Question about Rockford Fosgate Punch P4004 Car Audio Amplifier

1 Answer


I have a Rockford Fosgate p4004 amp that has been in my truck for about 6 months, just 4 days ago it started going into safe mode if I turn the volme above 9. It is running my component speakers and I have another amp that is running my sub, that one is working fine.I have 5 guage wire powering it. What could be causeing it to click out? I have already pulled it out and checked to make sure there was nothing distorted on the bored and made sure all my wiring was tight but that hasnt helped.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 3,130 Answers

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.

Posted on Sep 28, 2006

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

Wiring Rockford p4004 amp

how to install or where to install?

May 18, 2014 | Rockford Fosgate Car Amplifiers

2 Answers

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 Amplifiers

1 Answer

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...

2 Answers

Audio cutting in and out protect light turning on Rockford fosgate p4004

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. Your amp is clipping. Try adding a capa A thumbs up would be greatly appreciated if this answer is helpful to you. audio-cutting-in-out-protect-light-peeu4x5nsxvd53n2rwetiqa4-3-0.jpg

Jun 20, 2010 | Rockford Fosgate Punch P4004 Car Audio...

1 Answer

I need parts for an amp

callem up im sure someone in tech dept. call help ya jus cus its not on a screen dosent mean rockford doesnt have it....i mean they made the amp n all .....u know

May 14, 2010 | Rockford Fosgate P3001 Car Audio Amplifier

1 Answer

I need parts for an amp

Its a shame that you dont have the covers for this awesome amp. You can run amps without the covers but if metal crosses any conductors your screwed. If you try emailing Rockford they might be able to help( I am cheap and would either buy one that doesn't work and use covers or make a box to bolt amp into. If you build a little box make sure to vent it so the amp can cool.

Mar 23, 2010 | Rockford Fosgate P3001 Car Audio Amplifier

1 Answer

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...

1 Answer

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...

1 Answer

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...

1 Answer

In thermal mode

if i understand correctly its possible that the amp shorted out during the bump...check all connections and fuses, if all is fine then the amp needs out for those bumps next time.

Nov 11, 2007 | Rockford Fosgate Punch P4004 Car Audio...

Not finding what you are looking for?
Rockford Fosgate Punch P4004 Car Audio Amplifier Logo

Related Topics:

123 people viewed this question

Ask a Question

Usually answered in minutes!

Top Rockford Fosgate Car Amplifiers Experts

Pablo Gonzalez

Level 3 Expert

733 Answers

Tygh Duval
Tygh Duval

Level 2 Expert

290 Answers

Robert Rankin

Level 2 Expert

338 Answers

Are you a Rockford Fosgate Car Amplifier Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides