I have two receivers and one set of speakers. One receiver is an inexpensive late model that is okay for home theater, and another is a late 70's much better receiver that I want to use for audio-only applications. I live in a 1-bedroom apartment and space is such that either they both play in the living room's soundstage through the same speakers or the audio components get stuck in a corner and I invest in a second audio rack for them and good set of headphones. Who knows; maybe I'd get more out of that than playing it through my towers at low volume so as not to disturb my neighbors. Either way, is it possible to wire two receivers into one set of speakers somehow that won't risk damaging the passive receiver when you turn on the other one? If so, how you do that?