You can (and should) use a speaker switch in this situation. Connecting your separate amp and the receiver to the same speakers would connect the outputs of the two amps together, and result in damage to one or both units. Quality speaker switches are readily available for little money. Though they are normally used to switch one amp between two sets of speakers, there is no reason they could not be hooked up in reverse by connecting your amps to the speaker-outs and your speakers to the amp-in on the switch.
2 systems one set of speakers?????
Hello All I have a question that maybe someone out there can help me with. I have a pre-amp, amp, cd player set up by its self. and I also have a receiver and another cd player that sound really good together for rock cds and the cds that don't sound as well on the pre-amp set up. Is there away I can use the 2 systems through one set of speakers?? So I can play the pre-amp set up and then switch to the receiver set up on the same speakers. Can I run 2 sets of speaker wires to the same set of speakers?? or will this damage one or the other. is there anyway or some thing I can do? I'm new at this so please someone help THnaks