SoundTube RS42-EZ-BK 4" OPN Ceiling Coaxial Speaker, 4", Blue

Designed for clear voice paging, background music and emergency voice-alarm systems, the SoundTube RS42-EZ-BK pro speaker delivers reliable acoustic performance for commercial, retail and security installations. This 4-inch coaxial ceiling speaker uses BroadBeam Ring technology to provide smooth high-frequency dispersion, improving speech intelligibility across open ceilings and suspended environments. With a frequency response of 140 Hz to 22 kHz and a 16 ohm impedance, the RS42-EZ-BK is easy to daisy-chain in low-voltage audio systems and integrates cleanly into multi-zone PA and monitoring setups.

Engineered for fast deployment, the unit ships with galvanized steel hanging cables, a locking cover plate for direct-to-conduit mounting, and weatherized components for indoor or covered outdoor use. The rugged injection-molded ABS enclosure and paintable aluminum grille preserve aesthetics in corporate, retail, and surveillance-focused installations while meeting EN60849 and BS5839-8 voice alarm requirements. Ideal for integrators specifying audio for security, surveillance, and monitoring systems, the RS42-EZ-BK simplifies installation without compromising sound quality. Contact sales or add to your project spec to streamline deployments and improve on-site audio performance.

• Clear, consistent audio coverage for paging and background music thanks to BroadBeam Ring technology—improves intelligibility in open-ceiling spaces
• Quick, secure installation with included galvanized steel hanging hardware and locking cover plate to reduce labor time on site
• Weatherized, durable ABS enclosure with glass-fiber reinforcement for reliable indoor or covered outdoor performance in security and surveillance environments
• 4-inch coaxial design with 140 Hz–22 kHz response and 16 Ω impedance for easy daisy-chaining in low-voltage systems and flexible system integration
• Paintable, low-profile aluminum grille and tamper-resistant connectors for clean aesthetics and secure, code-compliant installations
• Certified for voice alarm applications (EN60849, BS5839-8) — suitable for emergency voice/alert systems and monitoring applications