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In Reply to: RE: Magnepan 3.7i Phasing posted by Satie on August 30, 2016 at 20:36:38
I have DIY absorbers behind the speakers and opposite the right speaker (short side) as well as at the corners on the short side. This seems to help some. There is a peak in the bass around 40-45 hz which roughly corresponds to the long side distance of 23'. Since 40 hz notes are fairly rare in acoustic music - what I mostly listen to (jazz, classical) - it is not a real issue.
Now when I think about it I have never tried putting the sub on the left side (open side). I'll have to do that this afternoon to see if that peak resolves -- or buy another sub when the boss is not looking :).
I married the perfect woman. The downside is everything that goes wrong is my fault.
Follow Ups:
That is a good idea on the bass balancing front.
I don't think the absorption is going to be effective in curbing bass discrepancies that well. You need bass traps and those rarely do more than a couple db's worth. The absorption I was suggesting was to balance the overall lower mid to bass output if you can't get it balanced out with placement asymmetry complementing the boundary loading asymmetry.
I agree with you about the panels and deep bass but they do seem to reduce harmonics of the ~40 Hz in the mid-bass and higher frequencies. I did not do waterfalls of the separate speakers but I believe the fs where similar. I didn't get around to moving the sub but maybe today -- nice being retired as there is always tomorrow.
I married the perfect woman. The downside is everything that goes wrong is my fault.
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