Looking at all the info, connection-wise they look like just about any other speaker. They're 4 ohms, the wire is 16 gauge. Three of them offer a connection challenge. I'd have to make my mind up between three amp channels and one amp channel. I'd probably go with one amp channel.
And yeah, the system has to be powered through a GFCI.
A good answer is easier with a clear question giving the make and model of everything. "The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw
