Thiel Owners

batmanfan
Yup I went from the 3.7s to the 2.7s, not for sonic issues but aesthetic/ergonomic issues.
My room is 13' wide x 15 deep (that is at it's deepest point, which is the end of the bay windows behind the listening sofa, so really most of the room is between maybe 12 - 14 feet deep).   I have a large room opening to one side of the room, which no doubt helps.
The 3.7s worked perfectly in my room,  evenly balanced from top to bottom, and disappeared and imaged better than anything I've heard (except my MBL speakers).  

I actually think I found the 3.7s a bit easier to place for even sound than my 2.7s!
The Thiel designs are very well damped and controlled in the bass which I think makes them easier to place and work in smaller rooms than many other speakers.

As their bass response and dispersion characteristics don't vary that much, I don't think there would be much difference in room adaptability between 2.7's and 3.7's.

I spent several weeks going to my dealer's showroom to audition the 3.7s and 2.7s. I took a widespread selection of my classical CDs with which I was very familiar. 
In the end, I selected the 2.7s, along with a SS2.2 sub to extend the lower bass. I'm still completely satisfied with the choice. Disclaimer: I listen to classical music, and not much else. 

Living room is 16 x 24 x 12, with a large opening along one side of one 24' wall.  Straight 12"ceiling.  Speakers equally spaced from side walls, 9' apart and 2' from the end wall. SS2.2 centered between the speakers.  

I was wondering if the CS2.7 uses the same bass driver as the CS2.4?  At least they visually look the same and about the same size.

Andy - No 2.7 and 2.4 are not the same woofers.
Longer historic perspective answer:A new model from Thiel included new drivers, either specifically developed for the new model or trickled down from a more expensive recent product. Ex. the CS1.6 woofer was borrowed from the in-house developed CS7.2 mid-woofer. A newly named generation had new drivers.
The 2.7 woofer may use the same cone as the 2.4 (I don't know). But the 2.7 woofer was developed in conjunction with Warkwyn-Canada, along with the crossover. That development consumed tremendous costs, proving that outside engineering could not be afforded for Thiel to keep breaking new ground. In Jim's time I believe the 2.7 coax would have been a new driver based on the 3.7 concept. In fact, he spoke of developing such a 7.3 coax. A smaller diameter mid-plate would allow a higher crossover and perhaps a smaller tweeter to higher resonsnce-free extension. That hypothetical driver, along with a star cone, would then be trickled down into the model 2 - and called the 2.5, the next generation of the model 2.

The 2.7 is certainly an accomplishment, and a tribute to Home-Team- Thiel's dedication to creating a legacy worthy of Jim's 3.7 work. But it is less of a product than Jim would have engineered, given the time.