It depends on the power rating of the amplifier. The rule of thumb is often said to be 1000 RMS watts per farad.
RMS watts is basically the average output of your amp/subwoofer. The power ratings most often given by manufacturers are Peak Watts, ie. how much power the amp/sub can take before breaking down. The RMS wattage is often about half of your Peak rating.
So, given that you are running your 1000w Peak Pioneer subwoofer on a 1000w Peak amplifier, and given that both of them are 500w RMS, yes, a 1 farad capacitor would give the amplifier enough juice to run the sub.
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this cap only needs to be lit when it first comes on and when bass drains enough out of it that it starts to draw off your car so it does come on and off that what it does (normal)
the capacitor has 2 wires or poles, one is the ground or negative and the other one is the hot or positive... if it is for car audio amp the ground is connected to the chassis and the positive is connected to the battery and to the positive wire of the amp.