asiaaudiosoc
I have both 2.3 and 2.4 for some time now. I’ve had my 2.3 coaxes replaced once (while real Thiel was still in business and they had production coaxes stocked), and 2.4 coaxes replaced several times. The most-recent replacements were soon after Rob was up and running. The sound improvement was substantial. Rob explained this as his rebuilding them by hand as a matched pair with more attention to detail than what they could achieve in a semi-mass production flow; the big improvements in adhesives since then; and some of his ’secret sauce’ in minor build improvements to the driver that improve its performance without altering its specifications. (surrounds? mid/tweet decoupler? tweeter dome? spider design? voice coil wire?)
So yes, I can confirm your observations. Now I want to see if the same magic can be applied to the sonically ’challenged’ 2.3 drivers!