Thiel Owners

thank you again TT.   your input here is so appreciated as is the research you are doing.  it is a puzzle to me why i have had bad luck with the coaxes in the 2.7's, and maybe it was a bad batch.   i use Analysis Plus speaker cables and they are only 8' runs.   the first driver that blew was used with a Marantz reference amp,  so no slouch,  but the second and third were with the PS amp,  so i doubt i drove it into clipping.   i have issues in the right ear and it will buzz like a tweeter when the  music is played too loud.  sort of my canary in the coal mine  thing.  maybe it is a thing of the past now that i have 3.7's which i think are less demanding on the amp due to the higher input sensitivity. i have had to  dial back the preamp from an average listening level of 39 to about 33 (PS BHK preamp).

Tom, that's more helpful info, thanks!
Now to go crank my tunes!....

I'll try to find out something from Rob about the 2.7 vs 3.7 failures. Same driver.

Thieliste, good investigation. In the day Thiel, especially the CS5, was very successful in Japan. Luxman amps were the clear choice in ultra high-end systems. They are seriously good. The amp you reference is still doubling into 1 ohm, and their engineering choices are musical (most Japanese amps are not, in my opinion.)

Ron, I see from the XO schematics that the higher input sensitivity of the 3.7 is due solely to its more efficient woofer. The 2.7 coax has resistors to pad it down to a less efficient 8" woofer with the same coax. No satisfying answers yet.

thanks Tom,  that is interesting if i understand correctly about the resistors.  when i sent back the last damaged coax to Rob,  he sent the replacement back with a resistor on the positive terminal.   to the best of my recollection,  none of the others had that resistor.  could the lack of that resistor make the drivers more prone to damage?