Tekton Double Impact phase issues?


Showed a photo of the DI's to one of Agon's most respected members and one of the things he said stuck with me. This member had a feeling that there might be phase issues. I am too new to the hobby to be sure what this might be or how such an issue may sound. Am hoping to travel to Houston for an audition at the dealership and want to make sure I know what to listen for in this matter. Are their particular recordings to use that may be able to test this possible phase problem? Many thanks.
trytone
I know you are a 1 seat kind of guy, but we all move around a little. Some of the worst speakers for this are Sanders’s flat ESL designs. No comb filtering issues, since it is a single panel, but the sweet spot is a 1mm cube. Your neck and shoulders hurt after half an hour from holding your head so rigidly in place. :)

So it’s worth listening for a reasonably comfortable listening window.

Best,

E
The one issue with phase problems, to me anyway, is if I'm sitting in the "sweet spot" and just move my head a few inches left or right, a single vocal or instrument may move several feet in any direction. (usually left or right). That creates a huge break down of the soundstage for me as I find it quite annoying. My latest speakers which are Vandersteens don't have this problem thank goodness....
Tim
Post removed 
@mr_m Exactly!

It's quite easy to hear this problem. I'm curious though, which speakers DID show this issue for you? This reminds me of the old Polk with their cross-feed drivers.

Best,


E