20 Most Recent Rockford Fosgate Punch 401S Car Audio Amplifier Questions & Answers

Since I do not know your technal capabilities I can not suggest that you fix it yourself. I would definitely look into finding a reputable service shop that deals with car audio. Not every electronic technician has the know how to attack or attempt such a task.

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

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Rockford Fosgate 401s 400 watts RMS x 1 bridged

to connect another amp without running new rca's from the head unit

If you only have the sub connected to the amp, the other speakers would still play, if they are just connected to the head unit. I would check for power and remote power to the amp, and check the ground, if those are ok, I'd say the amp is bad.

You're not going to be able to get that - it's considered proprietary information and won't be made available to the public.

Can somebody email me the schematic for the Rockford Fosgate 401S?

You might be able to have it fixed. Some amp companies make their own parts, so you would have to sent it to them. If you can find someone to diagnose the problem first, you could save yourself some money. I have repaired amps with parts from Radio Shack myself.

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

you will have to get a amp kit. run a power line from the battery to the am and a remote line from the radio to the amp then run a ground from your car from (scratch the paint off) and connect that to the amp,connect your speakers to the amp.

Sorry to say but it's usually a blown resistor and will have to be taken in to get fixed. Just be positive that your ground has a good connection, your remote is powered, and no fuses are blown, people have missed this stuff (mostly the ground) a lot. My amps have been between 50 and 150 to get fixed, sometimes it's worth it, other times not, kinda up to you. Good luck.

Crutchfield.com

I would say the wiring, in particular the earthing for it, also check any "Compression" fixtures.and check ALL joints etc. To be sure give the actual Amp a gentle tap, and see if that brings on the fault.

Do you know how many ohm's the two 10" subwoofers are ? That is important as there are many ways to wire multiple subs. If you dont know then post what make and model the subs are.

Post back and I will try to be of further assistance.

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Usually all speakers are wired through a "Crossover" network, a Filter system. Speakers usually are wired in Parallel. Using & observing the + & - Polarity.