Thiel Owners

Still futzing....built a set of non bi-wire speaker cables w Canare wire, silver aQ spades and silver solder today...  I . was running zippy do dah test bench speaker wire extensions as all I ever seem to have is biwire stuff... anyway sounding even better.... they the 2.3 are good for sure

Bluetone,
Unless you really really really really love the 3.5s, like a lot, the smartest thing to do is to get something else, keep an eye out for some drivers that will work in the 3.5s, put them in, and sell them.  They're a finicky speaker that's what, 30 years old?  The EQs need constant attention (at least mine did) and the mids are asked to reproduce too much bandwidth and blow frequently.  They are simply overworked.  On top of that, they're shouty and harsh.  I've been there!  There's a pair of 2.3s on usaudiomart for $625 right now.

Happy Friday - All.

after 35 years of having Thiel,  I agree with Tom that the best sound is pretty much straight ahead,  or maybe a tiny bit of toe in.   i have my 3.7's set up with a distance of  9'  between the coaxes and 8' from my ears to the coaxes.   i got a lot of good info from MapleShade plus i really like their Sampson rack and brass feet.  http://www.mapleshadestore.com/freeupgrades.php

Bluetone - I would like to add some perspective for  your 3.5s.
As Ketchup alludes, the design is dated in the sense that each product builds on and improves the groundwork laid be its predecessor. Add the problems of replacement drivers, and there is a pretty big pickle. For this conversation I am going to assume that the 3.5s are your speakers which you would like to keep.

One of these days I will get access to a 3.5 midrange or two, perhaps I  might borrow Oblgny's or similar to take measurements. Perhaps Thielrules and I with guidance from this community can zoom in on a best replacement. Rob needs one for just such circumstances. Perhaps between our resident DIYs and myself, we can tweak the XO well enough. If such a team were working on the problem, I suspect we could find a solution better than abandoning your 3.5s. There are probably still over 3000 pair out there which could benefit.

I also want to address Ketchup's assessment of "shouty and harsh". My experience with 3.5s in scores of rooms and shows and studios is that those adjectives do not apply when the system is right. Large excursions of the midrange do come with the first order territory; indeed Thiel midranges have always carried that load - still do in all models. Indeed they eventually fatigue. But within the past year, I have heard stories of people still 'blown away' by 3.5s even when compared with some highly regarded current speakers.

Perhaps you guys on this forum could take on various parts of the task and we might develop a pretty good 3.5 solution.