QSC KSub Powered Subwoofer

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A powerful sub with a modest footprint for crowded stages.

The QSC KSub Powered Subwoofer is the ideal supplement to QSC K Series 2-way speakers for live reinforcement of bass instruments and drums, or higher-level playback of recorded music. Its 1000W Class-D power module never fails to deliver. The KSub subwoofer's M20 threaded pole socket (pole included) provides a secure, wobble-free method of elevating a mid-high speaker over the subwoofer. The KSub subwoofer's compact footprint won't take over the stage, dance floor, or seating area of smaller venues. A pair of high-power 12" speakers in an optimized band-pass enclosure will handle everything the 1,000-watt power module can give them. Compact in size, the QSC KSub has ergonomically designed handles and 3" noise-free casters ease load-in and load-out.

Speaker configuration
  • Active/passive: Active
  • Type: Subwoofer
  • LF driver: Dual 12" bandpass
  • MF driver: N/A
  • HF driver: N/A
  • Power
  • Amplifier class: D
  • Wattage: 1000W continuous
  • Mixer/preamp: No
  • Audio
  • Frequency response: 44Hz - 148Hz
  • Coverage pattern: N/A
  • Max SPL: 130 dB
  • Inputs
  • XLR: 2 XLR/TRS
  • TRS:
  • TS:
  • RCA: 2
  • Output/thru
  • XLR: 2 XLR/TRS
  • TRS:
  • TS:
  • RCA: 2
  • Enclosure
  • Cabinet material: ABS
  • Width: 14"
  • Height: 26"
  • Depth: 28"

Order now & get this low-profile, 1,000W subwoofer today.


KSub Powered Subwoofer Specifications:

  • 1,000W Class D power module
    Professional appearance and rugged construction
    GuardRail technology discreetly protects the system from damaging overload
    Locking IEC power cable
    XLR and 1/4" connectors
    Phone Mic/Line and Line inputs with Loop-thru connectors and independent level controls.
    Phono (RCA) inputs
    Front mounted LED may be switched off or indicate "LIMIT" or AC Power On
    High-Pass Filter
    Dual 12" band-pass for compact size, efficiency and high-power handling
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QSCKSub Powered Subwoofer

(based on 1 review)

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Reviewed by 1 customer

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(7 of 7 customers found this review helpful)


working band's dream sub!


from Anaheim, CA

Comments about QSC KSub Powered Subwoofer:

The K-Sub is the most compact AND powerful sub I've ever used. My band, 7k, recently used them on a 7-week US Tour and used them in every kind of venue imaginable. We also loaded them in and out of every one of those places! They are truly well-designed, reliable, and sound fantastic. In addition to live vocals and instruments, we also ran full-range loops through them and we never ran out of headroom ... ever! For even more detail, please watch my YouTube videos.

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