Is it in any way possible to cut the jack off of the RCA cable that goes into the receiver and splice in a normal speaker wire to run into the terminals on the receiver. It's a pre-existing Bose setup in a house, and the new owner wants to keep the speakers, but doesn't have the receiver. She bought a new one, but it doesn't have the connections on the back for the single RCAs coming out of each speaker. How can I get this to work?