If your measurement is between two measurements use the higher one.
Car audio power cable calculator.
5 the power of the amplifier measured in watts.
This is an allowance for the amplifier to cope with peaks without distortion.
At least 3db headroom is generally recommended.
If your measurement is between two measurements use the higher one.
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Each of the positive power leads should be fused with a 225 amp fuse to protect the wires and your car from catching on fire in the case of a short circuit and support that huge output.
The right cables and wires ensure that the strongest signal is going to the correct destination and that a sufficient amount of power is being sent to the receiving components.
Will that amplifier uses three sets of power and ground cables.
One of the most important connections in a car audio system is the power and ground cable that connect the vehicles battery to an aftermarket amplifier.
In the calculator below first input the distance from the speaker and select feet or meters.
Note that for every 3db allowance the power requirement doubles.
To calculate the proper power and ground cable sizes find the distance of the power cable along the top row.
With our wattage chart below the choice has never been easier.