THIEL CS3.7 Anyone heard them?

Brownsfan...that's interesting, as I heard the 3.7s a few times (I own the 2.4s) and think that one of the Thiel's fortes is timbral accuracy. The Thiels do require very high quality amplification to make them sound good, especially high current drive in the partnering amp (they are not easy speakers to drive). Do you mind my asking what amps they were partnered with when you heard them? There could have been an issue with the parntering electronics that could have caused you to perceive them to have timbral issues.

Honeybee2012...you should listen for yourself for sure to make up your own mind but be mindful that Thiels in general and the 3.7s as well will appreciate a very high quality amp (and preamp and front-end :-)) to drive them. Some other speakers are a little bit more forgiving of what is up the chain from them. The 3.7s however are so resolving that they will let you hear exactly how great or how poor the partnering electronics (and music) are.

Just a reminder; bass response can be room sensitive.

Cmalak, The amplification was Electrocompaniet. Don't know the specific model. I heard the same front end followed by a Wilson/BAT audition in another room, followed by the Electrocompaniet/Thiel audition back in the first room. I did not hear any timber issues with the Magnepan/Electocompaniet audition. The issue wasn't huge, but there was just something not quite right especially compared to the Wilson Sophia 3's which I just loved. Those speakers were just dead on.

I own the cs3.7's and don't miss the bass below 35hz but I don't listen to pipe organ. With respect to a sub, Thiel's smart sub system is amazing. It does far more than "add bass". In fact, adding much bass to a well broken-in and well-fed pair of 3.7's in a moderately sized room would be overkill, IMHO. The smart sub gives you more placement freedom and can make the sound of your system more effortless. I wouldn't even consider a non-Thiel sub with the 3.7's because none will sound seamless. Many people have heard my current system and while it had its flaws to be sure, no one has ever commented on a lack of bass...in fact, most are surprised by how strikingly musical the bass is. Nonetheless, having heard the SS 2.2, I wish I could afford a one but I'll have to save up first.

The Thiels might sound lean to those who aren't used to Jim Thiel's sound signature but having owned and loved the CS2.4SEs and now CS3.7s, I don't find it lacking much to be honest. If there's a lot of bass in the source, the 3.7s (and 2.4s) will reproduce it, but it wouldn't add more bass bloom if it isn't there.

The 3.7s despite having only 1-2Hz extension on paper lower than the 2.4s sounds a lot more filled out on the lower octaves than the 2.4s.

I still ended up with a dual SS2.2 sub to augment the 3.7s for stereo music once I moved to a bigger room for the last mile. By then I was already so invested in the sound of the Thiels and didn't want to muck it up by going a different brand.

I run Project RPM10.1 evolution with Sumiko BlackBird, Bel Canto Phono3 and EMM Labs XDS1 for source, ARC Reference 5SE for pre and Electrocompaniet Nemos for power. Cables are primarily ASI Liveline (power and XLR). Sound Conditioner is Sound Application RLS240