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Cette vue éclatée n'est pas un tutoriel de réparation. Pour réparer votre Rockford Fosagte P300-12, utilisez notre manuel de réparation.

  1. Rockford Fosgate P300-12 Teardown, Rockford Fosgate P300-12 Teardown: étape 1, image 1 de 1
    • Front view

  2. Rockford Fosgate P300-12 Teardown: étape 2, image 1 de 3 Rockford Fosgate P300-12 Teardown: étape 2, image 2 de 3 Rockford Fosgate P300-12 Teardown: étape 2, image 3 de 3
    • Remove the 8 coarse thread wood screws and gently pry the plate out

  3. Rockford Fosgate P300-12 Teardown: étape 3, image 1 de 2 Rockford Fosgate P300-12 Teardown: étape 3, image 2 de 2
    • Carefully remove the 3 knobs and the 1 screw between the 2 10A fuses. then the plastic face should pop off

  4. Rockford Fosgate P300-12 Teardown: étape 4, image 1 de 3 Rockford Fosgate P300-12 Teardown: étape 4, image 2 de 3 Rockford Fosgate P300-12 Teardown: étape 4, image 3 de 3
    • Crossover / Gain

    • Power Supply and output FET's

    • Power Supply Transformer

    • Output Filters

    • The 2 boards are held together by 4 screws on the edges of the PCB, gently pull them apart, they will only be held together by pin headers. Here you can see the 2 output filters and the power supply step up transformer

    • The board with the FEMALE pin headers is the front board with the plugs on it. the crossover network consists of JRC 4850's

  5. Rockford Fosgate P300-12 Teardown: étape 5, image 1 de 1
    • There are 4 of these "GA7E1S" FET's that i cant find any info on. i would assume by looking at the boards that 2 are the power supply and the other 2 are the outputs

    • There are NO heatsinks anywhere in this unit which i find amazing. but the FETS most likely use the massive copper planes on the board as the heatsink

  6. Rockford Fosgate P300-12 Teardown: étape 6, image 1 de 2 Rockford Fosgate P300-12 Teardown: étape 6, image 2 de 2
    • More jelly bean logic around the board

  7. Rockford Fosgate P300-12 Teardown: étape 7, image 1 de 2 Rockford Fosgate P300-12 Teardown: étape 7, image 2 de 2
    • The custom 12" driver. it appears to be a DVC driver, but it just a SVC with 2 pairs of leads going to it

    How do I find a replacement sub.what is impedance and wattage?

    Jason Foster - Réponse

    not sure i never pulled it. i would assume 4 but it could very well be a 2 ohm unit. wattage at least 300W as thats what the amp is

    bassblaster505 -

    The magnet on mine broke can it be replaced

    Chris Apala - Réponse

bassblaster505

Membre depuis le 01/25/17

539 Réputation

4 tutoriels rédigés

22 commentaires

Nice, if you can do one on pulling the sub out that would be great. I think it might be glued in.

Cometa Soulstar - Réponse

I have the 10” version of this sub but believe the amp is identical. I’d like to steal the amp from this to use in a new enclosure. Any idea how many ohms this could drive?

Ian Pitts - Réponse

Im not sure, when i did this teardown i never thought about doing an ohms test on the driver. it might be a 2 ohm driver, but if you have the 10”, pop the plate amp out and stick a meter on the driver lol

bassblaster505 -

I have a p300-12 , but the box shape is all wrong for my ‘07 FJ. What obstacles do you see after the teardown for transplanting the amp and sub into a custom fit box? Thanks in advance!

Jason Todd - Réponse

i dont see any issues with that idea. just when you get a new box get one thats similar in volume as the original and also sealed as i have no idea how the driver would perform in a vented enclosure. just keep the original rockford box so if you decide to sell it down the line you can reinstall it

bassblaster505 -

Thanks man, I’ll let you know how it goes for future reference.

Jason Todd - Réponse

Any update on the custom box for your FJ? I am wanting to do the same and was wondering if it would work.

Brandon -

Anyone have a solution to the fuses blowing after 4-6 min of firing ….. I pulled the amp and soldered new leads to the pos and neg on the woofer and connected it to a new amp and it works but I’d really like to fix this all in one amp to clean up the trunk …. anyone have an amp with a blown woofer or a direction on determining the culprits on the boards ?

Alejandro Vazquez - Réponse

The subwoofer on my P300-12 blew and I’m trying to get a replacement sub. Problem is, I don’t know if it’s a 2-ohm or 4-ohm sub. This is the only tear down I could find and was wondering if you had any insight.

John A - Réponse

I Do not as i never though of pulling the driver out. dummy moment

bassblaster505 -

When in doubt always use the higher ohm.

Lower ohm drivers than any amp can deliver will burn outputs in the amp.

Albert Einstein -

I have a P300-12 and yesterday it stopped playing sound, i also hava a p300-10 i tested this one in my car and it works. the amp of the p300-12 powers on but don’t play music anymore.

Any suggestions? :)

Quinten Leyssens - Réponse

can you make a tutorial on how to repair the bass knob or how to jumper the conections on the board thanks

Angel Meza - Réponse

Bass knob is just a potentiometer on a PCB. Should be as easy as resoldering cracked joints on the inside or just replacing it

bassblaster505 -

Hello! I Have a problem with 2 transistors q6 and q7 ,what type are they? Mine's is burn . I can't see enithing on them. Thank's in advance.

Alin - Réponse

Did you ever get an answer to your question? Do you still need an answer?

Dustin Evans -

I ended up with my ground cable coming loose and ultimately burnt up the tinsel wires on the sub. I ordered a 300 watt jl audio that im goung to replace it with but now i cant seem to find my input plug to hook up my rca cables. Is there a way i can just use an rca cable, strip the wires on other end and solder it into the sub box? I dont want to wait for a replacement plug is my issue and im more than capable of doing this. Guidance would be appreciated though.

Steven VanOstran - Réponse

Great pics. Took mine apart to sort out that the driver was bad. Cone would not move smoothly - resistance and then jump like it was indexed. could not find exact replacement, so ordered an RF R2D2. Will wire in series for 4ohms.

Doug M - Réponse

how did it work out with the RF R2D2speaker? i want to replace my blown speaker as well. cant find any information on this

Max Tapper -

My ps300-10 dont have power. All fuses seem to be ok, whatbcould be the problem?

Desmond Foster - Réponse

Ohm test the fuses. If fuses are okay, issue would be board related. Also make sure its getting remote signal to turn on

bassblaster505 -

What’s the depth measurement of the sub

Carl Pilling II - Réponse

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