Bose SMS118 Data Sheet
TECHNICAL DATA
ShowMatch™ SMS118
DeltaQ™ array subwoofer
Product Overview
Bose ShowMatch™ SMS118 subwoofer is designed primarily to integrate with DeltaQ™ array loudspeakers and extend lowfrequency 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.
Key Features
• DeltaQ™ technology – defines the next-generation in loudspeaker array design with selectable coverage patterns that more
precisely direct sound to audience areas for improved sound quality and vocal clarity with fewer boxes versus line arrays.
• ShowMatch™ companion 1x 18” subwoofer – for low-frequency extension down to 29 Hz with mixed mid/high and subwoofer
ShowMatch arrays
• Bose LF18 neodymium 18-inch, high-excursion, 4.5-inch voice coil, transducer provides maximum performance (same
transducer as in Bose RMS218)
• Integrated 4-point “quick pin” rigging – allows arrays of up to 18 subwoofers with 10:1 design factor
• Front-grill mounted NL4 input, plus rear NL4 inputs – allow easy setup for “reversed-box” cardioid arrays
• Integrated pole-cup adapter – allows use with other mid/high loudspeakers and accessory mounting poles
• Removable side guards – provide rigging guard for portable applications. Easily removed for permanent installs to reduce
width and improve sight lines
PROFESSIONAL
Technical Specifications
SINGLE MODULE PERFORMANCE
Frequency Response (-3 dB) (1) 32 – 250 Hz
Frequency Range (-10 dB) 29 – 300 Hz
Recommended High-Pass Protection Filter 30 Hz with minimum 12-dB / octave filter
Nominal Coverage Pattern omni with cardioid array configuations
Recommended Crossover 60-100 Hz (requires active crossover in DSP)
Bose extended-lifecycle test
Array (free field) Ground Stack (half space) Array (free field) Ground Stack (half space)
Power Handling, long-term continuous 750 W 750 W 1250 W 1250 W
Power Handling, peak 3000 W 3000 W 5000 W 5000 W
Sensitivity (SPL/ 1W @ 1 m) (2) 92 dB 98 dB 92 dB 98 dB
Calculated Maximum SPL @ 1 m (3) 121 dB 127 dB 123 dB 129 dB
Calculated Maximum SPL @ 1 m, peak 127 dB 133 dB 129 dB 135 dB
TRANSDUCERS
Low Frequency 1 x Bose LF18 neodymium 18-inch, high-excursion woofer (4.5-inch voice coil)
Nominal Impedance 4 ohms
PHYSICAL
Enclosure Material Baltic birch plywood
Finish Two-part spray polyurethane coating, black
Grill 16-gauge (1.5 mm) perforated steel, powder-coated finish, black
Environmental IPx4
Connectors 2 x Neutrik® NL4 on rear, 1x NL4 front-grill mounted; all wired parallel
Suspension / Mounting 4-point “quick pin” rigging; 4x M10 top and 4x M10 bottom inserts; M20 pole cup
Dimensions (H x W x D) 21.2” x30.1” x30.5” (540 x 765 x 775 mm) / W: XX side guards removed
Net Weight 136.5 lbs (61.9 kg)
Shipping Weight 145 lbs (65.8 kg)
Accessories rigging frames, ground stack bracket, short quick pins
(4)
AES transducer test
(5)
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TECHNICAL DATA
Level (dB−SPL/1W @ 1m
ShowMatch™ SMS18
DeltaQ™ array subwoofer
Frequency Response
120
)
110
100
90
80
70
60
20 100 1000 10000 20000
Frequency (Hz)
Mechanical Diagrams
PROFESSIONAL
Footnotes
(1) Frequency response and range measured on-axis in an anechoic environment, with recommended bandpass and EQ.
(2) Sensitivity measured with indicated boundary conditions, recommended bandpass and EQ, referenced to 1W/m.
(3) Maximum SPL calculated from sensitivity and power handling specifications, exclusive of power compression.
(4) Bose extended-lifecycle test using pink noise filtered to IEC268-5, 6-dB crest factor, 500-hour, full-power duration.
(5) AES standard component power handling test: pink noise 60-18000 Hz bandpass, 6-dB crest factor, 2-hour duration.
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