In my HC room I have a Lutron Grafik Eye with 2 zones of 5*50W and 4*50W LV halogens and 1 zone for normal incandescent floor lamps. It all works fine, apart from an infernal buzzing when the LV zones are dimmed. The buzzing comes from both the transformers and the Grafik Eye itself. The transformers are ELV leading edge type. I have two other rooms with Lutron Telume dimmers and they don't have the same buzzing problem with 4 or 5 lights of the same type, I wouldn't have expected the Telume to be better than it's bigger brother! Anyone have any ideas on a solution? Is it possible the Grafik Eye is faulty? Is anyone else using ELV lighting with a Grafik Eye?