Get this to tell you how stupid I was. I hooked up the Def's to same existing cables. I ran a couple of test tones for placement purposes. I noticed the phasing test one sounded stereo. Come to find out, one of the speakers was wired backwards on back of my receiver. What happened is that a long while back (over a year), wife pulled shelf out to clean and yanked out the right cable. She hooked them back up (of course backwards). Never said anything until I just asked. Everything normal now. And they sounded great backwards, Now they are hooked corrected, I cannot tell much difference with music, only test tone where phase is correct. Always double check things