going to go without a headunit and use 3 amps. the amps have +12v, ground and remote power connections. to turn them on they need a +12v feed into the remote terminal. as i want them to turn on and off with the pc the only idea i have so far is to cut into a usb cable and use the 5v to flick a realy which then feeds 12v to the amp. q is will feeding from usb via a realy then to ground damage my laptop or will it drain power from my other usb sockets (on a powered hub) or is there a better way of doing this? thanks!
No announcement yet.
switching audio amps from pc?