Thiel Owners

I hope to hear discussion about sdecker's observations. I have heard neither speaker, but share his thoughts. Bring it on, please.

If anyone is interested there are a pair of 2.2's in black at Hawthorne Stereo in Seattle.  One of the woofers shows evidence of re-gluing the surround.  The passive radiators show signs of delamination as well.

Regarding the differences between the 2.3 and 2.4.

I would really like to put the 2.3 next to the 2.4 next to the 2.7 and listen to the difference.  I have 1.6, 2.7, and 3.6 and enjoy them all immensely however have not had the opportunity to hear the same line side by side.

Owned 2.3s and helped deliver a bunch of 2.4s.  At one point, they changed the tweeter in the 2.3 (helped replace a blown one in one speaker and had to replace the other to match).  From memory (long time), the new one might have been vented in the back of the driver.  The 2.4s are clearly much smoother and not as harsh when driven a bit hard.

For some reasons, Tom reminds me of this. Oh well maybe I’ll use the stereo illusions ... But I’ll take my gloves off at the challenge.
https://m.media-amazon.com/images/M/MV5BNjhiMjk1YWYtMjgyYy00YTFhLTk0NTMtN2Q5MDZjMWEyYWI1XkEyXkFqcGdeQXVyMTQxNzMzNDI@._V1_.jpg

It may have to do with the filtering affect of the grille. In a linear system, every frequency passes through the system will only be affected by a constant value, either a gain or an attenuation, which will be applied to all frequencies all equally. This would be ideal or at least preferable.

My System Theory 101 is a bit rusty, and I am not sure if a filter can be called a "Linear Time Invariant" (I am pretty sure about the Time Invariant but not sure about the Linear part), but I am pretty sure any filter will affect the phase of a signal and not just the amplitude. In this sense, a grille will act as a filter, a high pass filter albeit a mechanical one, because it will attenuate the high frequencies more than the low frequencies, and just like any filter, therefore introducing a phase shift at the high frequencies. Therefore the attenuation affect of the grille is not a "constant", and probably therefore one cannot be compensated by a "fix" amount on the treble to counteract the variable attenuation of the grille. And I suppose the phase shift introduced by the grille at high frequencies is what affects the "openess" of the sound that I notice.

I suppose one could match the treble response to counteract perfectly to the frequencies response of the grille, but that’s probably very difficult and probably not worth the trouble. It’s probably a lot easier to listen just with the grille off :-)

Gloves put back.