OSRAM HPL 93728 LL 575W/230V – Long-life (1,500 h) HPL halogen lamp for ETC Source Four spotlights and equivalents

OSRAM HPL 93728 LL 575W/230V – Long-life (1,500 h) HPL halogen lamp for ETC Source Four spotlights and equivalents

The OSRAM HPL 93728 LL 575W/230V is the long-life (LL) version of HPL lamps designed for ETC Source Four and compatible luminaires. Its ultra-compact filament (UCF) concentrates light where the reflector is most efficient, providing a nominal luminous flux of 11,780 lm with a color temperature of 3,050 K and a CRI of 100. It features a G9.5 base with a heat sink and is optimized for the TP22H lamp holder , with an "any" burn-in position . Compared to the standard 230V version (~400 h, 3,200 K), the HPL 93728 LL offers a nominal lifespan of 1,500 h, maintaining a virtually constant luminous flux throughout its cycle.

Main features

• Power / voltage: 575 W · 230 V (AC).
• Light and color: 11,780 lm (Φ use 10,365 lm) · 3,050 K · CRI 100 .
• UCF filament: 6-C8 design for maximum light density at the focus.
• Base and compatibility: G9.5 with heatsink ; optimal performance with TP22H socket .
• Compact geometry: diameter 19.0 mm · total length 104.0 mm ( length without base : 98.0 mm) · LCL 60.3 mm .
• Illuminated field of the filament: 14.5 × 11.0 mm² .
• Reinforced construction: reinforced pinch , dissipative base and foam packaging for safe handling.
• Nominal lifespan: 1,500 h (LL), dimmable with natural amber tungsten displacement.
• Maximum permissible temperature in bushing/hot area: ≈350 °C (installation with TP22H and adequate ventilation).

Product benefits

• More hours on the billboard : LL version (1,500 h) to reduce downtime for replacements and operating costs.
• Image quality : UCF and CRI 100 ensure sharp edges and true color in theater, TV and events.
• Immediate integration : HPL form factor with G9.5 + heatsink , 60.3 mm LCL and TP22H compatibility.
• Touring robustness : reinforced sealing and improved thermal management by the heatsink.

Use cases

• Theatre and musical : cutouts/ellipsoidal (e.g., Source Four) with gobos and precise cutout.
• Television and film : key and cut to 3,050 K when lifespan is prioritized.
• Events and corporate : front and back lights with clean beam and consistent colors.
• Ephemeral architecture and touring : stable performance and quick replacement.

Frequently Asked Questions

• Is it compatible with ETC Source Four? Yes, the HPL family was originally designed for Source Four and is widely used in equivalent luminaires that employ a G9.5 base with a heat sink and TP22H lamp holder.
• How does the LL version differ? The HPL 93728 LL offers 1,500 h at 3,050 K , compared to the standard version (~400 ha ~3,200 K) when maximum output is prioritized over lifespan.
• Can it be dimmed? Yes, it is adjustable ; when dimmed, the typical amber shift of tungsten will appear.
• Safety recommendations? Operate in suitable luminaires with thermal protections and warnings; avoid heat-sensitive materials and do not touch quartz.

Installation and best practices

• Use TP22H bushing or equivalent to ensure correct contact and dissipation.
• Respect the nominal 230 V and ensure good ventilation of the luminaire.
• Handle with gloves or a clean cloth; do not leave grease on the bulb.

Project description

OSRAM HPL 93728 LL halogen lamp; 575 W , 230 V (AC); G9.5 with heat sink (optimum with TP22H ); 11,780 lm (Φ use 10,365 lm); 3,050 K ; CRI 100 ; LCL 60.3 mm ; Ø 19.0 mm ; length 104.0 mm ( without base : 98.0 mm); illuminated field 14.5 × 11.0 mm² ; filament 6-C8 ; burn-in position: any ; rated life 1,500 h ; T max. in cap ≈350 °C .