QSC KLA181 Active Line Array Subwoofer

Your venue installation deserves the KLA181 powered subwoofer. Ready to be flown or stacked, this super-efficient QSC sub pushes 135 dB SPL from 1000 watts.

Get ready to fly with the QSC KLA181. This active line array subwoofer puts you in control of your live sound, giving you some DEEP ways to tailor your sound to the venue. When the KLA181 pushes its 1,000 Watts of Class-D power into the crowd, it draws upon QSC's DEEP DSP algorithm, its efficient power amp module, and GuardRail peak protection technology to deliver deeply smooth, extended bass response. Best of all, the KLA181 is easy to incorporate into your line array; just lift, click, and play.

What's in the Box

At a glance, this 18-inch, direct radiating sub features the DEEP DSP algorithm, GuardRail, Auto Standby mode, balanced line-level XLR input with an XLR thru connector, Attenuation Control, LED indicators, and a handy polarity switch for low-frequency directivity control.

Take Bass to a DEEPer Level

To match the other powerful models in QSC's KLA Series of speakers, the KLA181 offers an efficient Class-D power amp module in a 1,000 Watt configuration that enables up to 5 KLA models to be driven off of a single 15 Amp, 120V electrical circuit. Sound good?

Increased bass response comes courtesy of the DEEP DSP algorithm, accessible by a rear-panel switch. In DEEP mode, each KLA181 actively manages potentially damaging low-frequency transients, making efficient use of your 1000 Watts. GuardRail circuitry protection keeps the amplifier module in check, preventing destructive clipping from killing a show.

Automatically Goes into Energy-Saving Mode

read more No worries if there's a lull in between sets or you simply forget to power down the unit -- the subwoofer automatically goes into Auto Standby mode after five minutes of inactivity. It stands by until the audio starts up again, at which point the KLA181 wakes up for immediate output.

Flexible Setup Options

Ideal for a variety of portable and permanently installed applications, from live entertainment to houses of worship, QSC's KLA181 can be flown with M10 fittings or the optional KLA AF12 array frame. You can hang up to 480 pounds, with a maximum 2 KLA181 enclosures, in an array. Thanks to its integrated threaded pole mount, the subwoofer can also serve as the base for up to two KLA12 enclosures.

For your convenience, the KLA181 provides both a balanced line-level XLR thru jack and a locking AC power through jack for daisy chaining multiple KLA Series loudspeakers. All units are housed in impact-resistant ABS enclosures.

Learn more with this video from QSC:


- Vented, powered subwoofer with 18" LF driver
- 1,000-Watt Class-D continuous power module
- DEEP DSP algorithm brings out low end
- GuardRail peak protection technology
- Auto Standby power-saving function
- High acoustic output (135 dB SPL peak)
- Frequency range down to 33 Hz (-10 dB)
- Extensive DSP further enhances and protects performance
- PowerCon Input and Thru connections
- Threaded pole-cup receptacle for free-standing applications
- Suspension made possible via M10 fittings or KLA12AF Array Frame
- Integrated threaded pole mount supports up to 2 KLA12 enclosures
- Weight: 100 lbs.

The QSC KLA181 line array subwoofer offers serious low-end power for any performance. Add it to your live rig and enjoy the show.
WARNING: Cancer and Reproductive Harm - www.p65Warnings.ca.gov.
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- Pole Socket Size: M20 threaded
Dimensions and Weight in Packaging
Shipping Weight: 116 lbs
Shipping Dimensions: 31 x 28 x 24 in
Manufacturer Part Number (MPN): FG-001237-01

For support or warranty questions, please contact the manufacturer:
Phone: (800) 772-2834
Web: http://qsc.com/support

QSC KLA181 Active Line Array Subwoofer

The QSC KLA181 Subwoofer features the DEEP(tm) DSP algorithm, GuardRail(tm), Auto Standby, balanced line-level XLR input with an XLR "Thru" connector, Attenuation Control and LED indicators. The KLA181 subwoofer also includes a polarity switch for low frequency directivity control.

For maximum deployment flexibility, KLA loudspeakers can be either ground deployed or flown. As a ground stack, up to two KLA12 enclosures can be mounted over the KLA181 or the KW181 subwoofer via a threaded pole socket, or without a sub using an appropriately rated loudspeaker stand.

KLA12 enclosures also feature the Tilt-Direct(tm) 35mm pole socket allowing the loudspeaker to be aimed downward 9* for the best audience coverage.

Arrays of up to 480 lbs (218 kg) (with a maximum five KLA12 and two KLA181 enclosures) can be flown via the included M10 fittings or the optional KLA AF12 array frame.

KLA Series

The KLA Series brings the power and sophistication of a line array system into an easy-to-use product significantly redefining the line array product category. With its simple Lift, Click and Play approach, KLA can be deployed in a fraction of the time required by comparable line array products.

This fixed arcuate, active line array system is ideal for a wide range of portable and permanently installed applications ranging from live entertainment to houses of worship or other venues where a line array system is desired.

KLA Power Module

The KLA Series is comprised of two models, the KLA12 12-inch, 2-way loudspeaker and the KLA181 18-inch subwoofer. The KLA12 features a highly efficient 500 watt by 500 watt power amp. KLA12 Power Module module and the KLA181 offers the same highly efficient power amp module in a 1,000 watt configuration. This efficient design enables up to five KLA models (any combination of KLA12 and KLA181) to be driven off of a single 15 amp, 120 volt electrical circuit.

KLA loudspeakers incorporate QSC's DEEP DSP algorithm - providing extended bass response by actively managing potentially damaging low-frequency transients - and GuardRail circuitry protection which prevents the amplifier module from unnatural and destructive clipping.

As an energy saving feature, the Auto Standby mode automatically engages after five minutes of inactivity but upon resumption of audio signal, the power module on the KLA will awaken instantly for immediate output.

In an installed application, multiple KLA Series loudspeakers can be "daisy-chained" for total gain control from a single remote pot wired to the on-board Phoenix-style connector. Additional power module characteristics on KLA include a balanced, line-level XLR input in parallel with an XLR "Thru" connector, PowerCon(tm) In and Thru connectors, Attenuation Control and LED indicators for Signal, Limit, Power and Standby status.


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    $224.16 with zZounds
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