HARMAN PRO JBL Control 424LP Ceiling Speaker with CRBI Technology and Low-Profile Design

JBL Professional Control 424LP 2-way Ceiling Mountable, Rail Mountable, Blind Mount Speaker - 40 W RMS - White

The JBL Control 424LP is a high-performance ceiling speaker designed for versatile applications such as retail stores, conference rooms, and learning spaces. Featuring a coaxial 4-inch woofer and a 0.75-inch soft-dome tweeter, this speaker delivers clear, detailed sound across a broad frequency range from 75 Hz to 18 kHz. Its advanced CRBI (Coplanar Radiation Boundary Integrator) technology ensures consistent sound coverage throughout the listening area, minimizing hot and cold spots for an even auditory experience. This technology results in a smooth sound character that remains pleasant and balanced, even in off-axis zones, reducing the need for multiple speakers and simplifying installation while maintaining audio quality.

The Control 424LP boasts a low-profile backcan, less than 4 inches deep, making it ideal for shallow ceiling spaces without sacrificing bass performance. Its wide diameter backcan provides enhanced low-frequency response, closely matching the sound profile of the deeper Control 424C/T model, allowing seamless integration within mixed installations. The elegant bezel-less grille blends effortlessly into room décor, with magnetic attachment and a safety tether for secure mounting. The speaker’s high power handling capacity, rated at 60 watts RMS (240 watts peak), combined with a wide frequency response and low distortion, makes it suitable for demanding sound reinforcement tasks. For distributed systems, the included multi-tap transformer supports 70V and 100V line applications, with low saturation to maintain sound fidelity even at high drive levels.

Constructed with durable components, the drivers are designed for long-term reliability, protected by built-in circuitry against overload. The 4-inch woofer is acoustically loaded via JBL’s exclusive CRBI loading plate, which enhances efficiency and sensitivity, resulting in higher output levels. The coaxial configuration ensures a cohesive sound image, while the wide 130-degree coverage angle simplifies installation by reducing the number of speakers required to achieve uniform sound distribution. The package includes a paintable white grille, C-rings, tile rails compatible with various ceiling sizes, and all necessary mounting hardware. Compliant with UL1480A and UL2043 safety standards, the Control 424LP is suitable for both commercial and institutional environments seeking premium audio performance with a sleek aesthetic.

Features:

• Coaxially mounted 100 mm (4 in) woofer and 19 mm (0.75 in) soft-dome tweeter for clear, detailed sound.

• Low-profile backcan (under 4 inches deep) designed for shallow ceiling spaces with full bass extension.

• Stylish bezel-less grille seamlessly integrates into room decor with magnetic attachment and safety tether.

• JBL-exclusive CRBI Coplanar Radiation Boundary Integrator technology for consistent coverage across the listening area.

• Wide frequency response from 75 Hz to 18 kHz ensuring comprehensive audio reproduction.

• Power handling of 60 W RMS (240 W peak) with multi-tap transformer support for 70 V and 100 V distributed systems.