Thiel Owners

@unsound
Thanks for your post. Re the specs -- I merely copy/pasted them off the current Spectral site, and copied the Thiel data directly from my 3.7 owner's manual. Those are the only sources I know of -- are there others?
Todd

@tmsrdg:

https://www.stereophile.com/content/thiel-cs37-loudspeaker-specifications

http://spectralaudio.com/

@unsound,Yikes -- I pasted the specs for the DMA-300 into the DMA-400 slot. To amend:

Power Output DMA-400 (continuous)

@ 8 ohms - 350 Watts RMS

 @ 4 ohms - 560 Watts RMS

@ 2 ohms - 705 Watts RMS

Output Current

90 Amps peak

Frequency Response

ą0.1 dB, DC-150 KHz

ą1 dB, DC-1 MHz

ą3 dB, DC-1.8 MHz

Thiel  actually checked out worse on Stereophile specs, going down to only 26 kHZ, not 22 as stated in my manual (weird), DMA-300 is same as quoted. Alright! Sorry about the confusion.

@tmsrdg, Thiel recommends as little as 100 Watts for the 3.7’s. IMHO, the 200 minimum you suggested might work better. As I’ve suggested in the past, those are standard 8 Ohm power ratings that should be doubled down with actual minimum impedance.

@unsound
Is there a technical reason that the "double down" ratio keeps popping up?For  instance, the DMA_400 listed above does not do this in sequence from 8 ohms to 4 to 2, but as I run the numbers it seems more than adequate. Is that right, or does "doubling down" refer to an important harmonic ratio needed here? Also, the minimum impedence of the 3.7 is 2.8 ohms, so perhaps we need to consider that the DMA-400 does indeed double from the 8 ohm rating to the 2 ohm. Thanks again for any thoughts on this.