Advance any full-size, tungsten Source Four ellipsoidal to LED efficiency in seconds, and without special tools.  This is the ETC Source 4WRD II.  A true LED retrofit.
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    70% less power, no re-lamping, no-hassle swap out, 3-year warranty. 
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    Control via DMX or A/C line dimming! 
This incredible advancement to the Source Four fixture is available either as a retrofit or as a complete light engine.
Also designed for the Source 4 PAR 4WRD Fixture Body and Source 4 PARNel 4WRD Fixture body.