Question about Rockford Fosgate Punch 401S Car Audio Amplifier

2 Answers

Amp or something cutting out.

I have a rockford fosgate 401s punch 1200 watt amp. It was working well for about 2 days, but now it cutts out only sometimes and then kicks in again. When it works it pounds so I dont think I blew the amp. And like I said the amp only cuts out once in awhile and only for like a second or two. Am I wiring the subs wrong? I have 2 svc 4 ohm subs and i have the positive and negative wires of the subs going into the 2 channels on the amp, so im not wiring parallel or in a series. Is that wrong?

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  • ronnieyannon Apr 22, 2009

    Yeah when I have my amp turned pretty much all the way up. No I dont have one of those. Can you explain what a 1 farat capacitor is? And where can I get one?

  • Dalynn Turner May 11, 2010

    Is this referring to high volumes? Do you have a 1 Farat capacitor to lighten the load on the battery? If not, this is a so called power spike. The battery is not putting out required voltage to carry out your amp's peak power. a.k.a. "Your lights dim at night"

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Power caps store power from the battery and they feed constant power to the amp so you dont get no drainage! this could be one reason..

have you bridged both subs and wat gauge wire are you using.

these amps can only handle one bridged sub at 4ohms and this amp is recommended that u use 8gauge or higher. if your running to subs i normally reccomend using 4 gauge power wire as you get more rms power feed to the amp

you can get a power cap or anyother accersory cheap online at my suppliers.. caraudiosecurity << click to enter >> hope this helps and please rate me :)

Posted on Apr 23, 2009

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1 Answer

What is the output of the 451s rms power


Dynamic Power Rating (measured at 14.4V):
  • Bridged Into A 4-Ohm Load: 450 watts x 1
  • Per Channel Into A 2-Ohm Load: 225 watts x 2
  • Per Channel Into A 4-Ohm Load: 115 watts x 2

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What is the auctual watts fpr the Rockford Fosgate Punch 401S?


rockford fosgate doesnt have watts its considered monoblock it gives off watever the speakers want....it gives them the power they need

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Does the Rockford 401s amp have a fuse?


Yes. Rockford fosgate has a cover over all of the connections, crossovers, and various other controls. Just remove the cover with the allen wrench they sent with the amp or find a set of allen wrenches if you don't have one. Under this cover you'll find what you're looking for.

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1 Answer

Connect rockford fosgate amplifier & speaker together


Assuming your P3 has a single voice coil (it will have only one place to plug your wires into) you will be running this in a bridged mode. You will take the left (+) coming off the amp and plug it into the (+) on the P3. Then take the right (+) from the amp and plug it into the (-) on the P3. This will make your amp push 500 watts to your sub. Now on the amp make sure your adjustments are as follows: Signal input switch is set to unbalanced for RCA input. Left Phase switch is set to 0. Right phase switch is set to 180. your X-card should be set to low pass. And adjust the gain for both R and L equally so it has equal power from both channels.

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1 Answer

Amp cutting out


Sounds like your amp is over heating. it wouldnt have nothing to do with a power cap as it would just die. your making your amp work to much. look into bying a line driver as this will boost the volume going into the amp wich will also make the subs louder

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1 Answer

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if your sub will handle it, bridging it will give you more power. The best thing to do is to find out how much power the amp puts out ( RMS ) and if it is in your power handling range bridge it. It sounds better and gives you a harder punch because of more power.

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