My buddy came across a pair of Yamaha S115H II PA speakers. He has been wanting to set up a surround sound system in his basement for a while now and thought he could use these speakers. He knows NOTHING about audio and I dont know much more when it comes to pro audio. Maybe someone wouldn't mind taking a minute two to clarify a few things for me. Thanks in advance. For one I don't know how good an idea using pa speakers in a home theater would be? Also in order to set them up I would need a preamp and pro amp correct? Would I Be able to set these up with a regular HT reciever to check their sound quality before investing in a proamp? If so, the connectors on the speakers look like phono plugs, do they sell adapters for speaker cable?