B&C Speakers 18RBX100

A "sub" oriented transducer in the B&C spirit: efficiency, power handling, reliability

The B&C 18RBX100 fits within the logic of low-frequency drivers intended for sound reinforcement: delivering high output, good efficiency, and robust construction for enclosures subjected to heavy demands. With its ferrite magnet, large diameter voice coil, and reinforced mechanics (suspension and spiders), it targets use as a SUB or in low bass/infra depending on your speaker architecture and crossover. It is a relevant choice when seeking an 18-inch driver capable of delivering dense, clean, and durable bass, suitable for both mobile setups and installations.

Who is the B&C 18RBX100 for?

This 18-inch speaker is aimed at integrators, speaker manufacturers, rental companies, service providers, and DIY enthusiasts who want to recone a cabinet or build a coherent bass-reflex subwoofer around a transducer with high power handling. It is particularly suitable for sound reinforcement systems where high acoustic pressure is expected: electronic music, live, club, events, front-of-house, or bass reinforcement. Its recommended enclosure and electromechanical parameters (Fs, Qts, Xmax) provide a reliable basis for designing a properly sized enclosure and tuning.

Design and key elements: for deep, controlled, and durable bass

100 mm voice coil and ferrite motor: the "power + control" combination

The 4.0-inch (100 mm) copper voice coil is sized to handle high power levels while maintaining good control of cone movement. Paired with a ferrite magnet motor, it aims for stable bass response and mechanical durability suited to typical subwoofer demands (large excursions, continuous power, transients).

Dual-roll suspension, double siliconed spider: mechanical stability at high excursion

For an 18-inch subwoofer, the mechanics make the difference. Here, the dual-roll suspension and double siliconed spider contribute to the stability of the moving assembly and consistent behavior at high output levels. The result: cleaner bass, less mechanical distortion, and greater reliability in operation.

Curvilinear treated cone: a diaphragm designed for stage and field use

The curvilinear cone receives a waterproof treatment applied front and back. This feature is appreciated in sound reinforcement applications where conditions can vary (transport, humidity, usage constraints). The treatment also helps maintain the cone's consistency over time while preserving the main goal: delivering a solid foundation and good projection in the low-frequency range.

Technical specifications