Edited June 24, 2018
at 02:32 PM
Monoprice MP-65RT 6.5in and Ribbon Tweeter 2-Way Bookshelf Speakers (Pair) [monoprice.com]
are on sale for $44.99, with free shipping. Use coupon GOAL5
to bring this down to $39.99 (they're not excluded!).
Audioholics has a really nice review [audioholics.com]
of these that was just put up last week. The takeaway is that they're a bit bright (could be modded with a simple first order low pass filter, or a real crossover, or eq'd to take care of that) but have excellent imaging. Some of the reviews on MP complain that they're not quite as impressive in terms of bass as some might prefer, but a comment on Audioholics makes it sound like their bass probably outperforms for the price, but that they excel paired with a sub.
Everyone seems to agree that while they might be a bit over bright in the higher ranges, they have outstanding imaging.
For $39, I'm considering getting a pair even if it's just to cannibalize the tweeters and DIYfrankenstein them with some Miccas. $20 per would be a fantastic price just for some decent ribbon tweeters alone. Or maybe I'll just swap them in as my main desktop speakers in place of my MB42s if I do get a pair and they're better. Still trying to decide if I'm going to cave and order some myself, I really shouldn't since I have enough speakers just laying around for various projects as it is, but they're super tempting to try out those ribbon tweeters.