I believe the Rogue Hydra and Medusa are stable to 2 ohms. I have the Hydra and it is a great amp.
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Those Thiels are monsters to drive. I owned the CS7.2 which was an easier, but still rough load on amps. The Parasound JC1's struggled and shut down a couple times even with them. I ended up with Krell FPB 650M monoblocks. Finding an amp that can control/make those older Thiels really perform at there best is limited imo. |
I am using an Apollon NC800 SL amplifier, based on Hypex nCore NC500, with special buffer using Sparkos SS2590 discrete opamps, to amplify my Thiel CS3.7, which run almost all frequency range near 2 ohms. Recommended, sound great, no background noise whatsoever. If you need more power consider the nCore NC1200 based amplifiers (Nord, Apollon). The new Purifi modules should be good to go for 2 ohms too. |
I know someone using the Icepower IceEdge modules on his Thiel CS3.7's and he can blast it all he wants. I have tested the IceEdge module to do 1000 watts at 2 ohms. That is a lot of power but less than half on what a JC-1 will do. I think very old design speakers with this kind of impedance don't make sense. You limit yourself to amps and I have no doubt there are far more transparent higher efficiency speakers out there.....Check out Spatial, GR Research, Tekton. These speakers are very sensitive and very transparent. You could even make some speakers for very little that would be mucho better....and easier to drive. Almost everything I have is DIY. BTW, the Stereophile review shows a 2 ohm load for the CS5....where does one half ohm come from? https://www.stereophile.com/content/thiel-cs5-loudspeaker-measurements-0 |
Speakers like these Thiel CS5's, their bigger bother the CS7's, all Wilson Watt/Puppy, Alexia's mkI an mkII, also the Alex, Max ect ect ect and many other brands, have sound to behold when "driven" with amps that can do current, that can keep doubling the full output wattage for each halving of impeadance loading, and to say this type of speaker doesn't make sense, shows high degree of ignorance, bad hearing or never heard them "driven" properly. Cheers George |
- 420 posts total