs big expensive towers like the Klipsch, RF-7 II's. Today, something much smaller will do as long as it's an efficient design to 40Hz with an equally capable center channel.
Today, when speakers are coupled with three subs for smoothness of sound distribution, capable bass management and using DSP's to integrate and EQ a room's acoustics, pretty much, for Home Theater purposes, all decent speakers become capable of quality Home Theater sound reproduction.
The point of the above, I still don't get why folks are worrying about subwoofer's response above 80Hz as today, in the $300.00 and above, all subwoofers are very capable and response is not a worry.
-Edited by BeeMan458 - 5/4/13 at 1:25pm