No. That's about the most unscientific thing I've ever heard!!Originally Posted by lookinco
Connect the grounds of all your audio equipment to the same place on your chassis. (And if possible make a new ground point).
In my car I bolted my ground cable to part of the boot. A short 4 gauge cable leads to a distribution block and everything audio related in the vehicle takes it's ground from that distro block. My headunit is powered by cable that runs to the back off the car from the dashboard.