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Originally Posted by calreef18
when I switch from say tuner to cd mode or vice versa, or when the head unit turns on at first, I get a *thump* sound from the sub, what the heck is that about?
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Turn on/off thump from the amp.
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finally found some info, looks like a surge from the headunit and it was suggested I could put a relay imbetween, any tips on doing that?
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I don't think a relay is going to help in this case (turn on/off thump).
But if you want to try it, heres how you wire it up:
87: constant +12V
87a: not used
85: ground
86: remote turn on lead from headunit
30: output to amp. wire to remote turn on the amp
You need a 12V automotive spst or spdt relay. SPDT will have a terminal labeled 87a, but you won't use it. SPST does not have 87a.
