QSC KW181 1000W 18" Active Subwoofer

Model #KW181

QSC Warranty
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Amazon logo $1,499.99 $0.00 $0.00 $1,499.99
Adorama $1,499.99 $0.00 $0.00 $1,499.99
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Specifications

Packaging Info

Package Weight 114.0 lb
Box Dimensions (LxWxH) 35.0 x 23.0 x 23.0"

General Information

Amplifier Class-D, 1000W Continuous, 2000W Peak
Maximum Sound Pressure Level (SPL) 135dB, Peak
Nominal Sensitivity Not Specified by Manufacturer
Input Impedance 38 kOhms Balanced, 19 kOhms Unbalanced
Crossover Not Specified by Manufacturer
Low Frequency Driver 18" Cone Woofer
Enclosure Material 15mm Birch Plywood, Black Textured Paint Finish, Black Powder Coated 16-Gauge Steel Grille
Controls Power Gain LF Mode (Norm/DEEP) Polarity (Normal/Reverse) Front LED (On/Off/Limit)
Active or Passive Active
Indicators PowerSignalStandbyLimit
Cooling On Demand, 50mm Variable Speed Fan
Protection Amplifier: Thermal Limiting, Output Overcurrent, Overtemperature Muting, GuardRail Transducer: Thermal Limiting, Excursion Limiting
Power 100-240VAC, 50/60Hz Universal Power Supply
Consumption 100VAC, 2.3A 120VAC, 2.01A 230VAC, 1.13A
Dimensions (HxWxD) 20.1 x 23.4 x 29.9" (510 x 595 x 761mm) (With Casters)
Weight 88 lbs (40kg)
Connectors 2 x XLR/TRS Mic/Line Combo Inputs 2 x XLR Line Outputs 1 x Phoenix Remote Connector 1 x Locking Power Connector
Frequency Response 40-112Hz (-6dB) 35-129Hz (-10dB)
User Reviews
B h photo.34921152
11 November 2012
10/10

Was looking to make a second larger venue DJ setup with some older 15 powered tops I had. The difference over my non-powered setup (18 and 15 sub/sat) was so noticeable that both kids and adults commented on how pounding the bass was.

Amazon.32817384
21 May 2013
10/10

We just used two of these side-by-side along with four K12's to support a band in an airplane hangar with 1200 people. The band was CRAZY impressed. I stood 200 feet away, and could actually feel my pants vibrating slightly.

B h photo.34921152
16 September 2011
10/10

I've been using a pair of these sub for almost 2 months now. I love them. I use them for a band with an audience of 300 - 400. The kick with an Audix D6 mic sounds awesome through these subs.

Amazon.32817384
9 December 2013
10/10

Just replaced an old Mackie that blew out. Love this QSC. Clean articulate bass. I use it in the house audio system at a community center - about 2600 square feet, with 14' ceilings. It is used every day.

Amazon.32817384
19 May 2012
10/10

I have owned this sub for 2 years. I use it about 15 times a year for outdoor live bands. They send plenty of bass, and match well with my QSC HPR153 3-way tops. This sub thumps. It came with a threaded pole for the top, so that a smaller PA speaker can be mounted above.

Amazon.32817384
6 September 2014
10/10

wow!! thats all i can say about this sub.

Amazon.32817384
25 June 2014
10/10

A DJ "MUST HAVE"!! If you are a DJ just starting out, resist the temptation to buy one of those $700 active subs out there. Also don't buy the K-SUB for DJ use- it is not enough (learned that the hard way). After approx.

B h photo.34921152
24 September 2013
10/10

I bought the QSC KW181 subs for my mobile DJ system. They are perfect for use in larger venues and take up little space. They are very easy to set up and the casters make it easy to transport. The sound is clean, warm, tight, deep and loud.

Amazon.32817384
8 April 2013
10/10

I have come to love these subs. I rely on them in my live sound business rvalivesound.com and they have been putting out the bass since day one without missing a beat. I can't imagine working with anything less at this point.

Product Highlights
  • 18" Woofer
  • 1000W Class-D Amplifier
  • XLR/TRS Combo Inputs and XLR Outputs
  • Phoenix Remote Connector
  • Integrated DSP with DEEP
  • Intrinsic Correction and GuardRail
  • Pole Socket and Low-Noise Casters
In The Box
  • QSC KW181 1000W 18" Active Subwoofer
  • Power Cord
  • Threaded Pole
  • 3-Year Limited Warranty (Extends to 6 Years with Product Registration)
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