AVS Special Member
Join Date: Nov 2006
Location: Bushnell's Basin, NY
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Why can't the speaker go in front of the windows???
Especially with such a large TV, I suggest shifting the entire LCR set to the left a little so you preserve a symetric angular spacing across the front; left and right speakers the same angle away from the CC, hopefully about 22.5 degrees to each side from the listening position (L/R angle should be 45 degrees, per THX). With tall ceilings, I'd put the speakers at the same height under the screen and mount the screen a little higher, so I could place the speakers correctly.
While this puts the screen to the right of the audio axis, the shift is small compared to the width of the screen, so it won't seem like dialog is coming from off screen unless it actually is...
The AVR's correction routine will adjust speaker distances and speaker frequency response, bit it can't change off-axis behavior (sdurani's point) and it can't change the program sent to each speaker, which sets the location of sounds in the sound field. Set up the right spacings with speakers aimed at the listening position and you'll hear the sound field that the mixing engineer intended.