The JBL Control 447LP is a premium, low-profile two-way coaxial in-ceiling commercial loudspeaker from the Control 400 Premium Coverage Series, precision-engineered for venues with restricted overhead plenum space. It features a high-output 6.5-inch (165 mm) treated paper woofer paired with a coaxially mounted 1-inch soft-dome tweeter. These components are optimized by JBL’s exclusive conical Radiation Boundary Integrator® (RBI™) technology. This advanced waveguide structure blends the two drivers seamlessly, projecting an incredibly uniform 120-degree conical coverage pattern that eliminates off-axis volume drops and sonic "dead zones" across the room. Measuring just 5.6 inches (142 mm) deep from the bottom of the ceiling tile, its ultra-shallow steel backcan fits effortlessly into tight structural areas. It also meets UL 2043 and NFPA 90A standards for installation within environmental air-handling plenums.

In addition to its advanced waveguide geometry, this loudspeaker drastically streamlines onsite labor for system integrators while adhering to rigorous physical construction codes. The redesigned terminal enclosure integrates dual top and side cable knockouts, allowing contractors to route flexible conduit at whatever angle best avoids overhead HVAC and building obstructions. Electrical terminations are simplified via a locking, detachable four-pin Euroblock connector with direct loop-through routing for rapid, continuous daisy-chaining between active ceiling zones. For added deployment security, a robust secondary seismic safety tab on the rear chassis allows compliance with strict local building codes via an external support cable. The final cosmetic presentation is completely clean, using a bezel-less, full-face white magnetic grille with an internal safety tether that can be custom painted to blend invisibly into high-end architectural layouts.