Sorry, I didn’t read that. I’ve read your whole post now.
You said you used some different plugs for the trigger cord to get it to work (I’m assuming the Emo and Denon have different sized trigger ports). What did you use to get this to work? This will make a difference due to the grounding polarity on 12V DC. I would eliminate the trigger issue and disconnect the trigger cord. See if the problem persists with them disconnected. If it does, then the problem is the Emo. There is no other reason that should be causing the protection circuitry to kick in besides a resistance at the speaker (which will put it into over current if you are playing music or not). If the Denon did not go into protection mode when playing that speaker, then the problem is the Emo. If the Denon tripped out, then it’s the speaker (one of the drivers).
