Sylvania Stage & Studio 58741 (150Q/CL/DC ETC) Halogen Lamp — 150W | 120V Line Voltage | 2,800 Lumens | BA15d Double Contact Bayonet Base

The Sylvania Photo-Optic 58741 (150Q/CL/DC ETC) Lamp is a professional-grade, high-intensity line-voltage tungsten halogen capsule engineered for precision theatrical stage borders, television studio backlights, photographic flood equipment, high-end retail display spots, and specialized medical instrumentation. Producing 2,800 initial lumens of pristine 2950K warm white illumination, this compact T4 bulb features an advanced ANSI ETC specification code tracking profile and utilizes a precision-coiled CC-8 tungsten filament to achieve a flawless color rendering index of 100 CRI. Outfitted with a heavy-duty BA15d double contact bayonet base, it provides a stable 2,000-hour rated average service life and universal operating position flexibility.

ADL Supply Expert Application & Replacement Guide

The Sylvania 150Q/CL/DC (ETC) flanged halogen lamp is an established industry photo-optic baseline specified universally across theatrical stage borders, television news sets, portrait studios, corporate showrooms, and biomedical testing laboratories. Utilizing a high-purity clear quartz tube housing surrounding an axially oriented CC-8 tungsten filament layout, this lamp projects a continuous, uninterrupted full-spectrum light beam. This allows directors of photography, camera technicians, and lighting gaffers to capture absolute color fidelity, natural textures, and accurate skin tones without dealing with the visual frequency gaps or shifting color outputs common in lower-grade non-halogen lighting elements.

Critical 120V Line Voltage Parameters and Mechanical BA15d Seating Controls: Maintenance crews and studio technicians executing routine replacement loops must analyze fixture socket parameters closely prior to checkout: this lamp operates natively on raw 120V line voltage circuits and connects via a BA15d double contact bayonet terminal layout. The dual contact brass base is designed to lock securely into spring-loaded bayonet slots, providing a reliable electrical path that resists the heavy physical vibrations common in modern staging overhead rigs or transportable location lighting stands.

Push the lamp down firmly into the socket, rotate clockwise to engage the alignment tabs, and ensure it slots cleanly to achieve the fixture's intended center-beam focus. Never attempt to force this line-voltage capsule into low-voltage 12V or 24V miniature lamp housings, as this will prevent ignition or overload associated low-voltage transformer circuitry.

Detailed Product Specifications

• Brand Name: Sylvania (OSRAM Sylvania Product Portfolio / Ledvance Corporate Group)
• Product Series Line: Photo-Optic Stage & Studio Tungsten Halogen Series
• Sylvania Factory Product Order Code SKU: 58741
• Official Industry ANSI Equipment Code: ETC
• Manufacturer Description Model Abbreviation: 150Q/CL/DC(ETC)
• UPC Barcode Number (GTIN-12): 046135587412
• Global Trade Logistics Code (GTIN-13): 0046135587413
• Core Technology Class: Thermal Incandescent — High-Temperature Tungsten Halogen Capsule
• Primary Control Requirement: Direct Unballasted Line Voltage (120V Mainline Branch Line Input)
• Operational Power Draw: 150 Watts
• Nominal System Operating Voltage: 120 Volts AC/DC Compatible
• Initial Luminous Brightness: 2,800 Lumens (Post standard seasoning burn)
• Color Temperature Configuration: 2950K Warm White (Clear High-Purity Quartz Glass Casing)
• Color Rendering Index (CRI): 100 Ra (Flawless Continuous Full-Spectrum Energy Distribution)
• Filament Type Geometry Class: CC-8 (Axially Oriented Coiled-Coil Tungsten Profile)
• Base Type Configuration: BA15d (Double Contact Bayonet Base / 15mm outer cup diameter)
• Bulb Shape Enclosure Code: T4 Enclosure (0.51" Inch / 13.0mm actual glass shell width)
• Maximum Overall Length (MOL): 2.44" Inches (61.9mm actual structural tip-to-base size)
• Light Center Length (LCL Dimension): 1.38" Inches (34.9mm precision focal height axis center)
• Rated Average Service Lifespan: 2,000 Hours (Based on universal laboratory switching cycles)
• Chassis Burn Position Limit: Universal — Operates reliably at any horizontal, vertical, or tilted mounting angle

Operation, Safety & Mounting Compliance

High-Temperature Regenerative Halogen Halide Cycle Controls

This halogen lamp operates via an internal chemical loop where vaporized tungsten particles bond with halogen gas molecules inside the heated chamber. This compound cycles back onto the burning CC-8 filament tracks, redepositing the tungsten to preserve filament mass. For this cycle to work cleanly and prevent wall-blackening, the inner envelope must continuously transcend a high temperature threshold, making proper convective venting inside track cylinders or spot enclosures mandatory.

Commercial Equipment Industry Cross-References

This premium 150W 120V BA15d halogen bulb serves as a direct drop-in replacement or alternative for the following lines:

• Osram Alternative Match: 150Q/CL/DC (ETC) / Order Code 58741 High-Performance Stage Bulb
• Philips Lighting Match: 150W 120V BA15d T4 Clear Halogen / Catalog Reference 204560
• GE Lighting Alternative: 150Q/CL/DC / Trade Catalog Part 41549

Bulk Commercial Lighting Supply & Project Support

ADL Supply delivers commercial-volume logistical fulfillment, tiered commercial contractor discounting strategies, and full pallet project quoting options to electrical accounts across the United States.

For formal wholesale inquiries, volume pricing modifications, or manufacturer spec sheet documentation, reach our commercial branch directly at 1-800-235-3489. We are your commercial supply partners as an authorized wholesale Lighting Distributor In Doral, Florida.