The QSC KLA181 Line Array Subwoofer is an 18" active subwoofer and is designed to compliment QSC's KLA12 2-Way Line Array Loud Speaker. The KLA 181 features an energy efficient 1000 watt power module. A polarity switch controls low frequency directivity and its pole receptacle is capable of mounting up to 2 KLA12 2-Way Line Array Loud Speakers.

QSC's DEEP DSP algorithm provides extended bass by actively managing low-frequency transients. GuardRail protection circuitry prevents the amplifier module from unnatural and destructive clipping. An auto-standby mode will auto-engage after 5 minutes of inactivity to save energy. XLR and PowerCon input and thru connectors provide connection versatility, while a Phoenix connector allows daisy-chaining.

1,000 watt power module

18" vented subwoofer

High acoustic output (135dB SPL peak)

Frequency range down to 33Hz (-10dB)

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

KLA181-WH

$2,999.99 Regular Price
$2,399.99Sale Price
  • SPECIFICATIONS KLA181
    Configuration 18-inch subwoofer
    Transducers
    High Frequency
    Low Frequency


    18-inch cone transducer
    Frequency Response (-6 dB) 38 Hz
    Frequency Range (-10 dB) 33 Hz
    Nominal Coverage -
    Maximum SPL (1 meter) 135 dB peak
    Amplifiers
    Power Output 1000 W Class D continuous
    Input Impedance XLR: 40 kΩ balanced / 20 kΩ 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 to 60 Hz
    AC Power Consumption
    (1/8 Power)
    100 VAC, 2.3 A
    120 VAC, 2.01 A
    230 VAC, 1.13 A
    Enclosure
    Material Painted birch plywood
    Finish Black or white textured paint
    Grille Black or white powder coated 16 gauge steel
    Dimensions (HWD) inches 30 x 28 x 24
    Dimensions (HWD) mm 760 x 710 x 610
    Net Weight 47.2 kg / 104 lb
    Shipping Weight 54.4 kg / 119.9 lb
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