B&C Speakers 18TBX100 4 Ohms

An 18-inch Driver Designed for Modern Subwoofer Systems

The B&C 18TBX100 belongs to the category of 18-inch subwoofer drivers intended for sound reinforcement speakers where acoustic pressure, mechanical durability, and long-term stability are required. With its ferrite magnet and endurance-oriented design, this model is engineered to power enclosures capable of operating for extended periods at high levels while maintaining clear bass.

Its specified parameters (Fs 34 Hz, Qts 0.35) and recommended enclosure provide a coherent framework to achieve effective tuning in the low-frequency range, typically in generously sized bass-reflex cabinets. It is a relevant choice when the goal is to build or upgrade a high-performance subwoofer without compromising the robustness of the moving components.

Who Is It For and What Are Its Uses?

This speaker is aimed at integrators, speaker manufacturers, sound contractors, technicians, and DIY enthusiasts who want to equip an 18-inch subwoofer enclosure. It is particularly suitable for front-of-house (FOH) systems, touring subs, fixed installations (clubs, multipurpose halls), and any project where low-frequency impact is critical.

Thanks to its rated sensitivity of 97 dB (1 W / 1 m) and its ability to handle high power, it performs well in configurations focused on efficiency and dynamics. It can also serve as a "kick/sub" reinforcement depending on the crossover and cabinet design, with the frequency response extending up to 1 kHz (to be used judiciously depending on the speaker, crossover, and application).

Design, Durability, and Performance: Key Points

Ferrite Motor and Large 100 mm Voice Coil

The ferrite magnet motor favors a proven and stable construction, suited to the demands of sound reinforcement. The 4.0-inch (100 mm) copper wire voice coil aims for good thermal dissipation and improved durability during long high-level sessions. This assembly contributes to the speaker's ability to maintain control even when the enclosure is heavily driven.

Reinforced Suspension and Centering

The triple roll suspension is designed to support large excursions while maintaining consistent behavior. The specified Xmax of 9.0 mm complements this approach by orienting the driver toward effective bass with a mechanical margin suited to demanding signals. The double silicone spider aids in centering and stability, a crucial factor for reliability and reducing unwanted noise during high excursion.

Treated Cone and "Field" Use

The radial cone with waterproof treatment (front and back) is an asset for real-world performance environments: humidity variations, transport, repeated assembly and disassembly. This protection does not replace a properly constructed enclosure but provides additional security to maintain consistent characteristics over time.

Finally, the specified dimensions (overall diameter 460 mm, height 209 mm) and weight (13.0 kg) allow precise anticipation of mechanical integration, handling, and compatibility with existing cabinetry.

Technical specifications