Philips MSD 250/2 - GY9.5 Metal Halide Lamp (250 W, 8,100 K, 18,000 lm, 3,000 h life)
The Philips MSD 250/2 is a single-cap metal halide discharge lamp designed for entertainment and studio applications. Its compact 5 mm arc and GY9.5 base enable highly efficient light gathering and a sharp, controllable beam. It delivers 18,000 lumens with a nominal color temperature of 8,100 K (daylight) and a CRI of 70 , maintaining vibrant colors on stages, soundstages, and in clubs. The lamp has a universal operating position , is non-dimmable, and boasts an average lifespan of 3,000 hours , reducing downtime for maintenance and replacement costs. Its overall length is 108 mm and its maximum diameter is 23 mm , with an approximate weight of 0.030 kg .
Main features
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Power: 250 W
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Socket: GY9.5 (2 pins, prefocus)
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Luminous flux: 18,000 lm (min. 16,000 lm)
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Color temperature (CCT): 8,100 K (daylight)
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Color Rendering Index (CRI): 70
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Luminous efficacy (nominal): 72 lm/W
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Luminous arc: 5.0 mm
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Lamp current: 3 A
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Minimum ignition voltage: 207 V
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Average lifespan: 3,000 h (L50)
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Operating position: Universal
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Not adjustable: Yes
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Dimensions: length 108 mm; diameter 23 mm
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Max. bulb/clamp temperature: 500 °C / 350 °C
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Net weight approx.: 0.030 kg
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Main application: Studio, theater and nightclub
Product benefits
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Powerful and defined beam: the short arc facilitates precise projection, ideal for moving heads, cutouts and color changers.
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Stable “daytime” color: 8,100 K offers cool whites and consistent color saturation on stages and sets.
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Fewer downtimes: 3,000 hours of average life reduces the frequency of replacements and operating costs.
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Easy integration: GY9.5 socket and universal position for mounting on multiple entertainment lights.
Compatibility and equivalencies
The MSD 250/2 is the lamp specified by numerous manufacturers of 250W luminaires. Documented examples:
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Martin Professional MAC 250 (family that uses MSD 250 W lamp).
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Robe ColorMix 250 AT (expressly specifies MSD 250W/2 GY9.5).
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Elation Design Spot 250 (manual: use MSD 250/2 GY9.5 lamp or equivalent).
Commonly used equivalents in the market (check exact compatibility with each device): GE CSD250/2 SE, Osram HSD 250/80, Sylvania BA 250/2 SE D, Ushio USD-250/2.
Use cases
- Theater and tour: 250W cutouts and moving heads with "day" balance for color mixing and high contrast gobos.
- Studios and sets: effects lighting and cool fills with good color rendering for cameras.
- Clubs and events: dynamic effects with high intensity and long lifespan to reduce maintenance.
Frequently Asked Questions
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Can it be dimmed with a conventional dimmer? No. The MSD 250/2 is a non-dimmable discharge lamp; it requires a suitable ballast and igniter.
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Can I mount it in any orientation? Yes, the operating position is universal .
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What voltage is needed for ignition? Ignition requires a minimum ignition voltage of 207 V supplied by the equipment's starting system.
Project description
Single-ended metal halide lamp GY9.5, 250 W, 18,000 lm flux (min. 16,000 lm), CCT 8,100 K, CRI 70, efficacy 72 lm/W, arc 5 mm, current 3 A, minimum ignition 207 V, average life 3,000 h, universal position, non-dimmable; dimensions 108 × 23 mm; weight 0.030 kg; max. bulb/clamp temperature 500/350 °C.
