Thiel Owners

Just a thought. I suggest running the 3.5s wide open with no EQ. I remember the bass loading as critically damped, so it should approximate 12dB / octave. (But that's old memory) If you can match that rollout with a sub, the sub HF will operate in the directionality range, so 2 subs is better than 1. I for one am most in your progress.

@cascadesphil Nice, thanks for the information. I don't necessarily need that now but might be fun to play with at the price!

Thanks Tom. Yes, I was thinking to use 2 sealed subs with the 3.5. 

Bud, Coors,  Heineken, Corona, Draft?

It's not the beers that made the man.  

Happy to report a noticeable improvement with the subs and the 3.7. The modes in the room have now been tamed resulting in more relaxed and balanced sound, more enveloping especially listening to orchestral pieces, and the speakers have now completely disappeared. Soundstage is now massive, much easier to listen to lower volume and get the full experience. Have the subs located halfway on each sidewall, 18 inches off the floor.