Originally Posted by mthomas47
As usual, your recollection and explanation are exactly right! I can't speak for anyone else, but as you may have noted, I "Liked" the post you quoted. The main reason I didn't also remind the OP that it generally isn't advisable to lower crossovers, from wherever an AVR sets them, is that he said that he had recently reread the entire Guide, and that point is already clearly emphasized in the section on crossovers.
FWIW, I agree with both you and him that the practical effect of changing a surround crossover from 90Hz to 80Hz is probably very modest. I would personally be much more reluctant to drop any crossovers for the speakers on my front soundstage, as they carry so much more of the load on a more-or-less continuous basis. And, I would also be more reluctant to reduce crossovers at frequencies below about 80Hz, as below that frequency I think that the strain on speakers can really multiply.
I suspect that he could leave his surround crossover set at 90Hz and never hear any difference from setting it at 80Hz, but I understand that our OCD can be pretty compelling sometimes.
I was kinda hoping you would reply. And I had assumed you had decided to just let it ride in the previous follow up post/Like.
It has taken me 10 years to embrace the crossovers set by Audyssey. I have always fought back and through my Speakers can dig lower than that!!! Thinking I know better
What has taken so long to sink into my obviously thick and scarred Skull, is the secondary benefit of setting higher crossovers. That being wasted energy from the AVR/AMP to try to produce sound at or below the Speakers In Room true F3 point.
It was a long time coming before I realized what I was doing to my system. Knowing now, what I have learned from you and others in here, was a hard lesson in energy management of the AVR/Amp and the Powered Subs. By forcing the AVR to devote power to drive Speakers to FR levels they could not produce at any usable volume was pure wasted headroom. I was essentially pushing power for no resultant gain, stressing my speakers drivers and introducing higher distortion, while at the same time I was throttling back my Subs.
This all started with the "Small" or "Large" settings concept. I bought LARGE Towers by god, and they will be set as LARGE regardless of what this Stupid AVR tells me!
But once I started to look at this from the opposite direction. As a Power management scheme it became abundantly clear I was vastly suboptimizing my systems potential. Now I go to opposite extremes. I set all Speaker crossovers Higher than Audyssey reports. And send all the difficult to reproduce and high power demanding frequencies to the Speakers that are specifically designed to handle that content. My Subs.
The results are many. My AVR runs cooler by 5-7 degrees F, has added headroom for louder passages of Music/Movies. Sounds crystal clear and effortless. Increased enveloping, tighter, cleaner and finer tuned sound from the supporting Speakers. Eliminated/reduced "Bass cancellation" issues I had created by having Subs and Speakers producing the same frequencies. Puts less strain on my Speakers and AVR/Amps. Sends bass to the place it can be reproduced with extreme authority, clarity and energy. The Sound improvement is dramatic/drastic. I simply had to sit back and let my ears tell me instead of my Brain overriding them.
I have seen the light and been forever converted! See even Old Dogs can learn new tricks. Just takes more whacks in the head to penetrate barnacle encrusted Brain Housing Group.
Many thanks to "you" and "your Guide"! It is this specific thread that pushed me to reconsider my thinking and realize I was going about this Bass ackward.