As fine as my system now sounds with the EVS enhancers on the speaker terminals, I am not completely satisfied with the somewhat diffuse imaging between the speakers. Yes, things are way wide and deep and quiet, but the center image between the speakers themselves is really not as focused as before.
So I did a little reading at Audiogon and AC and found others have been saying the same thing. Here's what I tried last night and the results I got (remember I bi-wire).
(1) I took off the tweeter GE and left the bass/mid GE in place on the speaker - this was better mage wise, but didn't quite sound continuous top to bottom. Something is off.
(2) I put the removed GE on the amp side, leaving the bass/mid GE on the speaker - same result, not continuous top to bottom.
(3) I removed the speaker side GE on the bass/mid and left the amp side on - this is better. There is a focused center image again. The width and depth may not be quite what they were before but that hint of some kind of phase anomaly is gone.
(4) I put the other GE on the + terminal of the amp, not there is one on both the + and - amp side (remember, my amp is balanced, so YMMV) - it didn't seem to hurt anything from #3, but I can't be certain it helped anything either.
After doing this test the top end was bright and forward, as I experienced whenever moving these things around, but it did tame back down after an hour or so of playing music through them.
Bottom line: I think I'm goign to leave them on the amp side. I think this is better for me than the speaker terminal connections that seem to cause a loss of center fill focus while expanding the soundstage.
Enjoy,
Bob