Originally Posted by Inspector 24
Good food for thought Luke. Gives me a couple ideas to try some things. The center and surrounds definitely go Small, however my experience has been the best sound comes when the mains are set to Large. Though I may be an anomaly in that I have large speakers capable of response down to the 30hz region and more than enough power to drive them.
However, one problem creeps up with leaving the bass setting to LFE only and having speakers set to Large, when playing back content that does not have the dedicated .1 channel the subwoofer stays inactive, which I'm sure some would say is all the more reason to set everything to small.
One thing I'm not clear on and haven't had the chance to try some stuff with test tones and a meter; when Bass setting is LFE+Main, Main L/R set to Large, and the 'Advanced' crossover is set to 40Hz, do only signals below 40Hz get sent to the sub from the Main L/R?
Why does it sound better to you? Probably more bass from 40hz to 30 hz where your speakers and subs are playing twice the bass, as louder is better and thats a proven fact. Without measuring you are just guessing why you perceive it to be better. You could always turn up the subwoofer or q control...
What Chris Kyriakakis of Audyssey has to say on the subject:
"LFE + Main should not even be an option because it just causes duplication of bass content by sending it to both the sub and any speakers set to Large (Full Range).
A "high ranking" official in a "well-known" AVR company told me that LFE + Main was invented to appease customers that were upset when their speakers were being set to Small. These customers had a complete lack of understanding of what Small means (i.e. turn on bass management and redirect the bass to the subwoofer) and felt... inadequate. LFE + Main allows them to set their speakers to a more manly Large and still have bass management. But it's a compromise that can cause boomy bass if the speaker and subwoofer overlap in the lower frequencies."
"Redirecting the bass to the subwoofer relieves the receiver amplifiers from having to work on reproducing the low frequencies and this greatly improves the headroom. If you happen to be using Audyssey MultEQ for room correction, you will achieve much better low frequency performance because the MultEQ subwoofer filters have 8x higher resolution than the filters in the other channels.
Here is a better rule: All speakers are Small. In today’s complicated AVR lingo that just means: If you have a subwoofer you should always turn bass management on. Always. Even if your receiver clings to the past and automatically sets your speakers to Large."
Three 7" drivers is about equivalent to a single 12" driver in surface area. You have the ability to cross over to two 15" subwoofers in combined ~10 cubic feet on their own dedicated amps built for one thing, producing prodigious bass. Your subwoofers see 8x the eq filters on multi eq xt as the sats. I have dual 8" drivers in my mains seeing 350-450 watts if needed with a claimed +/-6 dB of 35hz. They measure about -6 dB at 40hz in my room. I cross them over at 100hz. Small with a crossover of 40, 60, 80, 100 whatever works best or you like the best would be my recommendation. You can lead a horse to water, but you can't make him drink.
I have derailed enough here, I let you guys get back to discussing these new, nicely priced, high quality subwoofers.