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QSC Audio KS118 3600w 18" Active Subwoofer

Ideal for Live Music Venues, Clubs & DJ's

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Product Description

The KS118 Is a versatile, high output active subwoofer with excellent low frequencies that is suitable for live music venues, clubs, and DJ’s. A durable construction and in-built handles make it simple to transport, while an M20 threaded pole means you can position it vertically along with full-range loudspeakers.

Power & Performance

Featuring an 18" direct radiating driver (which is powered using a 3600 W Class D amp), this subwoofer delivers serious power – with high sound pressure levels that maintain dynamic sound reproduction, even at very low frequencies. With DSP on-board, this works to protect and optimise the performance of the system. It also allows you to arrange two units in a cardioid manner.

Key Features:

  • Includes Four Low Noise, Heavy-Duty Casters
  • Very High Output
  • Excellent Low Frequency Performance
  • 6-Year Warranty (Once You have Registered Your Product)
  • Vertical or Horizontal Positioning (Use the M20 Threaded Pole Receiver for a Vertical Setup)
  • Durable, Wood Enclosure
  • Scenes Allows for Commonly-Used Applications to be Saved and then Recalled for Future Use
  • Adjustable Delay and Crossover
  • DEEP Mode – Very Low Frequency Extension
  • 3600-Watt Class D Amp Module
  • 18" Excursion Direct Radiating Driver
  • Cardioid/Omnidirectional Radiation Modes (Cardioid Requires at Least 2 Units)


  • Dimensions (H x W x D): 25.2" x 20.5" x 30.9"
  • Weight (Including Casters): 47kg
  • Accessories (Included): 4 x Low-Noise, Heavy Duty Casters
  • Colour: Black
  • Grille: 16-Gauge Black Powder Coated Steel
  • Enclosure: 18mm Birch Plywood
  • Configuration: Direct Radiating
  • LF Transducer: 18-Inch (460mm) Cone
  • Frequency Response (-6dB): 41 Hz – 98 Hz
  • Frequency Range (-10dB): 35 Hz – 111 Hz
  • Nominal Coverage Angle: Omni-Directional or Cardioid Radiation Modes (Cardioid Setup Requires min. 2 Units
  • Maximum Rated SPL: 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, 3.6A / 120 VAC, 3.0 A / 240 VAC, 1.7 A
QSC Audio
Speaker Size
Number of Speakers

Customer Reviews


6 reviews





Mr Ambikaiseelan Nadesan25th Dec 2023

Value 4Looks 5

Mr Arthur Gibson31st Oct 2023

Value 3Looks 3Durability 3Sound 4

Mr Kian McIntosh22nd Jan 2023

QSC K118 Not as bass'y as i thought it would be for 3600w. More of a clean bass than a bass in your face sub.

Value 3Looks 5Durability 4Sound 3

Mr Myron Brito14th Jan 2023

Value 4Looks 5Durability 5Sound 5

Mr Deepak Sanghani12th Jan 2023

Value 5Looks 5Durability 5Sound 5

Mr Daniel Brown10th Jul 2020

Absolutely amazing subwoofer

Value 5Looks 5Durability 5Sound 5

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How do I use instant finance?

It's simple! Just add the products you want to your basket and click the "Checkout" button in your basket. Go through the checkout process and tick the "Finance" option under "Select Your Payment Method". You can then choose which finance term you'd like to apply for, and change your deposit if you wish.

At the end of the checkout you'll be taken to the V12 Finance web site. This is where your finance application is processed. Assuming your application is accepted you'll be able to place your deposit and confirm your order right there.

Then, your order will come through to Andertons and we'll send you the goods. Get approval before 3pm and we'll send your order out the same working day (stock permitting) for next working day delivery!

Who can apply for finance?

You must: spend over £300, be at least 18 years of age, have been a UK resident for 3 years or more, be able to make repayments by Direct Debit, be in regular employment (minimum of 16 hours per week) including self-employment, or in permanent residence with your partner who is in regular employment.

Read More About Online Finance

Andertons Music Company's Registered Office: 58-59 Woodbridge Road, Guildford, GU1 4RF. Andertons Music Company acts as a credit broker and not a lender and only offers credit products from Secure Trust Bank PLC trading as V12 Retail Finance. Not all products offered by Secure Trust Bank PLC are regulated by the Financial Conduct Authority. Andertons Music Company is authorised and regulated by the Financial Conduct Authority, firm registration number 716155. Credit provided subject to age and status.