Getting over flu bug... Even had to miss the beerfest event tonight. Think I got the center channel issue sorted. The artificial boxiness seems to have been reduced.

I tried a couple things, cant be sure which one was the magic bullet. First, I tightened up the driver and tweeter screws. Got a big quarter turn out of em, so I did all the other speakers too. Why not. Then I put sticky tac between it and the plywood tripod stand I made up. I'm not sure the sticky tac made a big difference, but I do think it may help damp any existing cabinet resonances.

Hopefully tomorrow will bring some actual progress. Sure would be cool to get the screen wall panels made/installed.