60 watt Rogue Tubes for Vandersteen 3A Signatures

According to Stereophile's measurements of the speaker in question, the impedance drops to 2.8 Ohms and the sensitivity was measured at 85 dB/W/M.
Unsound (System | Threads | Answers)

That's significantly different than Vandersteen's stated specifications.

6 ohm nominal with a 2.8 ohm minimum does not make for a tube friendly speaker, IMO. I'd stay away from tubes for this speaker based on these measurements.

"stay away from tubes for this speaker"

Agreed. With the exception of the Jadis Defy 7 I never heard a tube amp bring out the strengths of the 3A better than quality solidstate.

Wendell

With the exception of the Jadis Defy 7 I never heard a tube amp bring out the strengths of the 3A better than quality solidstate.

Wendell
Narrod (Threads | Answers)

Thanks for that info, Wendell. SS has certainly been the recommended topology for as long as I can recall. When I saw the manufacturer's specs of 6 ohm nominal/4 ohm minimum, I thought perhaps they were candidates for tube amplification. Admittedly, I got lazy and didn't read the Stereophile measurements section...something I'm always hitting home to others...so I'm guilty of some hypocrisy here.

I should say that I have heard the bigger Vandersteen's being run with Audio Research tube amps, and they sounded absolutely sublime.

03-15-10: Unsound
I should say that I have heard the bigger Vandersteen's being run with Audio Research tube amps, and they sounded absolutely sublime.

Are these the Vandersteen models with powered subwoofers, like the 5A? If so, that makes a significant difference since the tube amp isn't responsible for powering the difficult low impedances in the bass frequencies. In this case, there are many folks using tube amps, including Atma-Sphere.