OSRAM 371W 370W Stage Lighting Bulb – High-Efficacy Beam Lamp for Moving Head Fixtures

OSRAM 371W 370W Stage Lighting Bulb – High-Efficacy Beam Lamp for Moving Heads

Select your option from the dropdown: Bulb only, Ballast only, or Bulb + Ballast combo. This listing is for a genuine OSRAM 371W 370W high-efficacy beam lamp and its matching electronic ballast. Built for professional stage lighting, moving head beam fixtures, and concert effect lights, this replacement bulb delivers 20,500 lumens at 7550K with CRI 85 for vivid color rendition and a 1.1 mm arc gap for sharp aerial beams.

OSRAM 371W vs 371WS / 371S – Key Difference

The OSRAM 371W and 371WS/371S share identical wattage (370W), lumen output (20,500 lm), color temperature (7550K), CRI (85), and physical dimensions (58x58x72 mm). The critical difference is the Working Distance (WD): the 371W has a WD of 37.4 mm, while the 371WS/371S has a WD of 31.4 mm. This 6 mm difference affects the focal point inside your fixture’s reflector. Installing the wrong variant may result in reduced beam intensity, poor gobo focus, or uneven hotspot distribution. Always check your original lamp specifications or fixture manual to confirm the correct WD before ordering.

Choose Your Option

• Bulb Only: OSRAM 371W 370W beam lamp, bare bulb. For users who already have a working ballast.
• Ballast Only: Matching 370W electronic/roller type ballast, 150x60x35 mm. For users who need a replacement ballast.
• Bulb + Ballast Combo: One OSRAM 371W bulb plus one matching ballast.

Technical Specifications

Fast, Tracked Shipping

Ships promptly with tracking. Packed securely to prevent damage during transit.

365-Day Replacement Warranty

All options are covered by a full 365-day warranty against manufacturing defects.

Select your preferred option from the dropdown and add to cart.