It you mean a cap then it's 1 farad for every 1000 watts. So you would want a 1.5 farad cap. Or a 2 farad would work as well.
Very carefully
Positive post of capacitor is connected to the heavy amp cable. The ground terminal (or case) of the capacitor is connected to the car's ground or a ground wire that leads to the car's chassis. That's it.
I have a 760 watt amp powering 2 10" subs and it works fine. my brother has a 1000 watt amp powering 2 12" subs and he got a capacitor. So it really depends on what amp your looking at. if the 760w you wont need one, if the 1000w i would be safe and buy a capacitor. for the 1000w amp you would only need a 1 or 2 farad capacitor.
if you use a uncharged capacitor most likely your car battery will drain much faster using a uncarged capaciter will mess up your amp good power source is needed for your amp to give its maximum potential for deeper bass and no dimming
The capacitor will not cause dimming, whatever it is that the capacitor is being used for (usually helping drive a bass amp) is what causes the dimming. A capacitor is a quick charge and quick discharge battery basically, so when the amp has depleted the power in the cap it still must go to the car battery for power and that is when there will be dimming lights.
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.
when i play music in my car the lights dimm i wanted to know if a capacitor would stop that problem
Yes it is but you will have to turn the knob on ur amp to full power your speakers will not work at there best of coarse and last but not least turn your bass on cd player on 0 for clearness
not to my knowledge you have to have a different one for each because they do not go to the same thing exactly its best to find one ground for each but use the same power
Now I'm guessing that while you have a 4 gauge input on the cap, you only have an 8 gauge input on your amp. So to answer your question, yes you can, but you will not draw as much power through the 8 gauge as you would the 4. Remember that the capacitor should be located as close to the amp as you can get it.
power cable goes from battery to cap + terminal. separate power cable from cap + terminal to the amp. make sure the amp and cap are grounded.
The capacitor blocks the DC portion of the signal and therefore only the AC portion is amplified. i.e if the signal applied exists at a 2 Volt level for instance, after the capacitor the 2 Volts will be trimmed off.