I got a Dr. Bass 112LF for dirt cheap a while back. The Celestion BN12-300S that is in it and wired full range sounds pretty good with my electric but is lacking a little high end clarity with my upright. I'd like to add a tweeter and crossover but have limited space on the cabinet's baffle. Anything larger than a 3" overall diameter won't fit, which rules out A LOT of the options I'm seeing. In fact, none of the "pro audio" tweeters on parts-express are small enough but I've found several in the "home audio" section that would work.
The tweeters I'm looking at maybe will be 1 or 2 in2 on the inside of the cab, so any effect they have on the cabs tuning will be negligible. My biggest worry is will such a small tweeter be audible in this setup.
"It's such a fine line between stupid, and clever." - David St. Hubbins