Nakamichi PA-7 Bridging options

I currently have aan HT/audio system consisting of multiple Nak.Pa-7's. I'm planning on using one of the amps to power my center channel. Does anyone know if the PA-7 can be bridged and, if so, the appropriate connections for hooking to the speaker and preamp? I'd prefer not to just use one chanel but will do so if bridging is not an option.