Car Audio Power Cable Calculator

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.

Car audio power cable calculator. This is an allowance for the amplifier to cope with peaks without distortion. If your measurement is between two measurements use the higher one. 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. At least 3db headroom is generally recommended.

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. Choosing which battery to use to power your audio system can be daunting when faced with all sorts of numbers and specifications that don t seem to have anything to do with car audio at all. Next find the total rms power the cable must support on the left. 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. 5 the power of the amplifier measured in watts. Will that amplifier uses three sets of power and ground cables. With our wattage chart below the choice has never been easier.

To calculate the proper power and ground cable sizes find the distance of the power cable along the top row.