OSRAM CP/81 64673 – Halogen Studio Lamp 300 W, 230 V, GY9.5 (tungsten 3100–3200 K) for film, TV and theatre

OSRAM CP/81 64673 – Halogen Studio Lamp 300 W, 230 V, GY9.5 (tungsten 3100–3200 K) for film, TV and theatre

The OSRAM CP/81 64673 is a professional 300W , 230V halogen lamp with a GY9.5 base, designed for film and television , theater , and entertainment applications . It delivers a stable luminous flux of approximately 6,800 lm with a color temperature of 3,100 K (studio tungsten standard, practically equivalent to 3,200 K) and a CRI of 100 , offering impeccable color rendering on camera. Its compact, centered filament ( illuminated field approx. 6.5 × 13 mm) facilitates a clean beam and precise focusing on Fresnel and PC lenses. It is dimmable , has a universal burn-in position , and a rated life of 200 hours , making it suitable for intensive professional use.

Main features

• Power/voltage: 300 W · 230 V (direct mains operation).
• Color and light quality: 3,100 K (correlated CCT ≈3,140 K), CRI 100 , ≈6,800 lm , ≈22 lm/W .
• Precision optics: filament with illuminated field ~6.5 × 13 mm for uniform focusing.
• Format and compatibility: GY9.5 base, Ø 18 mm , length 90 mm , LCL 46.5 mm ; standard replacement in studio lights.
• Operation: adjustable , Any (universal) burn position , instant ignition.
• Nominal life: 200 h (professional application).

Product benefits

• Consistent studio color (tungsten) that matches with other sources at 3,200 K.
• Make it clean and controllable thanks to the compact and well-aligned filament.
• Easy integration into film/TV , theatre and event lighting fixtures with GY9.5 socket.
• Creative control through soft attenuation with amber shift .

Use cases

• Television and film : key lighting, fill lighting and backlighting on set or location.
• Theater and concert halls : Fresnel and PC for foregrounds, cutouts and accents.
• Events and rental : continuous tungsten lighting for shows and live performances.

Frequently Asked Questions

Is it dimmable? Yes. It works with resistive load dimmers ; when dimmed, the tone becomes warmer (amber shift).

Does it require a transformer? No. This version is designed to operate directly at 230V .

What is its lifespan? 200 nominal hours under the manufacturer's test conditions.

Is it suitable for home use? No. It is a special lamp for stage and studio use ; it is not intended for general home lighting.

Installation and safety

• Use only in suitable light fixtures with protective coverings (grilles/glass) and proper ventilation.
• Do not touch the quartz with your fingers; clean with isopropyl alcohol if necessary.
• Allow to cool before handling or replacing.

Project description

OSRAM CP/81 64673 halogen study lamp, GY9.5 , 300 W , 230 V , ≈6,800 lm , 3,100 K (CCT ≈3,140 K), CRI 100 , efficacy ≈22 lm/W , LCL 46.5 mm , Ø 18 mm , length 90 mm , illuminated field ~6.5 × 13 mm , Any position , adjustable , nominal life 200 h .