Thiel Owners

Brayeagle - thanks. I also confirmed with Rob that the SS2.2 is all Jim's design, updated by an improved amplifier.
Unsound - I don't know. The motor and coil could be the same, but the surround, spider - compliance in general, and moving system mass would have to be altered. It would be a piece of cake for Jim to modify such a woofer, and could also be done by SEAS, etc. But, as usual, a stable forward-reaching company would have to take on such an endeavor, DIY couldn't in my opinion.
Robrink - sorry that I missed it. I gather that you have 03As. Well worth upgrading. I remember those plinths as made from Baltic Birch, which could be repaired by a local cabinet shop.

@tomthiel, the flat concentric mid/tweeter of the 3.7’s are of greater interest to me than the 3.6’s separate drivers. I would imagine the concentric driver could go a long way towards ameliorating lobing issues?

rockrink

Welcome! Good to see you here. Consult Mr. Rob Gillum at Coherent Source Service (CSS) in Lexington KY. Keep us posted on your progress. I look forward in reading more about your musical tastes and system.

Happy Listening!

Unsound - I believe that the wavy driver completely eliminates lobing at its cross point, leaving only the lower cross point to lobe. And the 3.7 lower point is so low that beaming is quite minimal, so the on and off axis response is effectively very similar, leaving only on axis ear height as a constraint, which is easily solvable - sit on a couch or easy chair. The flat wavy disc practically solves the hollow tweeter launch environment. Can you tell that I’m a fan? 
My main reason for addressing the older models is due to their geriatric needs, the large quantities, and the greater room for improvement.

Saw Simon over at Audio Consultants yesterday where they are in process of cleaning up what little they have left. In case anyone is interested, among the leftovers was a pair of Thiel SCS3 speakers.