ETC/Elec Theatre Controls 42550J
25º-50º Source Four jr Zoom in Black WITHOUT Terminating Connector

OUR PART #  S4JR-25/50

Our Price: $267.96List Price: $348.00
You save 23%! (Low Price Guarantee)

In Stock

If you're looking for the field-angle versatility of a zoom ellipsoidal with the affordability and design of a smaller fixture, then you're looking for the Source Four jr Zoom. Great for applications on the small stage or in clubs, retail events and industrials, the Source Four jr Zoom boasts rugged ETC fixture construction and all the celebrated precision optics of a Source Four.

NOTE: This Source Four jr Zoom is unterminated.


  • 25º-50º Zoom
  • Rated up to 575W
  • Super-efficient HPL lamp
  • Faceted dichroic reflector removes 90% of IR heatfrom beam
  • Two-plane stainless-steel shutter blade assembly
  • Tool-free lamp adjustment
  • Rugged die-cast aluminum construction
  • Supports ETC Dimmer Doubling™



  • Rugged die cast aluminum construction
  • 20 gauge stainless steel shutters in a bi-planeassembly
  • High impact, thermally insulated knobs and shutterhandles
  • Two accessory slots, and a top mounted, gel frameretainer
  • Steel yoke with two mounting positions
  • Positive locking, hand-operated yoke clutch
  • Slot for glass or stainless steel patterns
  • Slot with sliding cover for motorized pattern devicesor optional iris
  • UL and cUL Listed


  • 115-240V, 50/60Hz
  • High temperature 3-conductor 36” leads in a glassfiber outer sleeve
  • Supports ETC Dimmer Doubling™ technology


  • 575W maximum
  • HPL – compact tungsten filament contained in akryptonfilled quartz envelope (see table for suitable lamp types)
  • Patented filament geometry provides extremelyefficient light collection and transmission
  • Integral die cast aluminum heat sink lamp base


  • Optimized optical system for efficient photometricperformance
  • Two bi-convex lenses
  • Faceted borosilicate reflector with dichroic coldmirror coating removes greater than 90% infrared radiation (heat) and reflectsgreater than 95% of visible light
  • Reflector secured with anti-vibration shock mounts
  • Tool free, positive locking X, Y and Z lamp centeringadjustments, unaffected by relamping
  • Beam edge continually adjustable hard-to-soft

NOTE: ETC Source Four jr Zooms are supplied with c-clamp, color frame, and 3’ (96cm) leads as standard.


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