I really like this idea. I have three rooms plus the living room that have speakers. Using this approach would work great. Then I could just add another ELK-73 where they didn't cover.Spanky said:I use a double pole double throw relay to switch one of my ceiling mount music speakers to the M1 when it has some to say or siren activation. Write a RULE that triggers an Output that controls the DPDT Relay when the audio amplifier turns ON on the M1. When the M1 is finished, the DPDT Relay will switch the speaker back to the stereo system.