QSC KS118 3600W 18" Powered Subwoofer

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PA SKU # QSC KS118 MFR # KS118 UPC # 684284076199
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6 In Stock & Ready to Ship Most orders placed before 3pm MST ship same day (except weekends and holidays).
  • Product Highlights
  • For Live Stage, Theater, DJ Setups
  • 18" Long-Excursion Woofer
  • Deep Mode for Low-Frequency Extension
  • 3600W Class-D Amplifier
  • Adjustable Crossover & Delay
  • Scene Save & Recall
  • Four Low-Noise, Heavy-Duty Casters
  • Vertical or Horizontal Deployment
  • M20 Threaded Pole Receiver
6 In Stock & Ready to Ship Most orders placed before 3pm MST ship same day (except weekends and holidays).

18-Inch 3600-Watt Active Subwoofer

The QSC KS118 is a high-output active subwoofer well suited for mobile entertainment, AV rental, event production, clubs, and performance venues. The 18" direct radiating driver is powered by a 3600W Class-D amplifier, which delivers high sound pressure levels with dynamic and musical sound reproduction of very-low frequencies.

The on-board DSP allows the user to save and recall variable delay and crossover settings, all the while protecting the system. Additionally, two KS118s can be deployed in a cardioid arrangement, which maximizes low-frequency output from the front, while minimizing energy around the sides and rear of the setup.

The KS118 is highly portable with four, rear-mounted, low-noise casters. The birch enclosure is rugged yet stylish and features comfortable aluminum handles and a top-mounted M20 threaded pole receptacle accepts a 35mm pole for easy vertical deployment with K.2 Series and other full-range loudspeakers.

  • High output with remarkable low-frequency performance
  • 3600W Class-D amplifier module
  • 18" long-excursion direct radiating driver
  • Omnidirectional or cardioid radiation modes (cardioid setup requires min 2 units)
  • Selectable DEEP mode for extremely low-frequency extension
  • Adjustable crossover and delay
  • Scenes for commonly used applications that can be saved/recalled
  • Refined, professional, and elegant appearance in any application
  • Rugged painted wood enclosure for lasting durability
  • Vertical or horizontal deployment (M20 threaded pole receiver for vertical setup)
  • Four low-noise, heavy-duty casters
  • Optional transport cover, temporary weather cover, KS-LOC security cover, and 35 mm loudspeaker pole accessories available
  • PA Speaker
  • Configuration: Active Subwoofer
  • Enclosure Type: Bass-Reflex Subwoofer
  • Total Power Capacity: 3600 W 
  • Amplifier Power Rating: 1 x 3600 W 
  • Amplifier Class: Class-D
  • Drivers
  • LF Driver: 1 x 18" / 457.2 mm Woofer
  • Connectivity
  • Audio I/O: 2 x Combo XLR-1/4" 3-Pin Female Balanced Line Input (Lockable)
  • 1 x XLR 3-Pin Male Balanced Line Thru/Output
  • Signal Processing
  • Filters: None
  • Digital Signal Processing: Delay, User Settings, Voicing Modes
  • Power
  • AC Input Power: Factory Selectable
  • 120 VAC, 60 Hz 
  • AC Power Connector: 1 x IEC Input (Locking)
  • Physical
  • Mounting: 1 x M201.38" / 35 mm 3/8"-16 Female (Top)
  • Handles: 2 x Each Side
  • Construction Material: Plywood
  • Dimensions: 30.9 x 25.2 x 20.5" / 784.9 x 640.1 x 520.7 mm (With Casters)
  • Weight: 104 lb / 47.2 kg