1 amp & 2 sets of speakers?

I have two sets of speakers (Event 20/20's & Alesis Monitor one's) is it possible to run these off of one power amp and then switch between the two speakers? My amp has two left and two right outputs so I should be able to connect all four speakers but is it possible to switch between them somehow? Any help would be greatly appreciated! Thanks, Jeff

Jeff, first I'd appreciate it if you can follow the link at the top of the forum and edit your profile to include at least a general area where you live - next, I'd need more info on your amplifier. Some have "A/B" switches, others don't. IF yours doesn't, you can still get passive speaker/amp switches or monitor controllers that can switch between multiple sets of passive or active speakers... Steve