ginger321 wrote:Can you have a Stereo receiver playing FM only to the same pair of speakers that you have an amp playing LP's or Cassettes. Of course, listening to one source at a time with the other source off.
In other words, two sets of speaker wires going to the same speakers without any interference??
Can you? Yes you can. But if you do, expect to replace drivers (or worse) regularly on both amps/receivers.
And yes, there are switches for the purpose - but you need to make absolutely sure that there is no possible way that you are able to cross-connect both amps. Repeat - ABSOLUTELY AND UNDER NO POSSIBLE COMBINATION OF SWITCH POSITIONS. Most "speaker switches" are for one amp to connect to multiple speakers, not the other way around.
I have actually mades such a switch using two ganged double-pole, double-throw, center-off switches. Speaker feeds to the center and the speakers feed to "UP" and "DOWN". Center-off is a convenience. http://www.skycraftsurplus.com/heavydut ... ff-on.aspx
is a link to the switches I used. One for channel A, one for channel B. No potential for cross-connection. And, as your switch may handle many watts - go heavy, not light. 2500 watts may be overkill - but there is no real cost penalty.
One more thing to keep in mind - it is _very_ bad for most solid-state amps to run with signal at some volume but with no connected load. True, a pure power-amp can run all day with no load, but if a signal is applied under those conditions it will overheat rapidly and unless thermally protected will run into overload with the potential for a *POOF*
. Not instantly but all-too-soon enough. Similarly for tube-amps. Just an altogether bad idea.