Getting Acoustat M3s

Hello!

I'm going to pick up some Acoustat M3s (I think they are M3s, not 100% sure of the model) from someone's garage tomorrow. Don't know much about the condition except I was told they work. Looking forward to checking them out. I've always wanted to play with some electrocstatics. Do folks think these are a good speaker, and what do I need to know about them?

How should they be transported? I was planning to remove the assembly from the back and stack them flat on a piece of plywood.

I am planning to power them from a McIntosh MC2105, does this seem like a good choice? It has a 4 ohm output stage.

Thanks for any advice!
 
Slowly lower and raise them to avoid panels rupturingt. Be ready to rebuild the interfaces: new HV diodes and capacitors, and 500 Meg resistor. Not expensive, but makes a big difference in the efficiency at this age. Also look for the “C” mod instructions in the Acoustat thread on DiyAudio