The manufacturer says that this yields a 70% savings in power usage, 73% reduction in heat output, and eliminates the need for replacement lamps. At 155 watts, the Source 4WRD LED is as bright as a 575W HPL extended life lamp, and accepts DMX or line dimming.
ETC Source 4WRD Watt Reduction Device
ETC launches the Source 4WRD Watt Reduction Device for full-sized Source Four ellipsoidals, enabling them to be converted from tungsten to LED.