Background: I am almost done adding a 7.1 surround system to my master bedroom with 2 extra music zones (bathroom and retreat). My 7.1 receiver has a powered zone 2 but zone 3 needed an amplifier. Lucky for me I had an old amp in my junk pile waiting to be used. I wanted the external amp to power on when the main 7.1 receiver is turned on. However, the max output of the switched plug on the back of the receiver is only rated at one amp. My external amplifier is rated at four amps. A $10 trip to hardware and Radio Shack fixed my issue.
I used the following parts to make a relay switch. You may need different parts depending on what you have laying around your house. Also I am not an electrician. I do not take any responsibility for any issue that can result from making this DIY project.
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I used the following parts to make a relay switch. You may need different parts depending on what you have laying around your house. Also I am not an electrician. I do not take any responsibility for any issue that can result from making this DIY project.
Click here to view the article
