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Anyone used the Rogue M-180's to driveThiel 2.7's

I just replaced my venerable 3.5's after 21 years and I am going to splurge on new amplification. I know Thiel uses SS as reference amps (Krell and Bryston) but I am jazz and classical guy and have always leaned toward tubes. Thiels are ineffecient and at 4 ohms I am concerned that they will play loud enough. I do not play rock concert levels but I do like to crank them up once in awhile.
jtomes
6 responses Add your response
telescope_trade
555 posts
 
I just bought a new Peachtree Nova 220 amp and Nova pre amp
and it seems to be a superb match so far for my new Thiel
2.7's. I only have about 25 hrs on them and about 250 hrs on
the Thiels and also just added new speaker cables & PC's. So
all of it is new but I am very happy with what I am hearing
already, simply outstanding! Sorry, no experience with the
Rogue's.

tls49's avatar
tls49
1,351 posts
 

The impedance graph for the 2.7 shows it dropping well below the 4 ohm nominal rating. Take a look here,

http://www.stereophile.com/content/thiel-cs72-loudspeaker-measurements

Reading the last line in this review on the M-180 suggests using it with a speaker load that does not drop below the nominal rating,

http://www.stereophile.com/content/rogue-audio-m-180-monoblock-power-amplifier-measurements

It appears that this will not be a good match, and I'm guessing the speaker is just not tube friendly, might be best to use SS.
jafant's avatar
jafant
19,624 posts
 
Do not forget Conrad Johnson gear to drive these wonderful speakers!
telescope_trade
555 posts
 
TLs49,

That Stereophile link is actually on the older 7.2, not the
new 2.7. :o)
tls49's avatar
tls49
1,351 posts
 

Telescope_trade, thanks for catching my error, looks like dyslexia got the best of me. Nevertheless, looking at the Thiel website, the CS2.7 has a nominal 4 ohm rating with a minimum of 2.4 ohms, even lower than the older 7.2. Considering the statement in the M-180 review, it still looks like the amp/speaker match will not be good.
telescope_trade
555 posts
 
Hi Jtomes,

Any progress on your decision on an amp for your Thiels?
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