Thiel Owners

prof,
My sub gets the signal from  a PX05 passive crossover for the 2.7s. I hooked it up, placed the sub between the 2.7s and haven't done anything since, except upgrade the preamp and amplifier.
Music source is an extensive classical CD collection via a Bryston BCD-3 spinner. Relatively few of my CDs have appreciable low bass. 

Prof   I don't find myself pining for more bass either with the Thiels or the Josephs.
Your experiences may be different but for me the subs really add something that I don't realize until it is not there. It is not so much more bass but clearly hearing the foundation of the song. Once dialed in, there is no going back. Now, if you switch out speakers regularly, it may be inconvenient to go through the trouble. For my large room, the subs were easily integrated, but for my smaller room, I'm still experimenting with determining the best positioning. 

jafant is clearly someone who works in mediation, conflict resolution, marriage counseling, or a college professor.  Or fears discord in his 150 page thread!  It's all good.

Makes me satisfied that Steve McCormack thoroughly modified his already-stable power amplifier to meet the needs of my CS2.3, now using the slightly easier load of 2.4s, and can confirm it has great specs into load in stock form, much better specs now as confirmed by the designer, and sounds great driving them to my own ears, as well as besting 5 other $5-15k modern amplifiers in a all-day shootout last year!  I wish this were so for all Thiel owners (not only those in this forum).