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L-Acoustics SB18

Compact subwoofer featuring a single 18 in speaker with high excursion drivers and optimized laminar vents to maximize LF efficiency - deployed in omnidirectional or cardioid patterns in stacked or flown configurations

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Compact passive subwoofer with a high-excursion, direct-radiating 18 in transducer mounted in a dual bass-reflex tuned enclosure with laminar vents for increased LF efficiency. The enclosure cabinet is constructed of premium grade Baltic beech and birch plywood. The enclosure front is protected by a coated steel grill and an acoustically transparent fabric. The enclosure integrates four ergonomic handles, and panel corner stops for enclosure protection. The captive hardware allows for rigging and combining with other loudspeakers of the same family. Dedicated rigging accessories allow for flown or stacked configurations. Combining two or more elements with associated presets achieve omnidirectional or cardioid directivity patterns. Exclusively driven and protected by a proprietary amplified controller through a dedicated preset.


Max SPL 138 dB
Low frequency limit 32 Hz
Transducers LF: 1 x 18"
Weight 52 kg / 115 lb
Directivity standard or cardioid configurations