B&C Speakers 18SW115

A B&C 18-Inch Designed for High-Level Bass Cabinets

The B&C 18SW115 fits within the logic of professional subwoofer speakers: delivering solid, stable, and reproducible bass even when the system operates for extended periods at high levels. Its 18-inch (46 cm) format clearly targets "bass" applications both front-facing and as reinforcement, with a performance-oriented approach (power handling, excursion, cooling) rather than domestic hi-fi. For cabinet designers, it is the type of transducer chosen when impact, a solid low-end foundation, and reliable operation are required.

Who Is the B&C 18SW115 For?

This speaker is intended for cabinet builders, sound contractors, integration workshops, and technicians involved in repair/upgrading of professional subwoofers. It is particularly suitable if you want to load an 18-inch driver in a coherent volume for sound reinforcement (club, live, events) and achieve firm bass capable of following powerful amplifications without strain.

It may also interest advanced DIY projects, provided the load parameters, port tuning, and protection (filtering, limiters) appropriate for a transducer of this level are respected.

Performance and Design: What Makes the Difference in the Field

Power Handling and Thermal Stability

With 3400W AES at 8 Ohms, the 18SW115 is designed to withstand sustained programs. Its 115 mm voice coil (4.5 inches) made of copper wire fits a typical architecture of high-end subwoofers: more surface area, better energy management capacity, and a useful reserve when peaks follow each other. The result: more consistent behavior, especially appreciated in intensive use (long sets, high temperature, heavy compression).

Deep Bass, Tuning, and Recommended Volume

The manufacturer specifies a recommended enclosure volume of 150 liters with a tuning at 35Hz. This guideline provides a clear framework to design an "infra/low" oriented cabinet: aiming for solid extension and bass that remains clear. The Fs at 32Hz supports this by enabling effective reproduction of low frequencies when the enclosure and tuning are properly optimized.

Mechanical Control: Excursion and Suspension

The 18SW115 features an Xmax of 11.9 mm, sized for the high demands typical of a subwoofer. The triple roll suspension contributes to excursion stability and control maintenance as levels increase. The double siliconized spider enhances consistency and mechanical durability over time, a crucial point to limit performance variations between gigs or after many hours of use.

Reliability and Environmental Resistance

The radial cone benefits from a waterproof treatment front and back, useful for better resistance to humidity, condensation, and transport stresses. For systems regularly taken out (truck, setup/breakdown, stage), this kind of detail contributes to the transducer's longevity and performance stability.

Technical specifications

Rackable	No	Type	Speakers
Category	sound reinforcement accessory

Nominal Diameter	18 inches (46 cm)	Qts	0.3
Power	3400W AES	Xmax	11.9 mm
Impedance	8 Ohms	Suspension	triple roll
Sensitivity	97 dB 1W/1m	Cone	radial with waterproof treatment front and back
Frequency Response	35Hz to 1.5KHz	Spider	double siliconized
Voice Coil	4.5 inches (115 mm) copper wire	Total Diameter	460 mm
Magnet	Neodymium	Height	242 mm
Recommended Enclosure	150 liters with tuning at 35Hz	Weight	11.9 kg
Fs	32Hz