i have a little 80 watt amp to power an 8 inch woofer in my bedroom and i have tryed all kinds of power supplies. all i get is a humming noise from the sub. i even bought a noise filter and put on it but it helps nothing... If anyone knows how i can fix this please let me know.
Audio Wizard, You need a lot more than 3 amps. You have to match or exceed the ampere rating of the vehicle. Try and get a power supply that is rated at 30 amps.