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How to fix blown sub (replace fuses etc)...? stop protective light illuminitating?

WE'VE BLOWN THE SUB FORCING THE PROTECTIVE LIGHT TO BECOME ILLUMINATE... WHAT OTHER THAN FUSES COULD BE THE ISSUE? WHERE DO WE LOCATE FUSES AND/OR OTHER POSSIBLE ISSUE/S (ANY SUGGESTIONS)??? REALLY APPRECIATE ANY ASSISTANCE..

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  • 221 Answers

The first thing to try is to disconnect the sub and all speakers from the amp's output block. The only things that you need connected to the amp are the 12V power, the ground wire, and the remote wire to turn it on. If the protection light comes on with only these three wires connected - your amp has been damaged internally and will either need to be repaired or replaced.

Posted on Jul 27, 2013

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

StuartB
  • 807 Answers

SOURCE: blinking protection light on mrv-t757 amp

Could be the power supply or output stage electrolytic capacitors.
Possibly breaking down/drying out inside.

Posted on Mar 17, 2008

  • 631 Answers

SOURCE: Protection light won't stop blinking/ Subs don't work

The amp probably has shorted output transistors to eliminate other possible causes, read through the following page. Let me know if you have any other questions.

Amp in Protect Mode - Troubleshooting

Posted on Oct 07, 2008

cuvilldj
  • 14 Answers

SOURCE: INFINITY AMP PROTECTION LIGHT FLASHING

Overload maybe. If the amp is run at an improper impedence, the amp will shut down. If you are "CLIPPING" speakers / subwoofers the light will blink to indicate a hard clip . Example: 4ohm/2ohm stable amp with 4 ohm subs wired at 1 ohm.

Posted on Jan 29, 2009

HitWizard
  • 67 Answers

SOURCE: INFINITY AMP PROTECTION LIGHT FLASHING FOR 5 SECONDS

I have an Infinity amp as well, and I was having the same issue for a time. The amp is protecting itself from some sort of overload. It could be the Ohms load on the sub, but I would guess not. Make sure your low pass filter is set to LP and not HP or Flat. Then check the RMS on your subs and match that to the Amp RMS. Once I did all that I found that everything worked fine, for a time. It started doing this again, and I checked the fuse and it was blown badly. It seems that the fuse setup on some of these Infinity amps is not as good as one would hope, because the charge was bridging the gap and frying out my fuses. It was like a spark would jump from one side of the fuse to the other without travelling the fuse itself, and this was causing my protect issues. I pulled the fuse, got a new one of the same rating, but I placed the fuse in with a little piece of rubber in between the 2 contacts, and then connected to the fuse block. I have not had problems since.

Posted on Feb 02, 2009

  • 14 Answers

SOURCE: i think ma kicker kx1200.1 amp is blown or ma kicker L7 are gone

that would be the amp. sorry to say. when a wire crosses over, it sends a shock through the amp, there are a few things to try just to see if you fried the amp. the first thing to try is to move your ground to a different location. second thing to look at would be the fuses. alot of times the fuses will blow at the slightest shock. the amp will still turn on if you have an amp with 2 fuses, it just wont be getting all the power it needs, which could be causing your problem. also, it is worth the hour and a half to mount everything down in your vehicle. you might check the kicker website, because i have herd rumors that kicker offers a lifetime warranty on almost all of their products. best of luck, and i hope you didnt fry your amp.

Posted on May 01, 2009

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If the amp is blown you can send it to people on ebay and get it fixed pretty cheap. Good luck!

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