IMAGE PROBLEMS VOCALS OFF CENTER

HOw much closer together?

I'd try moving each speaker inward about 6 inches(total 1'). If there is no change, move'em back. If its better but not perfect try moving them closer an inch at a time. If it works then start moving the further apart again, inch at a time, until you lose the center focus, then move the closer ay an inch and you probably will have as good a central image as you're going to get.

Another thing to try, cross the axis of the speakers in front of the listening position. You will not only reduce side wall reflections but you will also change the 1st and second reflection points of your speakers.

If thru all of this nothing changes, move your listening chair sideways a few inches and forget about the perfect triangle. :-)

To eliminate the room/speakers as causes, what is the image like with earphones?

I don't have a head phone jack.

It first changed when I replaced a set of Type 4 Cables with Nordost. However, I have tried switching the speaker cables back and forth and other types. No change.