jpc - we also investigated the PA after several hours of "
wooo wooo, 'awaiian tropic geerls wooo wooo" from the muppet with the mike.
.... it seems to be a standard 2-screw electrical cable connector, but you'd need an amp of meaty proportions - couldn't quite make out the impedance of the speakers [perched up a fence overhanging the razor wire

], so maybe a step ladder (and/or larger wire cutters) may also be in order......