A car amplifier is mainly used for mobile audio solutions. If you dont drive and own a amp or a subwoofer, you might be thinking how you can make your system work in your house through a wall outlet. Yes it is technically possible to hook up a car amp in your house, but you can't simply plug the two wires into the mains. Mains voltage is rated in most countries at around 240v, what you require is a stable 12 volts. So you will require an ac to dc power inverter, the best way to do this is to purchase a cheap computer power supply unit box. This can be easily modified to power on your car amp and it the most cost effective solution.
If you don't want to use a PC PSU, you can purchase a heavy duty switching power supply such as the PSV 300. This is the simplest way but the most expensive because you don't have to modify the connection in anyway you simple connect positive and negative and its powered on its that easy.
If you are looking to connect your car amp using a computer power supply, here are some exact instructions to help you with your car audio installation at home. My personal recommendation would be to use a nice 1000 watt from corsair because you don't want to the bass to be cutting out at high volumes, as you will only have to upgrade later to a bigger size, so you might as well buy one a bit more powerful beforehand.
1) You will need to pair up the positive and negative wires on your PSU. This is so all the amp rails are combined into one providing more stable power output continuously. So cut all the wires from the 22 pin ATX connector that usually plugs directly into the motherboard.
2) Then strip all the wires using a wire stripper, take off around 3 cm of outer plastic coating.
3) Twist all the yellow wires together and the black wires separately. Remember to leave one black wire for later on, as you will need to bypass the on circuit.
4) Connect the red thick power lead from the car amplifier the one that has the fuse to all of the yellow wires from the PSU. Connect the black ground lead from the car amp to the black wires from the PSU.
5) Grab some insulation tape and cover up the naked copper wires to prevent any shorts from occurring during operation.
6) You will need to find the green wire on the ATX connector and cut it off from there. Connect this wire to a spare black wire. This will trick the power supply unit on thinking you are pushing the on button on the front of a computer case.
2) Then strip all the wires using a wire stripper, take off around 3 cm of outer plastic coating.
3) Twist all the yellow wires together and the black wires separately. Remember to leave one black wire for later on, as you will need to bypass the on circuit.
4) Connect the red thick power lead from the car amplifier the one that has the fuse to all of the yellow wires from the PSU. Connect the black ground lead from the car amp to the black wires from the PSU.
5) Grab some insulation tape and cover up the naked copper wires to prevent any shorts from occurring during operation.
6) You will need to find the green wire on the ATX connector and cut it off from there. Connect this wire to a spare black wire. This will trick the power supply unit on thinking you are pushing the on button on the front of a computer case.
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