Amp recommendation to drive Thiel 3.6 speakers


Hello everyone,
My first post here. I''l get right to the point.
I am looking for recommendations for suitable power amp monoblocks to drive a pair of Thiel 3.6 that I have had for 20 years, and which I intend to keep. Let me describe my current system.
Speakers: Thiel; 3.6
Power amps: Manley 250 classic monoblocks (tube)
Pre-amp: Audio Research Reference (tube)
Phono-pre: Audio Research Reference 2 SE (tube)
Turntable: VPI/SME, and Linn LP12
Digital: Audio Research CD3

I am looking for recommendations to replace the Manleys. From what I know, the Thiels are a difficult load.
Thanks in advance
pyma6

Showing 4 responses by georgehifi

pyma6 OP
I ended up buying a used pair (recent build, 2 years ago) of Parasound Halo JC1’s
Good choice for these speakers, have the JC1’s in high Class-A bias mode at your initiation listen.

And your PH3 has 71db!! of gain, so you could combined with the JC1’s very high gain and 100kohm input impedance, use a just a simple Passive Pre amp, as you have all the gain you’ll need even from the PH3 let alone even more from digital sources.

Cheers George
pyma6 OP
Some reviews warn about a harsh tweeter

 Look what I posted about that above your post
And they all need doing now because of the age they are, instead of being viscose it turns to tar and causes linear distortion and heat, and if left too long, say good by to the tweeter one day.
Cheers George
Pym OP
I looked at a Gryphon Antileon Signature. I wish! Unless the photos have me wrong, what an ugly monster, the wife will run me out.
Most women I know like that 1910-1935 "Art Deco" look, especially the fashion of that time.

https://ibb.co/CQ84bxf

https://img.theculturetrip.com/768x432/wp-content/uploads/2016/11/usk-06620r1-e1479902480125.jpg

Cheers George
pyma6

Great speaker if driven well. Could do with the tweeters old ferro fluid replacement by now, then the highs will sing again, look for posts I did on how to do this yourself. Here’s one.
https://forum.audiogon.com/posts/1843203?highlight=ferro%2Bfluid

At 86db you need at least >150w-8ohm that can "almost" double that wattage to 4ohm and again 2ohms.
And with this kind of load 3ohm, dipping to 2.3ohms you need an amp that won’t care seeing a continuous 2.5ohm load.
Stereophile’s test results:
"The loudspeaker is under 3 ohms through most of the range, dropping to a minimum of 2.3 ohms at 3.6kHz (the cursor position). The low impedance value explains the CS3.6’s need for the iron-fisted Mark Levinson No.23.5 to provide control in the bass"
https://www.stereophile.com/images/archivesart/Cs36fig1.jpg

Cheers George