Originally Posted by bwillcox
I simply am going by what I prefer the sound of. When my main speakers have a sufficiently low frequency response (<30Hz is my usual decision point) I will set them to large. I haven't tried measuring any of this (too lazy I guess), just going with what I like.
As I mentioned in an earlier post, why would anyone want to buy large, full-range speakers if you should always cut them off below 80Hz? Maybe we shouldn't...
Just a wild guess,
But are you running expensive L/R towers with large drivers
Perhaps powered by expensive separate amplifiers capable of 200w/ch ???
My L/R speakers are relatively cheap 10 y/o Mission M34i's with a pair of 6.5" drivers ...about $300 (used)
I don't have dedicated separate amplifiers to drive them so I (like many other here) have to rely on the on-board amps
built into the AVR, to power those speakers.
I prefer the tower design for my L/R speakers to get the tweeters to ear level,
(as opposed to sticking a bookshelf speaker on a less visually appealing 3' high spindle)
When the 3050 is driving 7 or 9 channels simultaneously
its not putting out 150w/ch anymore, it's somewhere in the neighborhood of 40w/ch, maybe 50w at best,
Why would I choose to send <80Hz to a pair of $300 towers with 6.5" drivers
When I have several 400w + dedicated subs with 12"/15" drivers placed around the room,
with their own built-in amplifiers that are more than capable of playing <80Hz at much higher SPL
and can be placed anywhere to correct room nulls/peaks as opposed to just front L/R ??
Powered Subs = Less stress on the speakers, less stress on the AVR = no brainer.
Even if I had a set of expensive full range towers, and only a single 12" 400 watt sub
...that sub would likely outperform the towers at <80Hz if those "Large" speakers had to rely on the AVR
for power while still driving all the other 7 channels.
IMHO, setting Front Speakers to Large would require a really good speaker, preferably with its own amp,
and it would be utilized for more of a 50/50 mix of movies and music (preferably 2 ch music with a turntable).
If your speakers can play <80Hz substantially better than your sub,
you have a very good speakers or a real *****ty under-powered sub (maybe both)