jeroboam - I recently borrowed a pair of CS2.4s (#3729-3730) with post "Thiel-grade" passive parts: (Solen caps, ERSE coils, etc.) These later crossovers morphed to Chinese-made fiberglass boards with cloned parts, polyester caps, etc. that I found to have less detail, a more cutting edge, and a little less cohesiveness and body than earlier Thiel in-house boards. Earlier in this thread Beetlemania shared his journey through replacing all elements of his (similar vintage) 2.4 crossovers with better-than-original parts on newly laid-out boards. Good journey, good reading. Your serial numbers would aid in identifying your vintage.
My update on the Thiel Renaissance project is that it is still alive, albeit in the background. Life has its own demands and I am presently without a shop/studio to make much headway on this project. However, my present progress is significant and exciting; co-developing some fluid-flow solutions for more settled wave-form launch from the drivers into free air. Clarity and naturalness are improved in an area that I would have never imagined even existed.
For reasons of simplicity, I am focusing my development work on Thiel's simplest product, the model 02 (1976-1984) where ideas and changes can be iterated more productively than with more complex models. My intention is to introduce a limited edition of this stand-mount monitor that builds on Jim's life work to create a very refined speaker with high musical engagement. All developments and technologies apply to later models. Details when things get closer to reality.
