I have a Nad 762 receiver that sounds great with home theater, and a Marantz SR780 receiver that sounds better than the Nad on CD's. Is there a way to wire them to the same speakers so that I won't have to plug and unplug every time I change sources? The speakers (Monitor Audio B2's) are biwirable. Can I just run wire from both sources into the biwire terminals or is there some sort of switching that has to be done?