Thiel Owners

^While not specifically calling out the Coda, I often suggest caution when reading the meters on consumer gear. Despite their not inconsiderable expense, they are almost never calibrated, and more often than not serve to misinform rather than to inform. I'll hazard a guess that the digital meters on some of the newer ultra-expensive gear might be more accurate.

@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?