Introducing the revamped Ushio HPL+ lamp, now the most powerful HPL available. With its newly designed ultra-compact filament, this lamp enhances the optical efficiency of your ETC Source Four™ fixtures, delivering up to 20% more lumens—meaning you get more light without changing the fixture.

Unlike competing HPL lamps, which have larger filament dimensions, Ushio’s innovative 6.0mm x 9.5mm filament design was developed in collaboration with ETC engineers. This compact profile optimizes light distribution, maximizing both axial and radial efficiency.

The precise optics of the Source Four require equally precise lamp engineering. Ushio has addressed this need by creating a reduced geometry filament that meets high manufacturing standards. Enjoy measurable performance, reliable quality, a range of lamp types, and cutting-edge design tailored for your theatrical needs.

DATA SPECIFICATIONS

Works with the following ETC Source Four™ fixtures:

• Source Four jr: Rated up to 575W
• Source Four jr Zoom: Rated up to 575W
• Source Four: Rated up to 750W
• Source Four Zoom: Rated up to 750W
• Source Four PAR EA: Rated up to 750W
• Source Four PAR MCM: Rated up to 575W
• Source Four PAR Nel: Rated up to 750W

Dimensions: 104 mm x 60.3mm x 18.35mm

• Related Products

USHIO Item Code	1000668
Product Series	HPL
Prod. ID / ANSI Code	HPL-550/77V+
Description	HPL-550/77V+, JS77V+-550WC, 300 Hour
Description 2	550W 77V+
Item Type	Halogen
Base	HT/SNK
Voltage	77
Wattage	550
Burn Position	ANY
Bulb Shape	T6
Bulb Finish	CLEAR
Color Temp (K)	3250
Efficacy (lm/W)	28.7
Filament	4-C8
Front Glass Cover	NO
Initial Lumens (lm)	16520
Luminous Flux (lm)	16170
Life (hr)	300
Diameter (mm)	18.35
MOL (mm)	104
Light Center Length (mm)	60.3
Case Qty	10