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Bose Professional ShowMatch SMS118 subwoofers are designed primarily to integrate with DeltaQ array loudspeakers and extend low-frequency response down to 29 Hz. The SMS118 enclosure width and integrated rigging allows fast integration in arrays with ShowMatch full-range modules using optional array frames and accessories. The portable-rated Baltic birch enclosure may also be used for ground-stack applications and includes an integrated mounting-pole adapter for use with other mid/high loudspeakers.
DeltaQ technology is the next-generation array design that allows “Q” (directivity) to vary with each module in the array for more consistent coverage over wide frequency range, reduced array weight and cost, and outstanding vocal clarity. Arrays can cover large vertical angles with fewer boxes.
ShowMatch DeltaQ companion 1 × 18-inch subwoofer for low-frequency extension down to 29 Hz with mixed mid/high and subwoofer ShowMatch arrays.
Bose Professional LF18 neodymium 18-inch, high-excursion, 4.5-inch voice coil, transducer provides maximum performance (same transducer as in Bose Professional RMS218).
Integrated 4-point “quick pin” rigging allows arrays of up to 18 subwoofers with 10:1 safety factor.
Front-grille mounted NL4 input, plus rear NL4 inputs, allow easy setup for “reversed box” cardioid arrays.
Designed for a wide range of applications, including:
Theaters
Houses of worship
Auditoriums
Performing arts venues
Arenas
Colors
Black
Enclosure Material
Baltic birch plywood
Grille
16-gauge (1.5 mm) perforated steel, powder-coated finish
Suspension/Mounting
4-point “quick pin” rigging, 4 × M10 top & 4 × M10 bottom inserts, M20 pole cup
Net Weight
136.5 lb (61.9 kg)
Product Dimensions (H×W×D)
21.2 in × 30.1 in × 30.5 in (540 mm × 765 mm × 775 mm)
EN 54-24 Certified
No
Frequency Range (-10 dB)
29 Hz – 300 Hz
Coverage, Horizontal
Omnidirectional
Calculated Maximum SPL @ 1 m
121 dB (free field/array), 127 dB (half-space/ground stack) continuous / 127 dB (free field/array), 133 dB (half-space/ground stack) peak
Nominal Impedance
4 Ω
Power Handling, long-term continuous
750 W
Power Handling, Peak
3000 W
Sensitivity (SPL/1 W at 1 m)
92 dB (free field/array), 98 dB (half-space/ground stack)
Coverage, Vertical
Crossover
60 Hz – 100 Hz, requires active crossover in DSP
Low-Frequency
1 × Bose Professional LF18 neodymium high-excursion 18 in (457 mm) woofer, 4.5 in (114 mm) voice coil
5 years
(1) installation guide
(1) ShowMatch SMS118 subwoofer
