The JBL Control 426C/T is a premium, high-output two-way coaxial in-ceiling loudspeaker engineered to deliver exceptional full-range audio performance and ultra-uniform acoustic dispersion in challenging commercial spaces. As part of JBL's Enhanced Coverage Series, it features JBL's exclusive CRBI™ (Coplanar Radiation Boundary Integrator) technology, which seamlessly blends the sound from its 6.5-inch polypropylene woofer and coaxially mounted 0.75-inch fluid-cooled soft-dome tweeter. This innovative design provides an incredibly consistent 120-degree conical coverage pattern, effectively eliminating off-axis volume drops and sonic "dead zones" while reducing the total number of speaker fixtures needed to cover a room. Built for rapid integration, its heavy-duty steel backcan is UL 2043/NFPA 90A plenum-rated and features an upgraded dual-entry terminal cover with tool-less captive hand-screws for fast conduit routing. The speaker houses a low-saturation 60-watt multi-tap transformer for high-voltage distributed 70V/100V networks, along with a high-impedance 16-ohm direct bypass mode that allows up to four speakers to be safely wired in parallel on a standard low-impedance amplifier channel. The assembly is finished with an easily paintable, bezel-less magnetic white grille equipped with an integrated safety tether to blend flawlessly into modern architectural decor.

In addition to its premium acoustic engineering, this speaker drastically optimizes onsite labor times for contractors while meeting the most rigorous structural safety standards. The dual-entry terminal cover accommodates both top and side wiring knockouts, allowing electricians to pull flexible conduits from whatever angle best clears overhead obstructions. System configuration is managed cleanly using a removable four-pin Euroblock input connector that supports continuous daisy-chain looping to feed adjacent ceiling zones without requiring extra junction boxes. For buildings in active seismic regions, an integrated secondary mounting tab on the rear chassis enables secure attachment to a dedicated safety support cable. The final cosmetic presentation is perfectly flush, leaving only a clean, borderless face that satisfies strict interior design requirements while maintaining the rugged dust and moisture resistance needed for low-profile public venues.