OSRAM 64789 CP41 / CP73 2000 W 230 V G38 — Single-cap halogen studio lamp for film, TV and stage

OSRAM 64789 CP41 / CP73 2000 W 230 V G38 — Single-cap halogen studio lamp for film, TV and stage

The Osram 64789 (LIF designation CP/73 , also known commercially as CP41 ) is a single-ended halogen lamp with a G38 base, designed for professional film and television, theater, concert, and entertainment applications . It operates directly at 230V and delivers 52,000 lumens at 3200K with a CRI of 100 , ensuring stable color and impeccable on-camera color rendering. It is dimmable (with the characteristic amber shift ), features instant start , and maintains a virtually constant luminous flux throughout its 400-hour rated life . Its professional geometry, with an LCL of 127mm , an overall length of 210mm , and a 20 × 19 mm² illuminated area , facilitates easy replacement and optimal optical performance in a wide variety of studio and stage lighting fixtures.

Main features

• Power / Voltage: 2000 W / 230 V (AC).
• Base: G38 (single socket, bipost).
• Nominal luminous flux: 52,000 lm · Useful flux (Φ _use ): 46,095 lm (360° measurement).
• Color and quality: 3200K · CRI 100 · CCT ~3139K.
• Optical geometry: LCL 127 mm · illuminated field 20 × 19 mm² · C-13 filament.
• Dimensions and weight: diameter 35.0 mm · length 210.0 mm · weight ~205 g .
• Operation: adjustable · combustion position s90 · instant ignition.
• Nominal life: 400 h .

Product benefits

• Color stable at 3200K and CRI 100 , ideal for skin and decorations with a natural appearance on camera.
• High and consistent output for demanding on-set and live workflows.
• Smooth dimming with a warm transition on dimming ( amber shift ), perfect for creative on-set adjustments.
• Standard G38 and LCL 127mm format simplify maintenance and replacement in studio lights, Fresnels and cutouts.

Use cases

• TV and film studios: Fresnel/PC, cutouts and projectors with G38 socket.
• Theatre and concerts: stage lighting, backlighting and cycloramas.
• Events and professional photography in single-ended halogen luminaires.

Frequently Asked Questions

• Is it CP/73 or CP41? The official LIF designation is CP/73 . In the professional sector, CP41 is also used as an equivalent for the same geometry and performance (ANSI FKK ).
• Can it be used with a dimmer? Yes. When dimmed, the light becomes warmer ( amber shift ), as with all tungsten halogen bulbs.
• Does the working position matter? Yes; the data sheet specifies s90 . Follow the orientation recommended by the luminaire manufacturer.
• Is it suitable for domestic use? No. It is a professional lamp; use it in suitable fixtures with ventilation and protective measures.

Usage and safety recommendations

• Install in G38 compatible luminaires with thermal protection and shielding.
• Do not touch the bulb; handle with clean gloves or a lint-free cloth.
• Keep reflectors and optics clean to maintain flux and uniformity.
• Plan preventive replacements around 400 hours or according to illuminance drop.

Project description

Osram 64789 single-ended halogen lamp (LIF CP/73 , ANSI FKK ); G38 base; 2000 W , 230 V (AC); 52000 lm (Φ _use 46095 lm); 3200 K ; CRI 100 ; LCL 127 mm ; illuminated field 20 × 19 mm² ; C-13 filament; dimensions Ø 35.0 mm × 210.0 mm ; position s90 ; dimmable; rated life 400 h ; weight ~ 205 g .