Designing and Building a Full Range Speaker around Newform 45" Ribbon?

I've been shopping for new speakers for more than a year now, and still haven't bought any I liked better than my current speaks... for a price I am willing to pay. My latest consideration was the GR Alpha LS speakers and although they are wonderful(so folks say), I just can't afford the $3.5-4K per pair price since I need a minimum of 5 speakers.


That said, I recently delivered an amp to a local guy who had Newform R645 speakers with the cap and KSU2 crossover upgrade. Although I only spent about an hour listening to them, I liked them alot. New Ribbons, crossovers and mounting hardware cost around $1K per pair, which is much more in my price range for a 5.1 setup.


In doing my research on these speakers, I found that the primary complaints was with the integration/crossover/design of the ribbon mated to the bass module. Supposedly, the KSU2 and cap/ribbon upgrade solves these complaints?


Has anyone designed/built a full range speaker which uses this R45 ribbon?


Alternatively, I can buy used R645 speakers used on Audiogon for around $1500 a pair.


Oh well, that's alot of stuff and questions to consider in one post...

Anyone have any suggestions as to building a Newform R645 type speaker or should I just buy them used on Audiogon?


Thank you all very much for your help and suggestions!