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Ushio

1000669 Ushio HPL-550/77X+ JS77V-550WX T6 Clear Halogen Lamp
17.49 USD
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Confirm before ordering

Match Ushio order code 1000669, lamp designation HPL-550/77X+, and construction code JS77V-550WX. This is the 77V, 550W, extended-life HPL lamp for compatible ETC Dimmer Doubling systems; it is not the ordinary 115V, 120V, 230V, or 240V HPL version.

Need help confirming fit? Email help@dynamiclamps.com with the fixture model, dimmer configuration, and photos of the installed lamp and fixture labels.

Specifications

Ushio HPL-550/77X+ long-life stage lamp

  • Manufacturer order code: 1000669
  • Lamp designation: HPL-550/77X+
  • Construction code: JS77V-550WX
  • Power: 550 W
  • Voltage: 77 V
  • Base: G9.5 heat-sink / ceramic base with tapered pins
  • Bulb: T6 clear quartz
  • Filament: 4-C8 compact filament
  • Initial luminous flux: 12,160 lm
  • Color temperature: 3050 K
  • Color rendering index: 100
  • Average rated life: 2,000 hours
  • Maximum overall length: 104 mm
  • Diameter: 18.35 mm
  • Light-center length: 60.3 mm
  • Mercury: This tungsten-halogen lamp does not use a mercury-discharge arc; dispose of it according to local lamp and glass requirements.
Equipment compatibility

ETC Dimmer Doubling fixture references

Ushio documents the 77V HPL family for ETC Source Four fixtures using ETC Dimmer Doubling. The fixture, dimmer, and wiring configuration must specifically support the 77V lamp.

  • ETC Source Four ellipsoidal fixtures configured for Dimmer Doubling
  • ETC Source Four jr configured for Dimmer Doubling
  • ETC Source Four jr Zoom configured for Dimmer Doubling
  • ETC Source Four PAR EA configured for Dimmer Doubling
  • ETC Source Four PAR MCM configured for Dimmer Doubling
  • ETC Source Four PARNel configured for Dimmer Doubling
  • ETC Source Four Revolution using the documented HPL 550/77X lamp configuration

Do not install this 77V lamp in a standard line-voltage fixture. The fixture manual and dimmer-system documentation take precedence.

Cross-reference guidance

Related order code is not a voltage substitute

Legacy cross-reference OSRAM / SYLVANIA 54604 applies to the same HPL 550/77X class, but no separate active stocked Dynamic Lamps page was verified during this conversion. Other HPL lamps may share the heat-sink base while differing in voltage, wattage, output, and life; never select one by base or appearance alone.

Documentation & safety

Manufacturer documentation

Ushio Audio/Visual & Entertainment lamp catalog

Safety

Use only in an approved enclosed fixture with the correct 77V Dimmer Doubling configuration, guards, ventilation, and lamp rating. Disconnect power and let the fixture cool completely before service. Handle the quartz envelope with clean gloves or a lint-free cloth and follow the fixture manufacturer's installation procedure.