Randy,
I am just starting to understand that LFE is a separate channel. So I believe When my 1909 sets the subs LFE at 80Hz, that dedicated channel sends what ever LFE content the source BD (HD Cable?) puts out for a given scene/ action on screen. You guys clarify if I don't have the next part correct. All frequencies for each channel below it's individually set x-over (meaning full range from the x-over freq. and down) will be sent to the sub, in addition to the LFE signal being sent independently to the sub when ever an LFE signal is present.

So in my case I changed my M80's from Large and being auto set to full range (I assume because no x-over was listed), to Small, 80Hz x-over.

After above manual change:
M80 fronts 80Hz
VP150 CC 80Hz
QS8 sides 90Hz
QS8 backs 150Hz
Sub LFE 80Hz

For the non LFE base, the 3 subs will reproduce all frequencies below the 80, 80, 90, 150Hz x-overs respectively.

Any x-over above 80Hz was wigging me out before. But shouldn't my Paradigm Servo 15a produce a very accurate reproduction of the back's low range up to 150Hz?

Dave

"In theory, practice and theory are the same. In practice they're not."