Thanx Duke for the explaination and suggestions. Do you think there's any merit, though, to the "better imaging" thought by placing the tweeters towards the center? It seems like that was in vogue back in the early 90's by some manufacturers. By the way, if it matters, or is of any interest, the drivers are a pair of the original Fostex Sigma's, (with the "wizzer cone"), and EV T-35 tweeters.