QSC KSub Active PA Subwoofer

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1,199.00 RRP 1,367.00 (including VAT @ 23%)

12 In StockDelivery Information

Item in stock at our Distribution Centre in York

We currently have this item in stock at our Distribution Centre in York, ready for dispatch.

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Can be delivered to you on: 1st November 2016
FREE Delivery available.

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30 day money back guarantee included

30 day money back guarantee included

Once the product is delivered, you have 30 days to decide that you definitely want to keep it. If you decide it is not suitable for any reason, you can return it back to us for replacement or full refund, including standard delivery charges.

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Optional: 5 year warranty: €90.50
(Includes 90 day money back guarantee)


The product price includes a one year warranty and 30 day money back guarantee.

However, the Gear4music extended warranty scheme provides an enhanced service, and is designed to offer a higher level of protection than many 'free' warranties offered by some retailers and manufacturers.

The highlights of this enhanced warranty service are:

  • Warranty is extended to 5 years from the date of delivery.
  • Our Money Back guarantee is extended from 30 days to 90 days (terms apply after 30 days)
  • Collection and delivery costs are included for the first two years
  • Claim 50% cash back on the cost of the policy after 5 years if it has not been used!
  • Warranty is transferable if the item is re-sold
  • Loan or replacement equipment will be provided if the product isn't repaired within 30 days
  • If an item can not be repaired, a similar alternative product or cash discount (as defined in this policy) will be offered
  • The policy can be cancelled within 30 days, and at any time after that for a pro-rata discount

Please note that this extended warranty is currently only available on products sold within the EU or EEA, and is subject to the terms and conditions as detailed on the extended warranty certificate provided.

For customers in outlying areas of the country, the price of the Extended Warranty may be marginally higher, due to the potential for higher collection and redelivery transport costs.

This enhanced warranty is in addition to the standard Gear4music and manufacturer warranty policies, and the Gear4music terms and conditions of trade. No statement or condition of sale contained within these terms affects or restricts your statutory rights as defined under the Consumer Contracts Regulation 2014.

Product Ref: 14096

  • Dual 12" Active Subwoofer
  • Maximum SPL 130 dB Peak
  • 1000 Watt Continuous Class D Power
  • Rugged Birch Plywood Enclosure
  • Comfortable Ergonomic Handles

QSC KSub Active PA Subwoofer


The QSC KSub features dual 12" subwoofer drivers with a maximum SPL of 130 dB peak, great for small-medium sized venues. Weighing 33.6kg, the speakers in the K Series are very light compared to similar competitors, but deliver excellent sound quality, making them perfect for situations where rigging/derigging or transportation is a big consideration. Multiple mounting and suspension options allow for a wide range of live and installed applications, and multiple input options make the KSub a very flexible PA subwoofer.

Product Ref: 14096

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Full Description

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High Quality Construction

The QSC KSub offers unparalleled performance with its dual 12" subwoofer drivers. Premium-grade materials and advanced construction processes have been used, as well as extensive DSP processing is employed throughout, providing levels of sonic clarity and total output that defy the system's size and weight.

Flexible Connectivity

The QSC KSub offers flexible connectivity options with dual balanced female XLR 1/4" line level input, dual balanced male XLR full range line level out, remote gain control and locking IEC power connector.

Rugged Housing

The KSub features a rugged birch plywood enclosure with a professional appearance that is at home in any application. The internal rigidity offers an additional measure of sonic clarity. Ease of transport and long term durability is ensured with the KSub's ergonomic aluminium handles and 4 casters.


  • Dual 12" subwoofer drivers
  • Maximum SPL 130 dB peak
  • Lightweight portable powered speaker with legendary QSC amplifier power and reliability
  • 1000-watt continuous Class D power modules in all models
  • Extensive DSP enhances system performance
  • Attractive and professional appearance
  • Comfortable ergonomic handles
  • Rugged birch plywood enclosure
  • Comfortable ergonomic handles
  • Threaded pole socket
  • Speaker mounting pole included (35 mm diameter, 26.4 in / 67 cm long, M20 thread)

Extensive DSP enhances system performance

  • DMT™ (Directivity Matched Transition) provides for matched LF and HF coverage across the entire listening area, eliminating unnatural "dead" or "hot" frequency zones.
  • Intrinsic Correction™, first featured in our high-end line-array products maps 65-75 spatially-averaged measurements to IIR and FIR filters that actively adjust time, frequency and amplitude response to a maximally flat band pass target. The result is a speaker that behaves equally well across the entire sound field.
  • 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.
  • GuardRail™ protection protects both the amplifier module and your performance from unnatural and destructive clipping.


  • Configuration: 4th-order bandpass
  • Transducers: Low-frequency: 2 × 12" cone transducers
  • Frequency Response (-6 dB): 48 Hz to 134 Hz
  • Frequency Range (-10 dB): 44 Hz to 148 Hz
  • Maximum SPL¹: 130 dB peak


  • Power Output²: 1000 W continuous Class D (2 x 500 W) / 2000 W peak
  • Input Impedance: XLR / ¼": 40 kΩ balanced / 20 kΩ 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/¼" 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 100-240 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


  • Material: Painted birch plywood
  • Finish: Black textured paint
  • Dimensions (HWD): 26" x 14" x 28.1" (including casters) / 665 mm x 356 mm x 714 mm
  • Weight (Net): 74 lb / 33.6 kg
  • Available Accessories: KSub cover