Thiel Owners

@unsound My meters observation is said in a relative sense. The CS3.7 seems to draw relative less current than the other 2 based on the movement of the meters. It is a rather stark observation because at about the same volume level the CS3.7 does not move the meters and the other 2 do. 

If I was using digital meters I may have exact number to state but the general pattern that I am describing would be the same.

I think that makes sense. The Thiel sensitivity is about 6dB higher than the Kef (90.7dB vs 84.5dB according to Stereophile’s meansurement).

@yyzsantabarbara , I think the first graph on each of the respective links might explain what's going on:

KEF LS50 Anniversary Model loudspeaker Measurements | Stereophile.com

Thiel CS3.7 loudspeaker Measurements | Stereophile.com

Jim Thiel seemed to be rather cognizant of the effects of a steady vs. a variable impedance load on amplifiers. As much as a low impedance is tough on amps, amps don't typically care for a varying load, especially tube amps. A variable load can exacerbate the mechanical / damping issues of analog meters as well.

@Imhififan, at these impedance loads the rated sensitivities can be misleading.

@tomthiel, et al, Saw this on another site:

Renovating Thiel CS3.5 Speakers | Page 2 | Audio Science Review (ASR) Forum

Post #27

Is there newfound hope?

Thanks for the info.