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Rockford fosgate p400-4 cuts out/ goes to protect mode

I have a rockford fosgate p400-4 pushing 2 pair of rf p152-s component speakers- when i turn the volume to a high volume the amp cuts off & on- goes into protect mode comes back on then protect mode etc. etc.- runnin 0 gauge wire to a power & ground blocks shared with a rf p1000-1bd -

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Rockford Fosgate 800a2 To 2 SVC 2ohm subs

Ok.. Bridge the two sub into 4ohm than bridge to amp.


So. this how it goes.

sub1 + -
to      | |
sub2 - +
=      4ohm
       

           From Sub
                Two
            -          +  
            |           |
amp (L) - + (R)- +


This will use the full potiental of RF 800a2 amp. I believe it like 1153 watts max out.

Posted on May 29, 2008

  • 149 Answers

SOURCE: jl audio 1000/1 low voltage -keeps shutting off at high volume

You should definitely upgrade the power wire to the sub amp to 4 gauge -absolutely your choking your amp its starving for current-poor thing is starving !!!!!!!

Posted on May 12, 2009

laseramp
  • 309 Answers

SOURCE: 401s Rockford Fosgate Amp. Not powering on,just protect lite is on.

the problem is mostly with your audio side of the amp. i have a 800 Rockford punch series amp hooked in series running at about 15 vdc at 2 ohms stable for now. but the amps left front power side transistors overloaded and smoked out, i will be replaceing my mosfets soon. Now on that side your issues apear to be related to the signal side of the amp. when you hooked the amp up tell me breifly did you hook the rca inputs to the back of the sterio and did you select the proper rca inputs for the amp? also note that amps have a potentiomater that can be tuned up or down to allow the volume or wattage to go up or down threw the system. if it's turned all the way down you'll here nothing. but often you'll get a pop sound or quickly see the speaker move a bit. this indicated the signal side of the amp has signal comming in but no output, just look for a turnable small screw inside the amp top or side. and turn up acordingly. note: to much output will damadge your system. not just the amp. ;)

Posted on Aug 28, 2009

  • 3 Answers

SOURCE: rockford fosgate 450.4. 1st protect mode, now blows fuses...

smell it !

Posted on Oct 13, 2009

  • 31 Answers

SOURCE: the overcurrent light on my sony xplod amp

Contact eric @ Capital Audio & Electronics Repair in Tallahassee,Fl 850-339-1130 we repair all namebrands & models

Posted on Mar 20, 2010

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1 Answer

Hey I have a rockford fosgate t2500bdcp-1 when ever the bass is about to hit the amp goes to protect mode and comes back on


If you can tell that it is about to hit and the amp goes into protect mode, the amp is being over driven on the input.

Feb 06, 2017 | Rockford Fosgate Car Audio & Video

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Protect mode?


You added speakers in parallel which reduced the effective impedance to to a value low enough that your Rockford Fosgate amplifier had to enter protect mode to prevent damage to its output stages.

Jan 22, 2014 | Car Audio & Video

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Rockford R-1000-1D going into protect. Hooked up to two P3D212's. Wired at 2 Ohms. Not to mention checking and double checking and triple checking all the wiring to and from the amp. What could be...


  • First of all this amp is not "bridgeable" per the data sheet and Rockford Fosgate's. Short story your overloading the amp. You may be able to physically run it "bridged" but it is going to kill the amp. No doubt the set up will pound... itself right into the amplifier graveyard. The amp does not have to get hot to go into protect mode, it only needs to sense a malfunction as well.
  • Something else to. The speakers are rated at 2 Ohms as well as the amp (2 Ohms) That means the least Ohms you can but to the amp is 2 Ohms. When you bridges them 2 speakers you drop it down to 1 Ohm. Unsatisfactory for the Amp to function properly.

Tony

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I just need to know if the crossovers that come with the T1652-S Rockford fosgate have fuses . to prevent the speakers and tweeters from being burn out. or for safety purposes


The fuse like componets in the crossover are not fuses and do not provide absolute protection from the speakers blowing. As you turn the volume up you will notice that these fuses will begin to light up along with the music. Whats happening is as they light up they create resistance to help prevent the speakers from blowing.

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Quick question, amp problem


make sure you ground wires arent shared, meaning run each ground wire from each amp to its own grounding point

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that amp should work fine with those speakers,just make sure that they(speakers)are wired for 2 ohms.at 500-600watts coming from amp, you should be getting 250-300 watts per speaker,just dont crank your gain too high on the amp.

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check your sub woofer connection if you have multiple subs the could be wired in a parallel or with has to many ohms that my cause it to not hit right and cause the amp to get really hot and cut in and out

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