Another interesting note (at least to me): Yesterday I added some furniture stuffing type batting to the sides of the cab, as well as the top of the board on the bottom, which is part of the port structure. Definitely helped to focus that sort of--not sure if this is the right way to describe it, but it makes sense to my ears--ambient low end. Also seems to have eliminated the "frapping" of the grille cloth, maybe due to a little less woofy air flying around?
Oh, yeah. I'm a master with the technical terms!
Tomorrow I'm going to pop in an Eminence Legend speaker and take it for a test drive. I was looking for a speaker to pop in there for the day-to-day general use and abuse I'll throw at it with my gigs and rehearsals and whatnot, and I found a nice deal on this one. I plan to keep the original speaker on hand and in its present good condition. I have a buddy who owns a studio and wants to rent the amp from time to time for recording. I figure I'll put the old speaker back in for those situations, so his clients can go appropriately ga-ga over the vintage thing!
(Pretty cool to have an amp make you a little cashish when you're not even there!)
Hey, on another note, anyone have any idea what the reasoning was behind the removeable board that creates the port structure in the Theile cab? Seems kind of unusual compared to other cab designs I've seen. I bought a clutch bit today just, just to cinch that port piece down, as it had come loose a bit over the years, just like every other screw in the cab. That seemed to mellow some vibrations out a bit, too, and, now that I think about it, maybe that contributed to the diminished grille cloth vibration...
Matt