What you need
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Carefully remove the 3 knobs and the 1 screw between the 2 10A fuses. then the plastic face should pop off
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Crossover / Gain
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Power Supply and output FET's
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Power Supply Transformer
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Output Filters
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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
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The board with the FEMALE pin headers is the front board with the plugs on it. the crossover network consists of JRC 4850's
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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
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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
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The custom 12" driver. it appears to be a DVC driver, but its just a SVC with 2 pairs of leads going to it
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Here's my February 2025 update. i Finally have pulled this P300-12 again to do what i have been requested a few times, and that is to pull the actual driver itself
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Once you remove the 8 3MM hex head bolts the driver is not glued in but it does fit very snug with the textured vinyl covering making it very difficult to remove from the front. It was MUCH easier to pop out from the back sticking my hand through the amplifier hole.
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Here we again see the twin pair of leads going to the SVC driver, they really do NOT want you to remove this thing, each spade terminal is soldered onto the driver!
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And the answer to the comments, the Rockford Fosgate P300-12's possibly custom spun driver is 2 Ohms
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23 Comments
Nice, if you can do one on pulling the sub out that would be great. I think it might be glued in.
I have the 10ā version of this sub but believe the amp is identical. Iād like to steal the amp from this to use in a new enclosure. Any idea how many ohms this could drive?
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 10ā, pop the plate amp out and stick a meter on the driver lol
I have a p300-12 , but the box shape is all wrong for my ā07 FJ. What obstacles do you see after the teardown for transplanting the amp and sub into a custom fit box? Thanks in advance!
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
