Originally Posted by randyc1
Does this mean that someone who just uses the Full Auto MCACC," and is done with it ,... is sending ultra low freq to his mains that could be small monitors ??
could be, if he left them set to Large or if Small, depending on the crossover used. they wouldn't reproduce it but would waste a lot of amp power and % THD distortion would increase trying to.
but this is no different than doing the Symmetry-only MCACC by itself with no phase control, reverb measurement time, or standing wave filters. you still would have to go back to manually change any auto-setting of Large to Small. one way or another, the owner has to make that call to use Large or Small regardless of which MCACC method is used.
none of this is plug & play. despite what we may think it 6should be. you have to use some
basic knowledge of the speakers you own in evaluating settings set by the system.
but would it do any harm? probably not. if the power demand starts increasing past clipping, at some pt the amps' protection circuit would kick in. most likely just not get the optimum results, missing some of the freq's in a particular aggressive LFE track & higher distortion trying to reproduce it.
of course, if someone left typical small satellites at Large, that might be a problem but I doubt MCACC would detect it as bass capable. it's not that quirky. it has always, always, always correctly set my 80Hz capable surrounds & center to Small and rear bookshelves as Small, even though those bookshelves have 50ish Hz capability.
maybe I'm lucky but I've never experienced measurement anomalies like grossly incorrect Small vs Large, out of phase error messages, or poor crossover choice. I've owned 4 top model Pioneer Elites. and this is with planar Magnepan's which are dipolar panels, fronts/surrounds/center. no trip ups. but I also take great care in positioning the mic, aim it correctly, get out of the room when doing measurements. I also have done some room treatment with bass traps in corners, 1st reflection points treated with wall panels, & diffusers placed over a window. my room is rectangular, with good proportions acoustically.
I suspect many new owners are setting up a typical TV/sound system in a living-family room and may not be doing these things, especially if they don't read forums like AVS where we all learn things from each other Edited by ss9001 - 3/3/14 at 9:15am