Item #: QSC KLA181 LIST

QSC KLA181 18 Inch 1000 Watt Active Line Array System Subwoofer

Shop QSC KLA181 18 Inch 1000 Watt Active Line Array System Subwoofer from AMS with 0% Interest Payment Plans and Free Shipping.
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Product Description

Providing extended bass response with the DEEP DSP algorithm, the QSC KLA181 Active Subwoofer offers GuardRail circuitry protection, Auto Standby, balanced line-level XLR input with an XLR Thru connectors. QSC's KLA181 subwoofer also includes Attenuation Control, LED indicators, and a polarity switch for low frequency directivity control. QSC's KLA Loudspeakers and Bass Enclosures are a must have for the ultimate aural experience in both touring and installed setups.

QSC KLA181 Active Subwoofer Features
  • 1,000 watt power module
  • 18 inch vented subwoofer
  • 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 two KLA12 enclosures

warning WARNING: Cancer and Reproductive Harm -
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Helpful Info about the Manufacturer
Phone:  800-772-2834 Warranty:  3 Years; 1 Year on TouchMix; CP Series warranty is 1 year +5 upon registration; B-Stock is 1 (one) Year only!

Product Specifications

QSC KLA181 Active Subwoofer Specifications
  • Configuration: 18 inch subwoofer
  • Low Frequency Transducers: 18 inch cone transducer
  • Frequency Response (-6 dB): 38 Hz
  • Frequency Range (-10 dB): 33 Hz
  • Maximum SPL (1 meter): 135 dB peak
  • Power Output: 1000 W Class D continuous
  • Input Impedance (ohms): XLR: 40k balanced / 20k unbalanced
  • Controls: Power, Attenuation, LF Mode (Normal/DEEP), Polarity (Normal/Reverse), Front LED (Pwr/Limit/Off)
  • Indicators: Power, Signal, Standby, Limit
  • Connectors: Balanced female XLR line level input, Balanced male XLR full range line level out, Remote attenuation control, Locking powerCON power connector AC In, Locking powerCON power connector AC Out
  • Cooling: On demand, 50 mm variable speed fan
  • Amplifier Protection: Thermal limiting, output overcurrent, overtemperature muting, GuardRail
  • Transducer Protection: Thermal limiting, excursion limiting
  • AC Power Input: Universal power supply 100 - 240 VAC, 50 - 60 Hz
  • AC Power Consumption (1/8 Power):
    • 100 VAC, 2.3 A
    • 120 VAC, 2.01 A
    • 230 VAC, 1.13 A
  • Material: Painted birch plywood
  • Finish: Black or White textured paint
  • Grille: Black or White powder coated 16 gauge steel
  • Dimensions (HxWxD): 21.6 x 23.1 x 25.7 inches (547mm x 586mm x 633mm)
  • Weight: 100 lb (45.3 kg)
  • Available Accessories: KW181 POLE

Customer Reviews

Review: Wayne Ranger Submitted: 10/30/2015

Product Rating5 out of 5 stars.


I have a night club with four double 18 playing base/bottom. 2 power 18 played much better wow??????
Product Rating

Product Review

This product has the best sub base out there no amp racks just plug and go,30 min ago my friend brought 2 of them into my club and plugged them up I heard the difference right away love got to close my eyes and get a pair of the .........


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