The JBL 2451SL-16 is a professional high-frequency compression driver engineered for demanding sound reinforcement applications in large venues, touring systems, and high-output fixed installations. This driver is designed to be mounted to a compatible horn to create a precise, high-efficiency high-frequency component for a two-way or three-way loudspeaker system. The "16" designation indicates its nominal impedance of 16 ohms, which is a common value in professional audio systems for optimizing power distribution and network loading in multi-driver arrays. It is built around JBL's Differential Drive technology, which utilizes dual voice coils and magnetic gaps to provide exceptional power handling, reduced distortion, and increased sensitivity.

At the core of the 2451SL is a large 4-inch pure titanium diaphragm, chosen for its rigidity and ability to reproduce high frequencies with clarity and minimal breakup. The diaphragm is driven by a massive, symmetric neodymium magnet structure that delivers high magnetic flux in a relatively compact package. The driver's exit throat is sized for compatibility with a wide range of JBL and industry-standard radial and constant-directivity horns. This combination of materials and design results in a driver capable of producing high sound pressure levels with low distortion, making it suitable for reproducing critical high-frequency content in music and speech with accuracy and authority.

The driver is constructed for extreme durability and reliability. Its housing is a precision-machined, cast aluminum frame that provides robust mounting and effective heat dissipation. The 2451SL is a key component in many of JBL's flagship cinema and concert systems, where its consistent performance and longevity are essential. When paired with an appropriate horn, it delivers controlled dispersion and extended high-frequency response, enabling system designers to achieve even coverage and intelligibility across large audience areas. The JBL 2451SL-16 represents professional-grade transducer engineering focused on power, clarity, and reliability for the most demanding acoustic environments.