Efficient and Energy Saving Theatre Lighting


The new RT-ES4 retrofit 90-watt LED luminaire by Crossroads LED (Patent Pending) brings an unprecedented level of efficiency and energy savings to the stage and theatre industry. The RT-ES4 is designed to be retrofitted into an existing ETC Source Four® EA fixture.

The 90-watt LED luminaire is 600 times more efficient than the existing incandescent lamp and is capable of matching the lumen output of the 575-watt bulb. The power supply is designed for either trailing edge or TRIAC dimming control. Additionally, the overall heat load with which the HVAC system has to cope is dramatically reduced.

For more information, pleaseĀ contact us.


Source four® is a registered trademark of the ETC corporation.


  • Energy efficient 90W LED luminaire
  • Easily retrofits the industry standard ETC Source Four EA fixture.
  • Trailing edge or TRIAC dimmable (specify when ordering).
  • Optional color temperature ranges from 3000K to 5000K
  • Variable beam angles available
  • Wide voltage range, 120 to 240Vac.
  • Life expectancy of 50,000 hours+
  • Years of trouble-free operation
  • Dimensions: 7.125 X 4.00
  • Housing: Machined aluminum
  • Input Voltage: 85-265 VAC
  • Power Consumption: 90W
  • Typical Luminous flux:
    • 5000K-9700lm
    • 4100K-8500lm
    • 3500K-8100lm
    • 3000K-7800lm
    • 2700K-7000lm
  • Available beam angles: 14 and 24 degrees
  • CRI: 80
  • Efficacy: 115lm/W
  • Operating Temperature: -40 to 85 C ( -40 to 185 F)