Question about Car Audio & Video
When I plug in my Rca connections, the protection light comes on. I
have the speaker wires hooked up to the amp, but no the subs. The only
things connected are the power and the Rca connections. However, the
protection light only comes on after I hook up the Rca. This problems
arose suddenly and I do not know what the issue is. I am not very
familiar with car audio, so if someone could help me out, that would be
fantastic. Also, my younger brother has told me that I may have loose
connections at the head unit, because the left side of my car likes to
go out randomly. Are these two issues connected?
My speakers wires were touching and the amp kept on going to protection, i have now changed my wires and put new speakers but still goes on protection.
You say the protection mode only occurs when you plug the RCA's in. Does it have to be both RCAs or just one?
The other end of the RCA cable is plugged into the HU?
It possible the RCAs have too much DC voltage on them, causing the amp to go into protection.
Is there a short in the RCA cable?
I would definitely check out the RCA connection at the back of the HU, as it sounds like there could be other issues there. Make sure the RCA connectors aren't touching any other metal (especially +12V).
Posted on Mar 14, 2008
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Posted on Jan 02, 2017
Tips for a great answer:
May 08, 2013 | Car Audio & Video
Should the amplifier go into protect mode, simply disconnect all RCA and speaker leads, while keeping +12 volt, power ground and remote leads connected.
1. Now turn the amplifier back on, and if the diagnostic LED lights, the amplifier has an internal fault.
2. If not, plug the RCA cables back, and reset the amplifier. If it goes into diagnostic now, the fault lies in the input, either with bad cables or source unit.
3. If the amplifier seems fine with RCA cables plugged in, connect the speakers, one at a time, and if one of the speakers or its wiring is faulty, it will activate the diagnostic
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