Bose ShowMatch SMS118 Subwoofer

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.

Bose ShowMatch SMS118 Features

• DeltaQ technology 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
• ShowMatch DeltaQ 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
• Integrated 4-point “quick pin” rigging allows arrays of up to 18 subwoofers with 10:1 safety factor
• Front-grill mounted NL4 input, plus rear NL4 inputs, allow easy setup for “reversed box” cardioid arrays

• SMS118 subwoofer1

• Single Module Performance
  • Frequency Response (-3dB): 32 - 250 Hz
  • Frequency Range (-10dB): 29 - 300 Hz
  • Recommended High-Pass Protection Filter: 30Hz with minimum 12-dB/octave filter
  • Nominal Coverage Pattern: omni with cardioid array configurations
  • Recommended Crossover: 60-100Hz (requires active crossover in DSP)
  • Power Handling, long-term continuous
  • Bose extended lifecycle test: 750 W
  • AES transducer test: 1250 W
  • Power Handling, peak
  • Bose extended lifecycle test: 3000 W
  • AES transducer test: 5000 W
  • Sensitivity (SPL/1W @ 1m)
  • Array (free field): 92 dB
  • Ground Stack (half space): 98 dB
  • Calculated Max. SPL @ 1m, peak
  • Bose extended lifecycle test
  • Array (free field): 127 dB
  • Ground Stack (half space): 133 dB
  • AES transducer test
  • Array (free field): 129 dB
  • Ground Stack (half space): 135 dB
• Transducers
  • Low Frequency: 1 x Bose LF18 neodymium 18-inch, high-excursion woofer (4.5-inch voice coil)
  • Nominal Impedance: 4 ohms
• Enclosure Materialbaltic birch plywood
• Finish2-part spray polyurethane coating, black
• Grille16-gauge (1.5 mm) perforated steel, powder-coated finish, black
• EnvironmentalIPx4
• Connectors2 x Neutrik® NL4 on rear, 1x NL4 front-grill mounted; all wired parallel
• Suspension/Mounting4-point “quick pin” rigging; 4x M10 top and 4x M10 bottom inserts; M20 pole cup
• Dimensions (HxWxD)21.2" x 30.1" x 30.5"
• Weight136.5 pounds