100amps is going to need thick wires.
A simple solution would be to get a 1500VA trafo, with a 9v secondary windings, then use a full ave bridge rectifier and caps. 🙂
Also, if it's a car amp, it may work better from 14 volts instead of 12.
A simple solution would be to get a 1500VA trafo, with a 9v secondary windings, then use a full ave bridge rectifier and caps. 🙂
Also, if it's a car amp, it may work better from 14 volts instead of 12.