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QSC

QSC KS118 Active 18" Subwoofer

  • Based on 69 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Jun 18
Order within 5 hours and 39 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


Audio Output Mode: Omnidirectional


Mounting Type: Pole Mount


Enclosure Material: Plastic Or Metal


Speaker Type: Subwoofer


Additional Features: Bass Boost


Antenna Location: Musical


Subwoofer Diameter: 18 Inches


Color: NEGRO


Is Waterproof: FALSE


Warranty Type: Limited


Control Method: Touch


Speaker Size: 18 Inches


Woofer Diameter: 18 Inches


Tweeter Diameter: 1 Inches


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


MP3 player: No


Controller Type: Corded Electric


Frequency Response: 98 Hz


Number of Audio Channels: 2.0


Connectivity Technology: RCA, XLR


Wireless Technology: Bluetooth


Subwoofer Connectivity Technology: Wired


Connectivity Protocol: Bluetooth


Power Source: Corded Electric


Brand: QSC


Model Number: KS118


Model Name: KS118 Active 18"


Built-In Media: Subwoofer


Warranty Description: 6-Year Warranty with product registration


Number of Items: 1


Customer Package Type: FFP


UPC: 684284076199


Manufacturer: QSC


Age Range Description: Adult


Item Type Name: Subwoofer


Speaker Maximum Output Power: 3600 Watts


Number of Power Levels: 1


Unit Count: 1.0 Count


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


Item Weight: 104 Pounds


Compatible Devices: Smartphone, Tablet, Laptop


Compatible with Vehicle Type: Car


Audio Driver Type: Dynamic Driver


Audio Driver Size: 18 Inches


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Jun 18

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.

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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • 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
    • 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
    • Horrible shipping or manufacturing on this one
Review Image by Trandafirescu
Review Image by Trandafirescu
The sub as shown in the pics came damaged. The power led is somewhere in the back of the sub also shown in pics. Do not buy this on amazon. Go at it local store, open it, try it, verify that everything is as it should be.
Reviewed in the United States on March 22, 2026 by Trandafirescu
    • 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
    • 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
    • Shipment not so great sub arrived damaged
Review Image by Amazon Customer
Sub itself was good shipment not so much it arrived damaged.
Reviewed in the United States on February 6, 2020 by Amazon Customer
    • 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

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