What is a Dimmer Rack?
Understanding the Role, Noise, and Evolution of High-Density Dimming Somewhere in most auditoriums, there’s a dimmer rack — a metal cabinet about 2 feet wide, 2 feet deep, and 3 to 6 feet tall. It is often found in an…
Walt Dowling
Legacy EDI Dimmer Racks: What to Know About Mark VII and MX Systems
Electronics Diversified, Inc. (EDI) began manufacturing remote-controlled dimmer panels in 1967 and gained recognition for its rugged, portable touring “SCRimmer” dimmers. In 1982, EDI introduced the Mark VII — a high-density dimmer rack that competed directly with Strand’s CD80 and…
Aging Dimmer Racks: What Goes Wrong
As dimmer racks age, the most common points of failure include the processor, cooling system (fans), and dimmer modules. Fortunately, many racks can be upgraded or repaired — including models from Strand Lighting, Electronics Diversified (EDI), ETC, Entertainment Technology (Lightolier),…