Item # 485945 | Customer Ratings: ( 5 Based on 21 reviews)

Print this page

  1. Select the information you'd like to print out.
  2. Cancel
QSC KW181 Powered Sub Woofer 18" 1000w
Use Add to Cart below to have it shipped to you, or to a store near you.
  • Store
  • Availability
Guaranteed Lowest Price
Pickup In Store

An 18" sub with 1000 Class D continuous output, and extended bass in a lighter birch enclosure.

Building on the success of QSC's K Series, the KW181 subwoofer, like the rest of QSC's KW active loudspeakers, represents QSC's next evolutionary step in wood enclosure loudspeakers. The system engineers created the KW series to feature all the groundbreaking electronic attributes of the popular K Series while at the same time designing a product that is both smaller and significantly lighter than previous wood enclosure models.

High Output
Like it K series predecessors, the QSC KW181 speaker features a QSC designed, 1000W (2 x 500) Class D power module. The loudspeaker is also fitted with an 18" cone transducer of the same high-quality design.

Extensive signal processing is employed throughout the QSC loudspeaker, providing levels of sonic clarity and total output that defy all expectations for a speaker in this category:
â?¢Intrinsic Correction: first featured in QSC's high-end line array products, it maps 65-75 spatially-averaged measurements to IIR and FIR filters that actively adjust time, frequency, and amplitude response to a maximally flat bandpass target. The result is an active speaker that behaves equally well across the entire sound field
â?¢DEEP and excursion limiting allow for extended low-frequency response by actively managing low-frequency transients without degradation of the underlying signal or adjacent frequencies
â?¢GuardRail protection, first introduced on QSC's GX Series amplifiers protects both the amplifier module and your performance from unnatural and destructive clipping

The QSC KW181 subwoofer speaker features dual balanced female XLR / 1/4" line levelâ??input, dual balanced male XLR full-range line leave out, remote gain control via a potentiometer (sold separately), and a locking IEC power connector.

The QSC KW181 speaker has an LF switch which can be set to NORM, DEEP for additional bass extension. The rear panel LED switch can be set to POWER, illuminating the front-mounted LED when the QSC speaker is powered on, OFF for applications where it is not desirable to illuminate the front LED, or LIMIT which indicates to the system operator that the clip limiter circuit has been engaged during operation.

Premium-grade materials:
The QSC KW181 subwoofer, like all its KW Series brethren, is designed to withstand the rigors of professional use. Advanced construction processes, premium-grade Baltic birch cabinetry, ergonomic, cast aluminum handles, low-noise casters, and a highly protective steel grille provide for ease of transport and long-term durability. The QSC loudspeaker's integrated M10 suspension points allow for flown applications and a threaded pole receptacle provides for a positive, wobble-free connection to a threaded speaker pole (included).

QSC KW181 Powered Sub Woofer 18" 1000w Features:

  • K Series performance in a more lightweight design
    1000-Watt Class D power module (2 x 500W)
    Extensive DSP featuring DEEP and Intrinsic Correction enhances system performance

    Rugged, texture-painted birch speaker enclosure
    4-position Mic/Line gain
    Tour-grade, 16-gauge steel grilles
    Comfortable ergonomic handles
    35mm pole sockets with Tilt-Direct
    M10 rigging points for suspended installation

QSC KW181 Powered Sub Woofer 18" 1000w Specifications:

  • Configuration: 18" subwoofer
    Transducer: 18" cone transducer
    Frequency response: (-6dB) 43Hz - 97kHz
    Frequency range: (-10dB) 39Hz - 145Hz
    Maximum SPL: (1 meter) 132dB peak

    Power output: 1000W Class D continuous
    Input impedance (ohms):XLR/1/4": 38k balanced / 19k unbalanced
    Controls: Power, Gain, LF Mode (Normal/DEEP), Polarity (Normal/Reverse), Front LED (On/Off/Limit)
    Indicators: Power, Signal, Standby, Limit
    Connectors: Dual balanced female XLR/1/4" line level input, Dual Balanced male XLR full range line level out, Remote gain control, Locking IEC power connector
    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 - 240VAC, 50 - 60Hz
    AC power consumption (1/8 Power): 100 VAC, 2.3 A, 120 VAC, 2.01 A, 230 VAC, 1.13 A

    Speaker Enclosure:
    Material: 15mm painted birch plywood
    Finish:Black textured paint
    Grille:Black powder coated 16 gauge steel
    Dimensions (HxWxD): 20.1" x 23.4" x 29.9" with casters, 510mm x 595mm x 761mm with casters
    Weight (Net): 88lb. (40kg)

Product Reviews
(Based on 21 reviews)
Sort reviews:
Viewing Reviews 1 - 3 of 21 |
  • QSC Rocks, this bass almost demolished my house

    As reviewed by Marco Naranjo on 9/21/2011

    I'm a mobile DJ, right now I'm building my new active PA system.. I have been using a passive set of two 18' subs and two 15' speakers they have a great sound, I use QSC amplifiers, crossover and EQ to move them and the sound power and quality is just perfect... having said that, I was so skeptical that the active system was going to be equal or better than my system, I was soooo wrong, so far I have bought one EV live x 15' and this outstanding QSC KW181, this combination is working just perfectly. The bass is extremely powerful, the sound quality is even better than my old ones, when I turned this on in my house, the roof, the windows, the walls the complete house was shaking, actually I was trying to make it peak and I couldn't, maybe when I take to a ballroom. Botton line, I'm going to buy my second one, QSC is quality and great sound, you can't go wrong with this one.

    4 of 4 people found this review helpful.
    Was this review helpful?
  • amazing

    As reviewed by Paul Russell on 4/11/2011

    I bought a Harbinger powered 18 inch sub and it worked great used it for about 6 months and had many compliments etc. That was until I purchased the QSC KW181 one word WOW!! I already use the k8's and k12's 5 nights a week. The sub is incredible, clear hard hitting bass.Seven straight hours right out of the box with zero problems. I was so used to having to let the harbinger cool down and back way out of it to keep it from clipping, I was blown away with the quality of the cabinet, the casters are fixed to the rear and heavy duty they will not rattle like some and it runs cool.Also It's low profile design allows it to fit under your table perfectly.I plan on adding another one to my setup very soon. The same crowd that was at the bar the week prior asked me what in the heck did you do? The bass is incredible. I just smiled and replied upgrade which made my night.

    3 of 3 people found this review helpful.
    Was this review helpful?
  • Best sub i've ever heard.

    As reviewed by Simone on 4/9/2011

    Aright basically, i bought this sub before even hearing it, i just read the reviews, and was amazed by what everyone was saying. i just used it for the first time last week. It was a cotillion, and there were 2 bands with the dj (me). I did a sound check, and the band was amazed by how much bass this sucker gives out, that they ran their equipment, through my sound system. I DEFINITELY RECOMMEND BUYING THIS. YOU WILL NOT REGRET IT.

    3 of 3 people found this review helpful.
    Was this review helpful?
Questions about the KW181 Powered Sub Woofer 18" 1000w (485945)

PO Box 4769
Westlake Village, CA 91359
Order #: (if applicable)  * Denotes Required Field
*First Name:
*Last Name:
Click to add file attachment
File Upload 5mb limit