Well, Eclipse's web site has no information on a 4422, a 3640, or a 2010, so it's pretty hard to figure out how you might hook it up at all, much less correctly.

One would assume that the amplifier in some way powers all six speakers, but you say it's a 4/3/2 amp, so it seems like there must be multiple speakers attached to individual amp outputs. So that would sound like the empeg is not attached to some of the amp's inputs.

Does the fader on the empeg work? How about the balance?