Driving 1 ohm


Hi,

I'm actually driving my recently refurbished Acoustat 2+2 electrostatic speakers with a Conrad Johnson MF 2500A. My Acoustats have been completely modernized with new more rigid frame, new electronics in the interface, Medallion transformers and other tweaks.They really get down low with a lot more dynamics than before.

A lot of electrostatics owners will often chose pure Class A amplifiers to drive the load these speakers command. The 2500A plays beautifully and doesn't get very hot at the task.

My question is : am I slowly damaging the amp without noticing it ?
andr

Showing 1 response by mechans

The amps that state stable at 1 ohm advertise this fact. You will damage the speakers if phase shifts the cover off and you see flame. Or you buy the Organ and drum disc to see how your bass sounds. All of a sudden the amp become a source of red hot ballistic bits.
Get a Spectron Musician IV that is supposed to work well, so I am told, when presented with low impedance . Another choice maybe a refurbished, no plateau biasing, monster Krell.
I think the Sanders designed Coda style, OEMed Innersound (RIP) type amps all make this claim.
I had no idea they all sounded like crap. I live in happy never lower than 4 ohm speaker land which lets me use the tube amps of my choice.
Heck I have 2 pairs of vintage speakers 16 ohm nominal impedance. My modern tube monoblocks don't have a 16 Ohm tap. That's Okay My DA-60 doesn't either nor two other integrated tube amps . Don't fret my 1959, 1960, 1961 Sherwoods do. Now that I think about it since I don't own planars I doubt I have a speaker lower than 4 ohms .
I do know that only a couple of the SS amps sound like crap. That's because they lost a channel or two or are 90s stop gap crap.