Great work Bill!I'm a little lost with your comment below. Can you post a pic or explain a little bit more about?
" I decided to try damping the H-290s even tho' there was limited success doing that to Altec 811s some years ago. And these horns aren't even 'cowbell' aluminum. I completely covered the outsides of the horns with M-D rope caulk, $4 bucks a package. It made a fantastic difference, completely eliminating the coloration. This is a mandatory tweak for anyone using the H-290 in whatever speaker. "
Thanks,
Norbert