Does anyone know of any plans to build one of these? I bought one at radio shack and it does not work very well. It removes some of the hum but not all. Thank you, Shawn
It's definately a whine from the alternator. I'm using an Alpine head unit, low level outputs to a Coustic 100w/channel amp.
I used to have a ground loop isolator that was twice the physical size of this radio shack one. It worked very well. These seem very hard to find now?
I routed the low level speaker wires with the amp power. This is probaly whats causing the noise. I wish that I would have known before doing the install.
If radiated electrical noise is causing the problem, it's unlikely that any type of noise filter is going to help. Run a second set of patch cords outside the vehicle or over the seats to see if it's quiet that way.
