### JBL Control 47HC In-Ceiling Loudspeaker

The JBL Control 47HC is a top-tier in-ceiling loudspeaker designed to deliver superior sound quality and consistent coverage for various professional applications. Its advanced engineering makes it ideal for environments that demand high-fidelity audio and precise beamwidth control.

**Key Features:**

– **Radiation Boundary Integrator® (RBI™) Technology:** The Control 47HC integrates JBL’s innovative RBI technology, which features a conical waveguide that enhances sound dispersion and consistency. This design ensures seamless integration of sound from the high-frequency tweeter and low-frequency woofer, delivering a uniform sound field with minimal variation throughout the listening area. The RBI’s specially-designed apertures facilitate smooth low-frequency projection, contributing to the loudspeaker’s consistent audio performance.

– **Focused Beamwidth Pattern:** The Control 47HC’s narrow coverage pattern is particularly suited for high-ceiling applications where precise sound direction is crucial. By focusing the audio output, the loudspeaker reduces time arrival discrepancies from neighboring speakers, leading to enhanced speech intelligibility and a clearer overall sound.

– **Superior Bass Response:** Equipped with a large backcan and a carefully designed low-frequency driver, the Control 47HC delivers extended bass response that provides a warm and full-bodied tone. The 165 mm (6.5 in) woofer features a polypropylene cone with a pure butyl-rubber surround, ensuring durability and longevity. The copper-clad aluminum voice coil, wound on a vented aluminum former, reduces distortion while improving sensitivity for accurate bass reproduction.

– **Crisp High Frequencies:** The coaxially mounted 25 mm (1 in) soft dome tweeter is engineered for smooth and extended high-frequency response. It includes internal damping for a refined sound profile and ferrofluid cooling to manage power handling and reduce compression, resulting in clear and detailed treble.

– **Versatile Use:** The Control 47HC is designed to be flexible in its application. It can be configured as an 8-ohm low-impedance speaker or integrated into a 70V/100V distributed loudspeaker system, making it suitable for a wide range of installation environments.

**Applications:**

The JBL Control 47HC is ideal for both small and large-scale projects, offering professional-grade audio performance for various settings. Its focused pattern and robust build make it an excellent choice for venues such as conference rooms, auditoriums, retail spaces, and any other area where high-quality, consistent audio coverage is essential.

**Design and Construction:**

– **Enclosure:** The loudspeaker’s design includes a large, high-quality backcan that supports enhanced bass output. Its durable construction ensures long-term reliability and performance.
– **Driver Components:** The 165 mm (6.5 in) woofer and 25 mm (1 in) soft dome tweeter are optimized for high performance, with a focus on delivering both deep bass and clear highs.
– **Installation Flexibility:** The Control 47HC’s adaptability allows it to fit various installation requirements, whether in high-ceiling applications or as part of a larger distributed audio system.

In summary, the JBL Control 47HC is engineered to provide exceptional sound quality with consistent coverage and versatility. Its advanced RBI technology, combined with its robust driver components and flexible installation options, makes it a premium choice for professional audio installations that demand clarity and precision.