QSC KS118 Active Subwoofer

3600W Active, Ported Sub - 18" Woofer - Class D

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What's in the box:

  • KS118
  • 4 X Low-Noise, Heavy Duty Casters
  • 6-year Limited Warranty


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Very High Output Active Subwoofer Producing Impressive Low Frequencies

QSC's KS118 (QSC-KS118) is a very high output active subwoofer producing impressive low frequencies that delivers high sound pressure levels with dynamic and musical sound reproduction. On-board DSP optimizes/protects system performance and offers advanced capabilities such as the ability to array two units in a cardioid arrangement. Highly transportable, the rugged enclosure features comfortable handles and four low noise casters. An M20 threaded pole receptacle accepts a 35 mm pole for easy vertical deployment with full-range loudspeakers.


  • 3600W Active, Ported Subwoofer
  • 18 Inch (460 Mm) Long Excursion Direct Radiating Driver
  • Omni-directional or cardioid radiation modes (cardioid setup requires min. 2 units)
  • Selectable DEEP™ Mode for Extremely Low Frequency Extension
  • Adjustable Crossover And Delay

QSC, LLC, is a globally recognized leader in the design and manufacture of professional audio, video and control system solutions. QSC offers best-in-class products, technical support and services serving Systems, Cinema and Live-sound markets globally. Their product range includes power amplification, loudspeaker, digital signal processing (DSP), video, controls and digital mixers.

Specifications for the QSC KS118

{ "Configuration" : "Direct Radiating", "LF Transducer" : "18-inch (460 mm), Cone", "Frequency Response (-6 dB)" : "41 Hz - 98 Hz", "Frequency Range (-10 dB)" : "35 Hz - 111 Hz", "Nominal Coverage Angle" : "Omni-directional or cardioid radiation modes (cardioid setup requires min. 2 units)", "Maximum Rated SPL1" : "136 dB @ 1 m (peak)", "Amplifier" : [ "Class D", "3600 W (peak)" ], "Cooling" : "Low-noise, variable speed fan", "Controls" : [ "Power On/Off", "Gain Control", "Rotary encoder", "2 x selection buttons" ], "Indicators" : [ "2 x Power LED (front and rear)", "Input Signal LED", "Limiter active LED" ], "Connectors" : [ "2 x locking XLR/F ¼ in combo", "2 x XLR/M (Loop-Thru Output)", "1 x Locking IEC Power Connector" ], "AC Power Input" : { "Universal power supply" : "100 – 240 VAC, 50 – 60 Hz" }, "AC Power Consumption (1/8th Power)" : "100 VAC, 3.6 A / 120 VAC, 3.0 A / 240 VAC, 1.7 A", "Enclosure Details" : { "Enclosure" : "18 mm Birch Plywood", "Color" : "Black (RAL 9011)", "Grille" : "16-gauge Black Powder Coated Steel", "Dimensions (HxWxD)" : [ "640 x 520 x 785 mm (incl. casters)", "25.2 x 20.5 x 30.9 inches (incl. casters)" ] }, "Net Weight" : "(including casters) 47 kg (104 lbs)", "Shipping Weight" : "56.5 kg (124.5 lb)", "Regulatory" : "CE, WEEE, UL, China RoHS, RoHS II, FCC Class B", "Included Accessories" : "4 x Low-Noise, Heavy Duty Casters", "Optional Accessories" : [ "KS118-CVR Transport Cover", "KS-LOC Lock-Out Cover", "SP-26 and SP-36 Loudspeaker Poles", "SP-16X Extension Pole" ] }

Research Materials for KS118 (QSC-KS118)

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KS118 (QSC-KS118) Specifications

KS118 (QSC-KS118) Quick Start Guide

KS118 (QSC-KS118) User Guide

KS118 (QSC-KS118) Brochure

KS118 (QSC-KS118) Frequently Asked Questions (FAQ)

K-Series Application Guide

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