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QSC

QSC KS118 Active 18" Subwoofer

  • Based on 69 reviews
Condition: New
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Availability: Only 1 left in stock, order soon!
Fulfilled by Frontrow Tech LLC

Arrives Sunday, Mar 29
Order within 22 hours and 24 minutes
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Features

  • A very high output active subwoofer producing impressive low frequencies for mobile entertainment, AV production, clubs and performance venues
  • Features an 18" direct radiating driver powered by a 3600W Class D amp, to deliver high SPL with dynamic and musical sound reproduction of very low frequencies
  • On-board DSP optimizes and protects system performance as well as offers advanced capabilities such as the ability to array two units in a cardioid arrangement
  • Highly transportable, the rugged enclosure features comfortable handles with a professional and elegant appearance in any application, plus four low noise casters
  • An M20 threaded pole receptacle accepts a 35 mm pole for easy vertical deployment with full-range loudspeakers
  • Features a selectable DEEP mode for extremely low frequency extension as well as adjustable crossover and delay
  • Optional KS-LOC security cover prevents unauthorized tampering of controls

Description

The KS118 is a very high output active subwoofer producing impressive low frequencies for mobile entertainment, AV production, clubs and performance venues. Featuring an 18-inch direct radiating driver powered by a 3600 watt class D amplifier, the KS118 delivers high sound pressure levels with dynamic and musical sound reproduction of very low frequencies. On-board DSP optimizes and protects system performance as well as 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.

Brand: QSC


Speaker Maximum Output Power: 3600 Watts


Frequency Response: 98 Hz


Connectivity Technology: RCA, XLR


Audio Output Mode: Omnidirectional


Mounting Type: Pole Mount


Material: Plastic Or Metal


Model Name: KS118 Active 18"


Speaker Type: Subwoofer


Special Feature: Bass Boost


Recommended Uses For Product: Musical


Compatible Devices: Smartphone, Tablet, Laptop


Subwoofer Diameter: 18 Inches


Unit Count: 1.0 Count


Surround Sound Channel Configuration: 2.0


Color: NEGRO


Included Components: Subwoofer


Product Dimensions: 36"D x 30"W x 23"H


Item Weight: 104 Pounds


Is Waterproof: FALSE


Warranty Type: Limited


Number of Items: 1


Control Method: Touch


Wireless Communication Technology: Bluetooth


Speaker Size: 18 Inches


Power Source: Corded Electric


Woofer Diameter: 18 Inches


Tweeter Diameter: 1 Inches


Customer Package Type: FFP


Audio Driver Type: Dynamic Driver


Audio Driver Size: 18 Inches


Subwoofer Connectivity Technology: Wired


Number of Power Levels: 1


Specific Uses For Product: mobile entertainment, AV production, clubs, performance venues


UPC: 684284076199


Manufacturer: QSC


Shape: rectangular prism


Item Weight: 104 pounds


Item model number: KS118


Date First Available: August 13, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Mar 29

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Powerful portable Great quality
Love this Sub. Great sound and response. Powerful
Reviewed in the United States on January 31, 2026 by Joey Uranga

  • Great Subs!
I bought 2 of these before the TARRIFFS. Now they are$500 more everywhere.... these are Great subs for djs.
Reviewed in the United States on September 17, 2025 by Charles Galloway

  • Powerful Sub for Mobile DJ Events
The QSC KS118 is a beast of an 18-inch powered subwoofer, delivering chest-thumping bass down to 35Hz that’s ideal for weddings, parties, and larger gigs in my mobile DJ setup. Its 3,600W Class D amp drives massive SPL up to 136dB peak, pairing perfectly with QSC tops like my KC12s for full-range punch. Key Strengths • Deep extension in DEEP mode and cardioid array option (with 2+ units) rejects rear sound, keeping bass focused on the dance floor without stage bleed. • Built-in DSP with presets, gain control, and low-noise fan make setup simple for quick loads in Western NY venues up to 60 miles out. • Rugged plywood cabinet with casters (77 lbs) handles road abuse; M20 pole mount stacks easily with mains. Most Important to Know Omni or cardioid modes optimize for any space—cardioid shines for stage use. Runs clean even pushed hard, with musical lows that fill rooms effortlessly for all genres. What Other Customers Should Know Pros like DJs rave about its output-to-size ratio over older models; EQ right and it thumps without distortion. ... show more
Reviewed in the United States on February 21, 2026 by Andrew Correa

  • The real deal.
This is an excellent unit for my mobile wedding / pub gigs. There are products that go 'lower' or go 'louder' but this thing delivers excellent punchy bass that fills the room day-in and day-out at a great price. Combine it with a screw-in type crank-handle speaker pole and you have a solid base for even the biggest tops. Pairs great with my 68lb SRX812's. The included built-in casters are quiet and strong. Don't forget to order the factory cover to keep your investment safe! ... show more
Reviewed in the United States on December 3, 2021 by DJ Outlît

  • Shipment not so great sub arrived damaged
Sub itself was good shipment not so much it arrived damaged.
Reviewed in the United States on February 6, 2020 by Amazon Customer Amazon Customer

  • Awesome product!!!
Is this sub slightly over price, Yep!! Is it worth the money especially if your a moble Dj, Yep!! Does this sub hit hard and sounds impressive, abso-fu@king-lutely!! (check out what most clubs use) Is it a solidly build unit, Yep!! Are there better subs out there, Yep!! Would I buy a second one, yep already did. ... show more
Reviewed in the United States on April 3, 2020 by RICK L

  • You want this!
Had this for a week and a half now and love it sounds great and was shipped with care and discretion. Arrived ahead of time. Put it in my home and haven’t even run it very hard yet but being an 18” is it’s very impressive. I bet my neighbors hate me now!!!
Reviewed in the United States on January 10, 2022 by SMEE

  • Soo nice,and vary good
Very good
Reviewed in the United States on February 5, 2025 by Maurice junior dayard

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