Betterhifi.com - This is what I am listening to today! These are Acoustat Model 3-MH with the MK-131 transformers. These are electrostatic speakers. I have removed the woofer box from the bottom
Vintage Acoustat 2+2 Electrostatic speakers, surrounded by DIY HiFi/HT open baffle & dipole tomfoolery (x-post) : r/diyaudio
Acoustat Model 2 electrostatic speaker | Audiokarma Home Audio Stereo Discussion Forums
Acoustat Home Speakers and Subwoofers for sale | eBay
ACOUSTAT Spectra 1100 Hybrid Electrostatic Speakers, Original and Unmodified WOW | eBay
Acoustat Spectra 1100 Speakers Electrostatic speakers with 8" Woofer (Has Bi-Amp capability) Photo #2571720 - US Audio Mart