Question about Rockford Fosgate P3001 Car Audio Amplifier

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Bass control stopped working

In my attempt to re-connect the ground wire to back of the amp, it grazed the positive connection causing a big spark. After re-connecting the bass control light is on but moving the controller has no affect. Have I messed up the controller or worse yet have I screwed up something inside the amp? The bass sound appears to be locked up at the minimum.

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On rockford amps, the bass control knob needs to be connected to get the maximum output (+18 db gain i believe). If you did this to the power wires, then yes, you may have at least damaged the bass control knob. Try replacing this to see if you get all of your gain back. If not, then you have damaged something inside the amp...maybe a capacitor or power supply inside. If that's the case, you'll need to get the amp looked at by an electronics repair technician or local stereo shop.

Posted on Aug 11, 2008

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The main problem I have having is I am getting power to my AMP but no power to the subs. I tested my AMP and subs in another car and everything worked so I know my hardware all works fine. I had someome...


okay , well you need to make sure all your conections are in the right spots, and that your IN LINE FUSE, between your amp and battery, the big glass one is not burnt, just take a look at the metal piece inside , if its a sold metal piece its good, if its burnt in half like a broken bridge it needs to be replaced. the next thing is the fuse on your amp, you need to make sure it is not burnt also. Check your remote that it is hooked up to the right wire. then check that your sub/speaker wires are connected properly and secure. YOUR GROUND WIRE IS HUGE HERE also. MAKE SURE IT IS GROUNDED TO A GOOD SPOT, YOU MAY HAVE TO MOVE IT AROUND A FEW TIMES TO FIND A GOOD GROUND!!!! if you check all of these things, it should work fine.. you can fiddle with your amp and bass settings levels. turn em up so when it works you know it, but not too much you dont wanna blow nothing :)

Mar 12, 2010 | Car Audio & Video

5 Answers

My speakers do not work but my subs do.


Good day sir, hi, there reason why speakers don't work could either be the folowing:
  1. you speaker voice coil is burnt, to test, you need to get the door speakers out and locate the terminals, prepare a 1.5 double AA battery, use this to test you speaker. connect a wire from the negative of the battery to the negative of the speaker, and the positive battery to the positive terminal of the speaker with a series of gentle taps, you should hear clicking sound. if not replace the speaker.
a9b085b.gif Do it on the other door speaker.

2. check your speaker line from the amplifier to the door speaker.
3. check your power amplifier for loose and improper connection.
4. check your power amplifier itself. Thats it.

Its a little work, visit your local electronic repair shop if your speaker still won't work.

Oct 08, 2009 | Car Audio & Video

1 Answer

Amp doesn't come on


Hello rheabarb,

You did not say whether or not you checked the wiring going to your subs. Many times, a shorted or grounded speaker wire will cause an amp to fail. And if the amp powers up OK with the subs disconnected, I'd suspect one or more of the wires.

Hope this helps.

May 19, 2009 | Clarion APX1300 Subwoofer Mono Amp - 300W...

1 Answer

Audiofonics adf-241 no power all wires connected fuses ok.


Hello pimprascalz,

Many amps will go into protect mode if one of the speaker wires is shorted or grounded, or if the voice coil(s) are defective. Try disconnecting the speaker wires one at a time and see if the amp still goes into protect upon power up. Likewise, some amps will go into protect if one of the inputs is grounding out. Again, to troubleshoot, disconnect them one at a time and try the amp. Next, make sure that the amp itself is not grounding. Most amps need to be mounted to a nonconductive surface. If the case contacts the frame of the vehicle, it can cause a problem. If the problem is not in the speaker wires or the input cables, the amp case is not contacting the vehicle frame, and you have checked your power, ground and turn-on leads, then the amp itself is probably faulty.

Hope this helps.

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1 Answer

My kicker 10'' L7 sub works when the volume is low, when the volume is turned up the sub. stops working. Why?


Check wires that go into the speaker.Try turning the bass down than turn the volume up.If it sounds good when volumes down and as you turn it up it gets worse your amp isnt putting out enough power.whats the amp? power wire gauge should be same as ground.what gauge are they? Check ground to make shure you are getting a good connection & power wire isn't loose at any of the connection what size fuse are you running under the hood?

Mar 01, 2009 | Car Audio & Video

2 Answers

Problems With My Jensen 425 Watt Amp


It's normal to see sparks when reinstalling the fuse. But they should only be produced inside the fuse holder when the fuse makes contact with the terminals of the fuse holder.

Did you reinstall the capacitor with the correct polarity? If you installed it backwards, it may have blown out or could be causing other problems.

Did you possibly bridge the connections in the amp when you soldered the camp in?

It's possible that something failed and caused the cap to melt out of the board. The failed component may have caused the fireworks inside the amp. 

If you're new to repair and want to lear more, visit the following site. If you have questions, feel free to ask.

Basic Amplifier Repair Primer
http://www.bcae1.com/repairbasicsforbcae1/repairbasics.htm

May 22, 2008 | Jensen JPA285 Car Audio Amplifier

2 Answers

Bass sounds flat when volume is increased


probably your power is too short, increase your gauge wire, and your ground wire of the amplifier has to be shortly as possible, and the positive has to be enough to support peak power, you can also put a big capacitor on the positive wire to give some more power while the bass peak.

Apr 26, 2008 | Earthquake Sound PH-D2 Car Audio Amplifier

1 Answer

Bass perfect when I drive but as soon as I drive slower it goes softer?


Sounds like maybe you are not getting enough power to your amp. It sounds like you have a pretty powerful amp and it could be you don't have a large enough cable going back to your amp. If you have access to a volt meter then you could take a reading of your "12volt" power connection at the amp while stopped and amp running to see if you do indeed have 12 volts or better. If it is getting down to 11 or 11.5 volts then you will need to improve that. I have a saying that when you have a huge amp you must wire it as if you are trying to power your cars starter motor from the trunk and wire accordingly. And that means your ground connection too. Don't forget the ground connection from the battery to the car's chassis. Maybe this will help. Good luck.

Mar 31, 2008 | Generic Memory Clif Designs 4000W Digital...

1 Answer

2 12'' cvr kickers


ya u allreadyfound ound out the problem u have factory amps there u go after market

Feb 27, 2008 | Kicker CVR12 Car Subwoofer

1 Answer

Subwoofer help


hard to tell whats causing this .Just curious make sure speaker wires going to subs are POLARIZED meaning positive from amp is with positive at woofer and NEGATIVE is with negative at woofer.When these are crossed and when volume is raised you will hear the bass cancell each other out..

Dec 06, 2007 | Car Audio & Video

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