I connected the 3mm audio input from the lighting controller to the RCA input on my amp. I have a horrible loading hum throughout the sound system. I had to remove. Otherwise, I assume there is a built-in microphone to detect noise. My setup is in the rudder of a pontoon boat. I'm not sure how well this will work unless I blow up the system. The instructions that come with it are terrible. That's why I'm thinking about the microphone. The instructions say nothing about how to set the sound.
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