Thiel Owners

@tomthiel     
Sure wish I could post images directly.  Doing a google image search on the speakers in question will produce a few with the correct angle to view the issue at hand, below.

The 1.6 (and 1.7) are similar to the 2.4 about my concern of the recessed baffle.  The 1.5 is a very different mounting strategy from the 2.3.  The 2.7 baffle is again different from both the 2.3 and 2.4.

I will play with your felt solution with my 2.4, but in their case, this will disallow use of the grilles w/o some klugy modifications: most of the grille weight is supported by a pin above the coax, requiring the grilles remain flush against the baffle; the magnets help support the grille perimeter.  In my home, the grilles must remain on.

Here are quick and dirty links to reasonably good views of the 2.3 and 2.4 baffles:

https://www.alibaba.com/product-detail/Thiel-CS-2-3-Hi-End_11195163.html

http://www.hifi4sale.net/t38695-thiel-cs-2-4-used

sdecker - thanks for the photos. On my 1.6s I put a strip of aluminum at the bottom of the pocket to support the weight of the grille. Of the various felts I have tried, the best is F11 pressed wool from Sutherland. F15N (needle punched) is nearly as good and costs half as much. I have tried 1/8" and 3/8" and don't hear or measure much of any difference. Probably land around 3/16" depending on physical parameters.

Thiel Owners ,  that's a dyeing breed 

I agree that the CS2.3 baffle is cleaner vs. the CS2.4 in term of "diffraction".  I never noticed the difference before.  Maybe the motivation for the CS2.4 baffle was about the "aesthetic" appeal.  

@twoch I've done tie-dye once but fail to see how that is relevant to this thread.

@tomthiel @sdecker  OK, you now have me very curious to try a baffle treatment. But my DAC is away getting an upgrade (I'm currently rediscovering my LPs), so I'll have to let that settle in before I can do a fair test of changes to the baffle.