Bose SHOWMATCH SMS118 Passive Subwoofer - 18in
SKU: 55354961490

Bose SHOWMATCH SMS118 Passive Subwoofer - 18in

Sale price$1754.55 Regular price$1949.50
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Description

Bose SHOWMATCH SMS118 Passive Subwoofer - 18inIdeal for theatres, performance venues, auditoriums, and houses of worship, the Bose Professional ShowMatch SMS118 is a subwoofer module for arrays designed to integrate with DeltaQ array loudspeakers. Offering low frequency extension down to 29 Hz, this powerful sub sports an 18" neodymium driver with a max power handling of 750W RMS. With a specifically designed Baltic birch enclosure and integrated rigging, this subwoofer is designed to quickly

Ideal for theatres, performance venues, auditoriums, and houses of worship, the Bose Professional ShowMatch SMS118 is a subwoofer module for arrays designed to integrate with DeltaQ array loudspeakers. Offering low-frequency extension down to 29 Hz, this powerful sub sports an 18" neodymium driver with a max power handling of 750W RMS.

With a specifically designed Baltic-birch enclosure and integrated rigging, this subwoofer is designed to quickly integrate with ShowMatch full-range array modules and can also be used for ground-stack deployments. With the convenient 4-point quick pin rigging system, the SMS118 supports up to 18 subwoofer modules without difficulty. The SMS118 includes a pole mounting adapter for use with other mid- and high-frequency loudspeakers.

DeltaQ Technology
DeltaQ is the next-generation array design that allows Q (directivity) to vary with each module in the array for more consistent coverage over a wide frequency range, reduced array weight and cost, and outstanding vocal clarity. Arrays can cover large vertical angles with fewer boxes.

1 x 18" Subwoofer
The SMS118 features an LF18 18" neodymium high-excursion subwoofer for low-frequency extension down to 29 Hz with mixed mid/high and subwoofer ShowMatch arrays. The 18" transducer sports a 4.5" voice coil and provides excellent performance, being essentially the same transducer as in the Bose Professional RMS218.

Tour-Level Sound Output
  • LF18 neodymium high-excursion 18" woofer
  • 4.5" voice coil
  • 29 to 300 Hz frequency range
  • Maximum power handling of 750W RMS, 3000W Peak
  • 60 to 100 Hz crossover (requires active crossover in DSP)
4-Point Quick Pin Rigging
The integrated 3-point quick pin rigging system allows for arrays of up to 18 subwoofers with 10:1 safety factor.

NL4 Inputs in Front and Rear
The SMS118 features front-grille-mounted a NL4 input as well as rear NL4 inputs, allowing for easy setup of reversed box cardioid arrays.

Items Included
  • Bose Professional ShowMatch SMS118 18" Passive Subwoofer
  • Limited 5-Year Manufacturer Warranty

Specifications

COMPLIANCE

  • EN 54-24 Certified: No

PHYSICAL

  • 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
  • Product Dimensions (H×W×D): 21.2 in × 30.1 in × 30.5 in (540 mm × 765 mm × 775 mm)
  • Net Weight: 136.5 lb (61.9 kg)

PERFORMANCE

  • 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: Omnidirectional

TRANSDUCERS

  • 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
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 55354961490

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DCP
Omaha, US
★★★★★ 5
Great value, perfect for our infant room!
Color: Black, Size: Standard - 4 Panel
Great product, sturdy design and easy to build! It is a fairly light weight item, which aids in the maneuverability of the divider. The color was as described and is dark enough to block the light from our sleeping infants! I do love that you are able to see through the slats and see the child sleeping- if you are looking for something with MORE privacy, this is not it. It has great coverage area and is dark and a wonderful value for the price, however, you are able to see through the areas where each panel connects!
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Reviewed in the United States on August 18, 2025
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Tammy Lee Morris
Dallas, US
★★★★★ 1
Don’t waste your money or time!
Color: White, Size: Standard - 4 Panel
Don’t waste your money. The instructions make no sense and the metal poles are either sized wrong for the product or screw holes are incorrectly placed, but no two poles matched in size and placement making it impossible to put this together without the panels being warped. No matter how I tried to switch the poles to see if I had them wrong, they always turned out warped and incorrectly fit. I finally gave up and threw everything out - I wasted $50 on this junk and because I didn’t try to put it together immediately after I bought it, it is way too late for a refund. Lesson learned!
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Reviewed in the United States on October 1, 2025
E
Verified Purchase
Edward Hugee
Chelsea, US
★★★★★ 3
Sturdiness
Color: Black, Size: Standard - 4 Panel
Not so sturdy. It worked well for its intended job, but, it has to be secured to the floor for long term use.
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Reviewed in the United States on March 30, 2026
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Edith Appleton
Alexandria, US
★★★★★ 5
Hide my hot water heater
Color: Grey, Size: Standard - 4 Panel
I used the divider to hide my hot water heater. It's perfect and looks great
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Reviewed in the United States on April 21, 2026
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Janet Lanier
Pawtucket, US
★★★★★ 4
Wobbly but Usable
Color: Grey, Size: Standard - 4 Panel
A bit wobbly, but good enough for the price when you need a solid background for remote work calls.
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Reviewed in the United States on May 6, 2026

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