How do I ground a system with mono block


I just recently switched to mono amps and now I have a ground loop. With my single chassis amp it was simple . . .it was the only piece of equipment grounded. Now if I lift the ground on one of the monos I break the loop and everything is fine (my pre amps power supply has a ground/float switch and I have it floating)but what I wonder about is with the directionaly shielded cables what happens to all the RF noise that the shielding picks up if the amp is not grounded? Sorry if the question is stupid but I just gotta know :) Gene
geeeno

Showing 1 response by pls1

I run tube monoblocks with a dedicated star ground from each with the star meeting at the ground of my preamp. I have Two PS Audio Power plants that also ground to that point which is 8 gauge wire to two 16 foot copper rods dirven ito ground right outside the listening room. The Monoblocks are on a dedicated 240VAC circuit split 120-120 to provide "balanced" AC two them. There is a second dedicated 240VAC cicuit split 120-120 for the two PS audio units. The grounds at the plugs are lifted from the AC mains ground and connected to as legs of points of the star ground. There have been lengthy discussions on this topic under the headings of dedicated lines and power conditioners. Check them out for some great info. The dedicated earth ground and the PS audio units killed all the noise on my truely terrible utility power lines.