B&C Speakers 18TBW100

A 18" B&C Designed for the Demands of Low Frequencies in Sound Reinforcement

The B&C 18TBW100 belongs to the category of 46 cm drivers intended for the low frequency range, where power handling and mechanical stability make all the difference. Designed for high-performance subwoofer enclosures, it aims for solid and consistent reproduction, capable of handling high levels over time. Its positioning is clear: a transducer focused on "SUB / bass," built for substantial enclosures and serious integration into sound reinforcement speakers.

Intended Uses and Users

This speaker is aimed at loudspeaker manufacturers, integrators, sound technicians, and DIY enthusiasts seeking a 18-inch driver suitable for subwoofer enclosures, especially in bass-reflex configurations. With a sensitivity of 96 dB (1 W / 1 m) and high power capacity, it is particularly well-suited for sound reinforcement systems where a present bass, good high-level handling, and compatibility with powerful amplifiers are expected.

It is also relevant for demanding fixed installations (venues, clubs, event spaces) or mobile sound reinforcement, provided the enclosure volume and tuning can be respected. The goal is to achieve a clean low-frequency response while maintaining control in the upper bass region.

Design and Performance: What Makes the Difference

A Motor Designed to Handle Power

The 4.0" (100 mm) copper wire voice coil is at the heart of the 18TBW100: it contributes to power management and thermal behavior while maintaining a response suited to subwoofer applications. The ferrite magnet provides a well-known architecture for its stability and robustness-performance ratio, with consistent behavior in typical sound reinforcement environments.

Mechanical Durability and Reliability on the Road

For an 18" driver dedicated to bass, mechanical durability is essential. Here, the triple roll suspension and double siliconed spider are designed to keep precise control of the moving assembly and limit unwanted behaviors at high levels. The Xmax of 12.0 mm indicates a useful excursion capacity adapted to heavy bass demands, especially in well-dimensioned bass-reflex enclosures.

Membrane Treated for Realistic Use

The radial cone benefits from a waterproof treatment front and back, an advantage when the speaker is intended for enclosures likely to be exposed to variable conditions (transport, ambient humidity, etc.). This approach aims to preserve membrane consistency and speaker durability while remaining coherent with subwoofer use where the cone undergoes heavy work.

Load Optimization: Recommended Volume and Tuning

The manufacturer specifies a recommended enclosure volume of 200 liters with a tuning at 32 Hz. This recommendation provides clear guidance for designing an enclosure capable of exploiting the low-frequency spectrum. With an Fs of 35 Hz and a Qts of 0.39, this profile is generally suited to bass-reflex enclosures oriented toward subwoofer use, provided volume, tuning, and implementation (enclosure rigidity, properly sized ports, appropriate filtering and limiting) are respected.

Technical specifications