I know it's generally frowned upon to adjust speaker distances post-Audyssey, but last night I was going through the sub distance tweak (for the ump-teenth time) and was trying to get a good compromise between subs+CC and subs+FL (or FR) and thought I'd just see what happened if I adjusted the Front L/R speaker distances. I was surprised by the results.
This graph compares the before and after for the front right speaker. It made a drastic difference in the FR!
I wasn't able to get much of a change on the front left speaker:
And this compares the subs+CC (red) and subs+FL/R (blue). I've got almost the exact same response, which I was never able to get using the sub distance tweak alone.
I did some listening afterwards and couldn't detect anything being way out of whack. As a matter of fact, I think it sounds better than ever.
Will I be branded a heretic? Is this such a horrible thing to do??
Here is a drawing of my room. Audyssey first mic postition was dead center of MLP1 (where my head would be) and yes, it is off-center by about a foot. I have new subs now, both in the rear corners, so disregard the XS15s in the drawing.
I only got to listen for about an hour last night after I did this, but I swear my center sounds more intelligible now (along with a few other improvements, mostly in the bass).
Here are the changes I made to the speaker distance settings:
FL - from 18.2' to 16.2'
FR - from 17.6' to 12.6'
Audyssey's distances are pretty much spot on to the actual distances BTW.
Maybe it has something to do with the irregular acoustic properties of using corner-horns...?