Thanx, Don, Henry, Art, JR and others that have offered help and ideas.
I have some more pieces to the puzzle at my bud's church. Here's the LED replacement lamps they installed and apparently, the dimmers in use....
I've not heard of this brand of replacement LED lamp. Should they replace the lamps with known quality lamps first to see if the noise is reduced or eliminated before going further?
Thanx,
G
Since the houselights are on 9 circuits/dimmers, you could turn off all the circuits except the one closest to the stage and see if the interference is still present. If it is, you could start out by just replacing the LEDs on that circuit to see if it makes any improvement before replacing all the others.