Disconnect all speaker connections and rca cables. Leave power, ground and remote wires intact. Try turning on again. If you still have a protection light your amp is faulty. Hopefully you have warranty . Send to Rockford Fosgate for repair
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Are the power lights on? This is an old amp. There should be a fuse on the red wire or the wire to the battery. Some people cut the fuse out. If you don't have a fuse and the lights are not on then check your remote wire coming from the stereo. It should be blue. Check power to the red and blue wire with a meter or a test light. If you have power on both of them then the amp is no longer operable.
It sounds like you've got a short to ground in either your power line or internally in your amp. Either that or the fuse on your amp (usually right on the side) might be blown. Check your power line and make sure that your amp isn't screwed directly to any metal parts of your car, as some amps will short like this. If there's nothing wrong with the power line, send it in for warranty or bring it to your local audio store to have them check it. If you feel comfortable with trying to fix it yourself, then take it apart but be advised that internal screws usually have a glued spot so they can tell if you've disassembled it.
The P325.1 is relatively small to power a pair of P3's. You'll only get 325 watts RMS at 2 ohms (162.5 watts per sub). The P3's power range is from 100-500 watts, so they will work, but don't expect them to be really loud.
For best power, your subs should be wired with the voice coils in series and then the 2 subs paralleled to the amp resulting in a 2 ohm load.
First off will the fastener turn ? If not try using a bit of wd-40 and letting it "soak" for a little while . Also be sure you are using a good proper sized Phillips screwdriver . If the fastener still won't turn try using a can of "computer duster " inverted so the liquid comes out , note this will be well below zero degrees , and freeze the screw head , then try turning . If the fastener is stripped and the ttol slips you will have to remove the amp cover and grip it with a pair of vise grips ,pliers or a flat blade screw driver .
Yes. Wire the two 2 Ohm speakers in series and connect them to one channel. Connect the 4 Ohm speaker into the other channel. This will give you a balanced 4 Ohm load on each channel.
