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QSC KS118 18" 3600W Active Subwoofer

QSC KS118 18" 3600W Active Subwoofer

Regular price $1,999.99 USD
Regular price Sale price $1,999.99 USD
Sale Sold out
Key Features
  • For Live Stage, Theater, DJ Setups
  • 18" Long-Excursion Woofer
  • Deep Mode for Low-Frequency Extension
  • 3600W Class-D Amplifier
  • Adjustable Crossover and Delay
  • Scene Save and Recall
  • Four Low-Noise, Heavy-Duty Casters
  • Vertical or Horizontal Deployment
  • M20 Threaded Pole Receiver

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


QSC KS118-NA Specs

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
LF Driver 1 x 18" / 457.2 mm Woofer
Audio I/O 2 x Combo XLR-1/4" TRS 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
AC Input Power Factory Selectable:
120 VAC, 60 Hz 
AC Power Connector 1 x IEC Input (Locking)
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
Item # QSKS118NA
Manufacturer QSC
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