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Boss R3400 amp sub make heartbeat while protect light on

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 631 Answers

SOURCE: problem with amp...

In virtually all instances where the protection light is illuminated, the amplifier has gone into protection because the output transistors are shorted. To eliminate external wiring problems do the following.

Disconnect all speaker wires from the speaker terminals of the amp and disconnect signal cables from the amp. If it powers up, the wiring needs to be checked. If it still goes into protect, the amp likely has blown output transistors.

If it does have blown outputs, it's is likely due to the speaker wires shorting together when the woofer was out of the vehicle.

Posted on Dec 29, 2007

  • 4 Answers

SOURCE: wiring up amp/installing amp

Disconnect all the wires and make sure that their all connected to the right terminals. If not positively sure trace all wires back to source. If you ground and power is swapped it will automatically go over to protection mode.

Posted on Apr 05, 2008

  • 77 Answers

SOURCE: kole amp in protect mode?

Are you setting the bridge switch for both left and right or are you trying to run both subs off of one set of terminals? If you running the subs off one set of terminals you are effectively running the amp below 2ohms and thus the amp is not 2ohm stable and you will destroy it.

Some amps actually all ready run a bridged output for left/right operation, this could also be the reason why the protection circuit is kicking on.

Either way it's a component mismatch and you either need a stronger amp or different subwoofer setup.

Posted on Mar 09, 2009

  • 11 Answers

SOURCE: Boss GT780 4 Channel 1000 watt mosfet amp protect light

fuses , ground wire , and battery fuse

Posted on Jun 18, 2009

  • 16 Answers

SOURCE: i have a boss amp CX3500D and the red light just

check the ground and check rca cords they somtimes do that make sure there are no hot wires touching hear try this pull the sca cords out off amp a little and see if if the light turns green if it does replace rca cords

Posted on Nov 30, 2009

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2 Answers

I had my boss 2400 watt 2 channel amp hooked up in my car. I had one sub on each channel and one of my subs blew. I unhooked the positive speaker wire on the blown sub, everything was fine. Driving down...


If your amp started smoking, probably not. Due to your description, did the other sub really blow? I would hook it up to another amp to test it. It may have been a channel in your amp. As for repairing the amp, the parts and labor to repair will probably cost you more that to just replace the amp.

Sep 06, 2011 | Boss Car Audio & Video

1 Answer

Mtxjh1200 , the light with the lightning bolt blinks and subs make a thumping sound like a heartbeat


ur rca wires or its the holder itself if the subs do it when the rca wirtes are off the oits the bord inside the amp

Jun 21, 2011 | MTX JackHammer JH1200 Car Amp

1 Answer

Why is my sub heartbeating and my amp in protection mode


Sounds like a shorted speaker wire. Try disconnecting speaker from amp and see if protection light goes out- if so replace bad speaker wire. Only other issue i can think of from your short description is that you might have a bad ground going to amp or the remote power wire is bad. try running a new ground wire to a clean metallic spot on you cars chassis close to where the amp is located. Good ground = good clean sound

Mar 04, 2011 | Car Audio & Video

1 Answer

BOSS AUDIO SYSTEMS SE950 Car Audio Amplifier: I have a SE950 boss amp, hooked to 2 audiobahn 12"...


Sounds like you are over working this amp for sure.. Upgrading your power wire & battery might help, check your gain level on your amp to. This is not the volume for the amp. Its to get both amp and the cd player on the same page... And most of all if your subs are wired up to .5 ohm stable, see if your amp do the same... My answer to this ?? Upgrade your amp, Boss audio was never a good company to me, but that is my opinon. Audiobahn set up all the way..

May 16, 2010 | Boss AUDIO SYSTEMS SE950 Car Audio...

1 Answer

AMP STOPPED WORKING. PROTECTION LGHT KICKS ON AT STARTUP & POWER LIGHT KICKS OUT


your ohm load is to low. tell me what kind of subs you have and what size, and what size amp do you have? and how many channels is it?

Oct 21, 2009 | Boss CHAOS CH450 Car Audio Amplifier

1 Answer

Red status Light


If the protection LED is lit, the amp is in protect mode and probably has shorted output transistors. To eliminate other possible causes, read through the following page:

Amp in Protect Mode - Trubleshooting

Let me know if you have any other questions.

Nov 07, 2008 | Boss AUDIO RIP-596 2-Channel Ripper Series...

1 Answer

My "Power Acoustik OV2-420" has a problem. Some advice please!!!


It appears that the output transistors have failed. To eliminate other possible causes, read through the following page. Let me know if you have any other questions.

Amp in Protect Mode - Troubleshooting

Oct 04, 2008 | Power Acoustik GOTHIC OV2-1200 Car Audio...

1 Answer

Low amp output


Make sure the BOSS isn't in "Protected" mode (Red led lit) and connect the speakers properly (check the connections if they are in "bridged" mode).
Also, make sure you set the cross-over, bass boost setting, bass volume control and the bridge mode according to the speakers you are connecting. Check the input level too.
The BOSS amplifiers are of very poor quality and it can be easily broken. Maybe yours is broken.

Feb 15, 2008 | Jl Audio E2150 Car Audio Amplifier

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