Originally Posted by dscottj
Fast forward to my SC-57. Now, I see there are 3 "modes" ... Symmetrical, All Channel, and whatever that 3rd one is. "Self," I says, "that's STEREO, 5-Channel movie, and 5-Channel TV." Nothing I read disabused me of that notion, and that's what I've gone with ever since.
wow, you're thinking of me
Symmetry - speakers are EQ'd to the target curve as left-right pairs
All Channels Adjust - each speaker is independently EQ'd to the target curve
Front Aligned - the fronts (STEREO) are not EQ'd at all, and all the rest are EQ'd to match the non-EQ'd fronts. this is for those that like their fronts sound just the way they are with no EQ applied so all the rest get matched to them.
you are free to use any of them on any source depending on how you want it to sound to your ears, not specifically meant for movies vs music.
now, if you want to identify the presets as how you like to use them, you can rename them - for example you might rename Symmetry as Movie if you prefer to use for...movies. I think one of the alternate names may be Music, another is Couch or some such (I don't remember them all & I'm too lazy now to check
there's explanations in the manual & all I've done is paraphrase it plus 10+ yrs experience with 3 Elites
and I've looked at the readouts in the PC software so I can 100% guarantee you that how KC & I describe them is exactly what the data shows. in Symmetry, the settings are identical for each left-right opposing pair (left front = right front, left surround = right surround, etc). and All Ch Adj really does show each speaker may have different settings between the left & right fronts, surrounds, etc. Front Aligned data shows nothing done to the fronts.
I do understand why you might think symmetry meant stereo because it is measuring the speakers as stereo pairs. maybe this is what you meant, but it's not a 2 channel stereo EQ per se.
in my own setup, I tended to use Symmetry for movies and All Ch Adj for 5.1 music. I can't give you a scientific
reason for it, but anymore, I just Symmetry for everything, because I'm the King of the Media Room and my Iron Throne (Game of Thrones
) is dead center in the home theater seats so my speakers are all...symmetrical to me anyway
in my setup, the differences between Symm & All Ch Adj is not significant anyway because each opposing pair of speakers is perfectly set up to be within a fraction inch the same distance from the main listening position - IOW, left front & right front are both 10' 1/2", the side surrounds are both ~ 6 ft. etc.
if a room wasn't conducive to that kind of speaker alignment due to no wall, open doorways, adjoining room, then I would expect Symm & ACADj to be lot more different because the 2 sides are different acoustically.Edited by ss9001 - 8/30/13 at 3:06am