That's not enough information to go on. Can you remove one of the speakers and get the exact make and model number? Do you have separate wires runs from each speaker to one location or are the speakers connected in a daisy chain fashion? There are two styles of in ceiling speakers. Regular home speakers that are typically 8 ohm and commercial multi-room speakers designed to run off a 70 volt system. The type of speaker and wiring will dictate what you can do.