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QSC KS118 3600W 18 inch Powered Subwoofer

3,600-watt Powered Subwoofer with 18" LF Driver, 2 XLR/TRS Inputs, Omni/Cardioid Modes, DEEP Mode, Adjustable Crossover/Delay, Savable/Recallable Scenes, M20 Threaded Pole Socket, and Swivel Casters
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K10.2 10 inch Powered Speaker and KS118 18 inch Powered Subwoofer PA Bundle

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The QSC KS118 Will Beef Up Your PA with 3,600 Watts of Bass

Does your PA system need a bass infusion? Get the QSC KS118 — it delivers the goods. This 3,600-watt active subwoofer yields extreme output with impressive low-frequency performance. Its 18" long-excursion, direct-radiating driver facilitates exceptional punch while maintaining ample low-end extension.

Need more bass for electronic, dance, or club music? No problem. Activate the QSC KS118’s DEEP mode, and you’ll be shaking the rafters. Setup is a breeze, thanks to an adjustable crossover with savable/recallable scenes for common applications. Too much bass onstage? Just add a second KS118, place it in cardioid mode, and you’ll keep bass in its place. The QSC KS118 also includes an M20-threaded pole socket, swivel casters, and a rugged painted wood enclosure.

Related Videos: KS118 3600W 18 inch Powered Subwoofer

The KS Series packs massive power into a lightweight subwoofer

QSC's lightweight yet powerful KS Series sets a new standard for powered subwoofers. Their innovative Class D power modules are the epitome of efficient. Enjoy sonic clarity, robust output, and powerful digital signal processing. Premium-grade materials and advanced construction processes ensure reliability and durability. And deployment options allow for a range of live and installed applications.

QSC products deliver power, reliability, and portability

QSC KS118's PA loudspeakers, power amplifiers, and digital mixers bring live sound into the modern age. For over 40 years, QSC has been producing leading-edge sound products that meet even the most demanding standards. Sweetwater is proud to offer a full lineup of QSC's active PA speakers, passive PA speakers, ultra-efficient power amps, and advanced TouchMix mixers. Built to satisfy any live sound setup, QSC products deliver the perfect combination of power, reliability, and lightweight, compact portability.

QSC KS118 Powered Subwoofer Features:

  • 3,600-watt 18" powered subwoofer
  • 2 XLR/TRS combo inputs accommodate a variety of sources
  • Selectable DEEP mode for extra low-frequency extension
  • Omnidirectional and cardioid radiation modes (cardioid setup requires 2 units)
  • Adjustable crossover and savable/recallable scenes for common applications
  • Built-in limiter safeguards against excessive levels
  • M20-threaded sockets allow deployment in either vertical or horizontal positions
  • Locking IEC power connector prevents unexpected disconnections
  • Low-noise, heavy-duty casters enable easy rolling
  • Rugged painted wood enclosure

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PA Speaker Buying Guide

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Tech Specs

  • Powered/Unpowered: Powered
  • LF Driver Size: 18"
  • Total Power: 3600W Class D
  • Inputs: 2 x XLR-1/4" combo
  • Outputs: 2 x XLR
  • Frequency Range: 35Hz-111hz (-10 dB)
  • Frequency Response: 41Hz-98Hz (-6 dB)
  • Maximum Peak SPL: 136 dB SPL @ 1m
  • Mounting Options: Floor, Pole
  • Power Source: Standard IEC AC cable
  • Enclosure Material: Birch Plywood
  • Height: 25.2"
  • Width: 20.5"
  • Depth: 30.9"
  • Weight: 104 lbs.
  • Manufacturer Part Number: KS118

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Customer Reviews

4.8 out of 5

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Oh lord

Best speakers ever, give 100000 points
by Hector Carrillo from Woodhaven Michigan on

Ks118

All that waiting is finally finish, can't ask for nothing better ks118 is powerful bass, love it
by Anil from Kissimmee on
Music background: Djkid

Probably the best sub in the world.

I had the bose f1 subwoofer but when I discovered this subwoofer right here I was interested, I really wondered if this thing can blow the bose sub away, I heard a demo on the ks118 sub at guitar center and I wasn't actually in shock like I felt the bose f1 sub was about with it, but when the live sound employee put on a dubstep song and felt that bass hit I was like woah!!! Holy crap! I was tooken away, I needed this sub, I sold my bose f1 subwoofer saved up for this one and I'm more than happy with this sub, it has extreme output and sounds phenomenal, the bose f1 subwoofer is a phenomenal unit too, but only can go low to a certain extent just like the ks118, but the ks118 goes lower sounds better and goes a lot louder its really a shocker.. I've heard of the Yamaha dxs18xlf subwoofer too, I looked into that one too, but I went with this one, I'm pretty sure it's as good as this one or not as good, I don't see any single 18 going louder than this one can do, seriously.. or sound as good as this one at high levels, the ks118 looks rugged clean, very professional looking, and powerful looking, the Yamaha dxs18xlf is ugly looking no offense Yamaha haha..
by Alex from Arizona Phoenix on
Music background: Bass player & audiophile

Great Product, Even Better Service

4 mos into use, could not be happier with this sub. As a Mobile DJ, the KS118 has changed the depth of my sound. The ease of use is great. Previously had JBL PRX, upgraded to K.2 and the KS118.

I did have an issue with this sub 2nd time out, however, Sweetwater had a replacement at my door in 3 days. I'm glad I decided to order with Abraham here.
by Leroy from Downey, CA on
Music background: Mobile DJ

WOW!!

These are hands-down, the best subwoofers I've ever used. The Lows are so punchy you can feel it in your chest. No matter how hard we try to push them we cannot even get them to clip. Spend the money, buy a pair of these you won't regret it.
by Barely Devils from Michigan on
Music background: Gigging classic rock/country band
See also: Subwoofers, QSC, QSC PA Subwoofers
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