Car Audio Power Cable Calculator

Note that for every 3db allowance the power requirement doubles.

Car audio power cable calculator.

Next find the total rms power the cable must support on the left. 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. To calculate the proper power and ground cable sizes find the distance of the power cable along the top row. This is an allowance for the amplifier to cope with peaks without distortion.

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. In the calculator below first input the distance from the speaker and select feet or meters. With our wattage chart below the choice has never been easier. When using only one battery refer to the primary.

Car stereo power and speaker wiring american wire gauge sizes connect additional devices to remote turn on wire relay diagram power and ground cable sizes radio on until door opened relay diagram stereo to bridged mono switched outputs relay diagram subwoofer wiring wizard switch series to parallel and back relay diagram switch stereo to bridged mono series. 5 the power of the amplifier measured in watts. If your measurement is between two measurements use the higher one. At least 3db headroom is generally recommended.

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.