Review on TEMCo WC0181 100 Welding Battery Copper by Noah Smith

For car stereos around 2000w and up start by replacing it with a dedicated high power alternator for your car, typically 250-250 W. 370 amps, the maximum possible for your model. Then buy about 25 feet of the exact same "Big 3 Upgrade" welding cable. A capacitor is not currently required or recommended. Pair the best 4-channel amps and component speakers with your desired mono amp and subwoofers and you're in business. The 4/0 track is even better than the 1/0 track because it keeps the inside cool. Just a few tips based on my own trial and error. Good luck and this is the best wire for a powerful sound system!