Question about Fusion FEW12PK Car Subwoofer

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Fusion Amp Starts In protected Mode

Everytime I turn my ignition off and back on the amp starts in protected mode. If I take the amp fuse out and back in the LED goes green and everything works until the next time i turn my ignition off.

I have absolutely no idea why it does this. Any help would be greatly appreciated,


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  • mike44412 May 25, 2008

    We installed one today and have the same problem have to unhook the ing. wire to get it to come on



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  • 4 Answers

Check remote wire coming from back of radio

Posted on Jan 08, 2008


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1 Answer

Amp fuse keeps blowing when car is turned off

It sounds like that fuse is supplying power to more than just the amp and is being shorted out in the START mode. Normally I would think the power to the sound system would be cut off by the ignition switch in the START mode. Try to find out what else that fuse supplies power to. You can disconnect suspected trouble areas to see if that helps locate the source of the fault.

Feb 16, 2013 | GMC Cars & Trucks

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MY soundstream LiL Wonder 4.620 is only going in protection mode

Disconnect all speakers Meter power, remote, ground at amp, if all is good move on, if not check main fuses
Turn amp on; If in protect mode then your amp is toast Turn amp on, if not in protect mode then start reconnecting speakers one by one until your amp goes into protect mode, then you'll know which speaker is bad.

Sep 19, 2011 | Car Audio & Video

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Amp goes to protection mode. if the fuse is too small?

Disconnect all speaker connections and rca cables. Leave power, ground and remote wires intact. Try turning on again. If you still have a protection light your amp is faulty. . Double check all connections. Good luck.
A thumbs up would be greatly appreciated if this answer is helpful to you. Worth fixing.

Jul 15, 2010 | Autotek MM125.2 Car Amp

1 Answer

My 450 watt fusion amp is now in ''protect mode''. how can i fix this?

Start by completely turning off the power to it and anything connected to it. Turn all levels down to there lowest volume settings. Check to be sure your speakers are not shorted. Be sure the power voltage is correct. Turn on each of the items, the amp being last. That probably will resolve the problem but I am not that familiar with the unit just trying to help. Most units have stay in protect mode until I cycle the power. Typically they monitor the speaker current hence a short would cause almost an instant protect fault.
Good Luck,

Dec 01, 2009 | Car Audio & Video

1 Answer

Fusion amp soild bold red when the radio comes on

The amplifier is in protection mode.
3 reasons for this...

  1. Improper Load/overheat - wrong impedence voicecoils or wired improperly below rated impedence.
  2. Grounded Power - speaker wires touching, power wire touching ground,
  3. Internal component failure.
if the amplifier will still not go out of protect mode after removing the speakers and jumpering the remote wire to the + terminal - your amplifier needs professional repair.

Thanks for using FixYa - a good rating is appreciated for taking the time to answer your FREE question.

Jul 08, 2009 | Fusion Digital designs EN-AM6004 Car Amp

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Fusion car amp turns on then gos in protect mode

look behind ur headunit could b a wire touching or a piece of metel

Apr 08, 2009 | Car Audio & Video

1 Answer

The amp turns on but goes to protection mode

Have you checked the REM wire, if it is the wiring may have gotten fried.

Or you may need to get new parts replaced within the amp.

Both issues happened to me.

Mar 27, 2009 | Car Audio & Video

1 Answer

My amp turns on and pumps once then it stops bt the amp is still geting power

First try unhooking the speakers and see if it continues to go into protect mode. If it does'nt then your speakers are running to low of ohms required for that amp causing it to go into protect mode. If it still goes into protect mode check your ground, might have a voltage problem and check voltage going into amp. I have read the manual and this amp has advanced circuit protection. So if all I have asked you to do and it still goes into protect mode then amp is faulty and has some output transistors shorted or power supply mosfets shorted. Let me know what you find. But you need to do what I have explained to narrow the problem down. Good luck, Keep me informed. I will be glad to help you thru this. I also have a business of repairing car amps and you will not find anyone cheeper. So if you want it repaired and you feel you can't do it, just send it to me and I will repair. If you decide this E-mail me and we can discuss it in more detail. Just a thought to try and help you out. I have many customers that send me there amps and I repair them and ship them back. A few come from this site. Let me know

Jan 31, 2009 | Lanzar VIBE286 Car Audio Amplifier

2 Answers

Protection mode?

Disconnect all speaker connections and rca cables. Leave power, ground and remote wires intact. Try turning on again. If you still have a protection light your amp is faulty. Hopefully you have warranty. Double check your connections. .A thumbs up would be greatly appreciated if this answer is helpful to you. protection-mode-shonxoarcym4awy4zl1imx4o-2-0.jpg Lanzar

May 25, 2008 | Lanzar Car Audio & Video

1 Answer

Stuck in protection mode

First disconnect the subwoofer wires from the amp, turn the car off and back the amp on? If so your subs are shorting it out, either from a frayed wire, or blown subs.
If it is still in protection mode, check the fuses in the side of the amp.

Mar 21, 2008 | Kenwood KAC-7251 Car Audio Amplifier

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