Continue Shopping View Cart
Markertek - The Future of Broadcast Supply

Call 800-522-2025
M-F 8:30am - 7pm EST

Free Shipping Promo Box

FREE SHIPPING No Minimum Order!

SHOP MARKERTEK EVERYDAY for all of your needs. Free shipping on almost every order placed on our website.
Special order & oversized freight intensive items ship at an additional cost. Continental US orders only.

Secure LoginClose X

Returning Markertek Customers

New Markertek Customers

Why Create an Account?

Creating a Markertek account now will save you time on future orders. You'll have full access to your order history and a personalized shopping experience.

QSC KLA181-BK 18 Inch Ported 1000W Subwoofer - Black
  • QSC KLA181-BK 18 Inch Ported 1000W Subwoofer - Black
  • QSC KLA181-BK 18 Inch Ported 1000W Subwoofer - Black
  • QSC KLA181-BK 18 Inch Ported 1000W Subwoofer - Black
Questions? Ask a Markertek Expert:
800-522-2025 Email

QSC KLA181-BK 18 Inch Ported 1000W Subwoofer - Black

Manufacturer: QSC

Item #: QSC-KLA181-BK   •   MFG #: KLA181-BK


List Price:$2,650.00
Our Price:$2,149.99

no free ship
Availability: Usually ships in 3-10 business days
This item is currently out of stock and will ship the minute we receive it – typically 3-10 business days. Need it sooner? Expedited delivery options may be available. Email [email protected] or call customer service at 800-522-2025 and we’ll make it happen.
  • Shipped truck freight.
  • Special Order Item: non-cancelable, non-returnable, non-refundable.



The black KLA181 1,000-Watt Subwoofer from QSC is designed to be used in the KLA series fixed line array system. It can reproduce frequencies down to 33Hz and produces up to 1,000-watts of output. The KLA181 has an integrated threaded pole-cup receptacle that allows you to pole-mount up to 2 KLA12 speakers on top of it for array setup. Its M10 fittings allow it to alternatively be suspension mounted.

  • Features

    • 1,000W Output
    • 18" Subwoofer
    • 135dB SPL
    • Handles Frequencies Down to 33Hz
    • Threaded Pole-Cup Receptacle
  • Specifications

    • Configuration 18" (457 mm) ported subwoofer
    • Transducer 18" (457 mm) cone transducer
    • Frequency Response 38 Hz, -6 dB
    • Frequency Range 33 Hz, -10 dB
    • Maximum SPL 135 dB @ 1 m
    • Power Output 1,000 W power module
    • Input Impedance XLR: 40k Ω balanced, 20k Ω unbalanced
    • Controls Power, attenuation, LF Mode (normal/DEEP), polarity (normal/reverse), front LED (power, limit, off)
    • Connectors 1x balanced XLRF line level in
    • 1x balanced XLRM line level out
    • 1x locking powerCON power connector AC in
    • 1x locking powerCON power connector AC out
    • Cooling On demand, 1.9" (50 mm) fan
    • Protection Amp: Thermal limiting, output overcurrent, over-temperature muting, GuardRail
    • Transducer: Thermal limiting, excursion limiting
    • AC Power Input: Universal power supply 100 - 240 VAC, 50 - 60 Hz
    • Consumption: 100 VAC, 2.3 A 120 VAC, 2.01 A 230 VAC, 1.13 A, 1/8 power
    • Dimensions (HxWxD) 21.6 x 23.4 x 25.7" (547 x 594 x 653 mm)
    • Weight 104 lb (47.2 kg)

Add Accessories for your KLA181-BK:

Please fill out the information below
Email Address*