[net.audio] Anyone have a design for an A/B/A+B speaker selector?

/a3/c5215a/weheh/user@mhuxa.UUCP (07/12/83)

I have two sets of speakers that I want to put in different rooms. I would
appreciate receiving a circuit design for an A/B/A+B switch or references
to a design of such a circuit from any of you out in audio netland.

Thanks in advance...R. Gordon {allegra,ihnp4}!mhuxa!weheh