Question about Rockford Fosgate Punch P4004 Car Audio Amplifier

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My P4004 quit hitting the subs - Rockford Fosgate Punch P4004 Car Audio Amplifier

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Have you check the fuse our the ground maybe the out puts our blown out check if you smell any burning

Posted on May 27, 2011

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Rockford fosgate p4004


You need to check the ohms on your subs an amp . try unbridgen the amp . Go to Rockford Fosgate dot com on the amplifier wiring diagram hopefully that helps 6_28_2013_8_51_12_am.jpg

Jun 18, 2013 | Audio Players & Recorders

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I have a Rockford fosgate P4004 with two 12'


I think you are right about the "fried" part. It would have to be opened up and repaired to be able to use it again

Oct 29, 2012 | Car Audio & Video

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I have a rockford p4004 and the protection light is staying on and am not getting anything out of the amp to my subs. what can i do. i hooked up a different amp to it and it worked fine.


The unit is internally grounded. Something has broken inside and grounding out the power, the amp will need to be serviced or trashed. Try calling Fosgate. They may have a serviceman or "fix it" department

Nov 05, 2011 | Rockford Fosgate Punch P4004 Car Audio...

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Is it enough to power to 12 volge=ahagen 12oowatss dual 4 ohms


your Volfenhag 12" subs are rated at 1200 watts they are only 600 watts rms and the Rockford punch p4004 is only 200 watts rms so the answer is yes it will work but if you get a amplifier that pushes out 500 - 600 watts rms you will love the sound from subs
there is nothing wrong with the Rockford amp it just wont pound out the bass as hard but the good news is you will never blow the subs with it
when buying amps or subs make sure to look at rms rating that is the true power they actually have ie. (sub box says 1200 watt you think powerful but if you divide it in 1/2 you actually get 600 watts rms) don't get me wrong that's a nice rating. for a sub but you will want to match that number with the amps rms rating or lower. The RMS is what makes the car pound the higher the RMS the better
hope this helps

Mar 05, 2009 | Rockford Fosgate Punch P4004 Car Audio...

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Protection light goes on and off


test subs you may have blown the voice coil

Jan 18, 2009 | Rockford Fosgate Punch P4004 Car Audio...

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Is this ok?


yes 2ohm should be fine for that amp no problem

But dont bridge it any lower than 2 ohms.

Nov 26, 2008 | Rockford Fosgate Punch P4004 Car Audio...

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P4004 - Blown Components


if burned components are on output stage or amplifier section on board..Then look at the oposite side of amp..Both amplifier section should be a mirror image oof componentc from other..that way you can know the values of parts.If they are on power supply section ..Then you might need manual if available..

Dec 23, 2007 | Rockford Fosgate Punch P4004 Car Audio...

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Spontaneously shorted, now blowing fuses on amp too.


Time to go to the repair shop. Sounds like you have a blown amp. Good luck.

Feb 22, 2007 | Rockford Fosgate Punch P4004 Car Audio...

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AMP CLICKING OUT


Could be the sub has a shorted or rubbing voice coil, the speaker wires could have rubbed and touching or pinched with the chassis or ground, or the amp has a idle bias proble. The first two can be checked in the vehicle, the last one should be set up on a bench with a steady power supply and speaker load resistors attached and a osilliscope attached to the load resistors and a variable 400 to 1000 HZ tone at the input. You the raise the input and see where the waveform statrts to clip. If it starts to clip right away most likly there is a problem in the output or drivers or the connecting componets.

Sep 28, 2006 | Rockford Fosgate Punch P4004 Car Audio...

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