Powering a car audio amp with a PSU: Interference when laptop is charging but when unplugged interference is gone? Answered
Hi, I hooked up 2 car speakers and a sub to a car amp using a PSU. There's a constant interference emitting from the speakers when the laptop (which I'm using as a source for music) is plugged in and charging as well as the PSU. This stops when I unplug the laptop.
Any suggestions about what can be done?
This is the original instructable that I was looking at. Unfortunately the maker couldn't solve my problem. https://www.instructables.com/id/Car-stereo-PC-power-supply-with-pizzazz/
Any help would be appreciated, thanks!