OSRAM HMD 2500 – Double-ended metal halide stage lamp (2,500 W, 6,000 K)

OSRAM HMD 2500 – Double-ended metal halide stage lamp (2,500 W, 6,000 K)

The OSRAM HMD 2500 is a double-ended metal halide lamp designed for professional stage, theater, and event applications requiring high luminance and robust operation. Its architecture, featuring special ceramic bases with cable, facilitates mounting while maintaining precise positioning in optical systems. It offers hot-restart capability and an average lifespan of 2,000 hours , with a nominal luminous flux of 270,000 lm and a color temperature of 6,000 K , making it ideal when a "daylight" light source is needed in high-performance luminaires powered by 115 V.

This lamp operates at 2,500 W with a current of 26 A and an efficacy of 100 lm/W , and is compatible with ballasts and igniters suitable for its power class. Thanks to its design and high-temperature materials, it can withstand a maximum base temperature of 350 °C and a horizontal operating position of ±45° . In some commercial listings, it appears as “MHD 2500”; the manufacturer's designation is HMD 2500 .

Main features

• Rated power: 2,500 W at 115 V (~26 A).
• Luminous flux: 270,000 lumens; efficacy: 100 lm/W.
• Light color: 6,000 K (daylight), with hot restart .
• Professional construction: double end with special ceramic bases with cable for precise mounting.
• Long average life: 2,000 hours.
• Thermal tolerance: maximum base temperature 350 °C; convection or forced cooling depending on the assembly.
• Controlled optical geometry: LCL 108 mm, max. total length 295 mm, bulb diameter 31.5 mm.
• Ignition: starting voltage 9 kV (cold) / up to 45 kV (hot).

Product benefits

• Very high light output with daylight spectrum for projection, cutting and stage effects.
• Operational stability at high temperatures and in prolonged use, reducing downtime for maintenance.
• Precise mounting and alignment thanks to the wired ceramic bases, which preserve the focus and performance of the optical system.
• Hot restart speeds up service resumption after micro-outages or scene changes.

Use cases

• Replacement of lighting fixtures for theaters, shows and events that require 2.5 kW double-ended lamps.
• Projection and cutting applications where 6,000 K light with very high luminance is required.
• Touring productions with frequent ignition cycles that benefit from hot restarting.

Frequently Asked Questions

• Can I dim it with a conventional dimmer? No. As it is a discharge lamp, it must be operated with a ballast and igniter compatible with 2,500 W/115 V. Dimming, if applicable, depends on the electronic equipment used.
• Is it interchangeable with the HMI 2500? They share a power range and color temperature, but they are not direct equivalents: the HMD 2500 uses special wired bases and has a different geometry and lifespan ; always verify the mechanical and electrical compatibility of the luminaire.
• Do they require safety precautions? Yes. High-pressure metal halide lamps exhibit high luminance, UV radiation, and high internal pressure ; they must be used in suitable luminaires and following the manufacturer's recommendations.

Compatibility and operation

The OSRAM HMD 2500 is used with appropriate control equipment for 2.5 kW/115 V. The datasheet lists, for reference, igniters (BAUCH 905 and 922, Vagnini 25100K) and electronic ballasts/controllers such as Power Gems EB 250/250 CD, Vagnini AL 2500, May & Christe HMI 2500W-5i, LEJ ebm 2500 or DeSisti 2425. Always check system compatibility and certifications before installation.

Safety and handling

Due to high luminance, UV radiation, and internal pressure , operate the lamp in enclosed fixtures and according to the manufacturer's instructions. Avoid touching the bulb with your hands; clean with isopropyl alcohol if necessary. Maintain the horizontal working position ±45° and ensure the specified cooling.

Project description

OSRAM HMD 2500 metal halide lamp, double-ended, 2500 W, 115 V, 26 A, luminous flux 270,000 lm, 6000 K, efficacy 100 lm/W, hot restrike. LCL 108 mm, max. total length 295 mm, diameter 31.5 mm, cable length approx. 210 mm, electrode gap 25 mm. Max. base temperature 350 °C. Horizontal working position ±45°. Special ceramic base with cable.