Here's one way to think about it... if your mains are below the centerline of the screen put the center above it, and if the mains are above the centerline of the screen put the center below it.

I find that helps to make the overall sound seem to come from the center of the screen...


M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8