Center channels are a WAY fun DIY project. Just finding a configuration that physically mates with the video setup is a challenge.
In this one for Hamilton, I just grabbed the classic D'Appolito MTM alignment and used BB6P for the box calculations. It makes a shallow-profile (6") box that can be wall mounted, or in the installation shown, mounted under-screen with a bit of upward tilt toward the seating area:
http://audioheritage.org/vbulletin/s...ead.php?t=7004
In retrospect, since we adjusted the crossover frequency a bit, studying the actual performance might reveal an optimized woofer spacing.
Hamilton's mains are 4430's, so the 2342 biradial seemed a good match. He went on to construct two-way surrounds using them and LE14A's, which also worked out:
http://manuals.harman.com/JBL/HOM/Te...200t3%20ts.pdf
I've done some subsequent work with various drivers on 2342's, and concluded that 2416H-1 sounds better than the cheaper 2418H-1. Working with 2426H on them now, what Hamilton used, I may have some recommendations for crossover tweaks soon.
We've already had several suggestions here in the new DIY forum that we should just sell this old stuff and buy professionally-designed systems. I kinda like Toddalin's response, if I may exercise license to paraphrase:
"I KNOW there's better systems out there to buy. I have what I have, tho, and I just want to make it work its best...."
Somehow, buyin' plastic models was never as satisfying as building 'em from scratch....
Andre gets it, apparently. Is there anywhere but here to purchase that smile?