Each 6 is made of two 2+2 units. So each speaker has two pairs of terminals intended to be driven by either a stereo amp into 2 x 6ohms or bridged with a large monoblock into 3ohms.
Acoustat Electrostatic spearkers
I’m from old school, I still have and always will use these speakers. I have 2+2s now. I just pick up a set of model 6s which have two interfaces on each speaker. My question is can I just run speaker cable to the other from that to the power amp. Or should I run two speakers cable one to each interface. Or use a set of shot gun speaker cables.