UPDATE, after midnight:
OMFG! I put the rebuilt passive radiators in and cranked the initial reference tunes. WOW.
I have been fortunate today. I got a pair of DCM Timepieces. They look like baby Timewindows, about 14 inches high. So far they sound great, but I'll have more to say soon.
And I have a pair of ESS AMT 1B Bookshelf speakers. I've refoamed the massive bextrene cone 12 inch woofers & rebuilt the 12 inch passives. I'm going out now, and will let them cure,and can't wait to hear them when I get back. I've wanted to check these out for years.