muting speakers

i am working on a project that will have multiple speakers all driven by one amp. but only one will be on at a time. the idea is to give the effect of some thing moving by sequencing the speakers in a linear fasion. i was thinking of puting a transistor in the line to each speaker but that will only conduct half of the wave. i know i could do it with relays but i wanted to keep it solid state. would scr's work?

No it wouldn't, use relays! - the right part for the job, simpler (and better quality) than any other method.

ok, relays it is then

if you wanna use multiple amps, you may use a 4066 to switch the input signals.