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KRK S12.4 12inch Pro Powered Studio Subwoofer

Manufacturer: KRK
SKU: KRK-S12.4
The S12.4 powered studio subwoofer builds upon KRK’s legacy for sonic accuracy and stellar performance.
Availability: Backorder - Contact for ETA
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The custom-made, Kevlar® woofer delivers ultra-tight, defined bass, while the Class-D power amplifier dramatically increases transient response, control, and punch. The four-position selectable crossover lets you adjust the subwoofer setting easily to your existing monitors.

Pairing the S12.4 with KRK or another studio monitor delivers an optimized listening and mixing experience with extended low end, while the exclusive bypass-control feature provides full range audio to the monitors without switching off the subwoofer.

The powerful S12.4 subwoofer doesn’t just deliver precise, ultra-low bass and a rich feature set: it’s the next dimension in subwoofer performance.


  • 12" Kevlar® Composite Woofer
  • Bass extension to 26Hz with a max SPL of 119 dB
  • Footswitch control enables/disables sub and crossover filter (footswitch not included)
  • Curved design with front-firing bass port for placement flexibility
  • Powerful, lightweight Class D amplification
  • Optimized four-position crossover control
  • Universal connectivity: XLR, 1/4" TRS, and RCA inputs and outputs
  • Polarity and input sensitivity controls
  • All-steel grill and 18 mm reinforced MDF enclosure provide maximum strength and protection
  • Ground lift switch prevents ground loops


  • Configuration: Front Loaded, Vented Subwoofer
  • System Type: Active Subwoofer
  • Low-Frequency: 12" Woven Kevlar® Woofer
  • Frequency Response: 32Hz - 139Hz
  • Max Peak SPL: 119.9 dB
  • Amplifier: Class D
  • Power Output (Continous): 220 Watts @ 1% THD+N @ 44Hz
  • Signal to Noise Ratio: 92 dB
  • Amplifier Distortion (THD + N): ≤ 0.3% @-3dB Of Max Power Output 29Hz-97Hz
  • Input Impedance: 9.4 KΩ Balanced, 9.2 KΩ Unbalanced
  • Ground Lift: On/Off
  • Low Pass Frequency: 26Hz-130Hz
  • HPF Bypass: With Footswitch Only
  • Footswitch: Optional
  • Phase: 0 or 180 Degrees
  • System Volume: -30 dB to +6 dB
  • Indicators: Power/Standby, Sub On/Mute, HPF Bypass
  • Input Connectors: XLR L/R, 1/4" TRS L/R, RCA L/R, 1/4" Footswitch
  • LFE Input: Balanced TRS
  • Output Connectors: XLR L/R, 1/4" TRS L/R, RCA L/R
  • AC Power Input: Selectable 110V-120V / 220V0240V
  • Enclosure: 18mm Reinforced MDF
  • Finish: Black Vinyl Wrap
  • Grill: Steel Perf
  • Dimensions (H x W x D): 18.11" (460mm) X 15.94" (405mm) X 22.64" (575mm)
  • Weight: 66.5 lb. (30.1 kg)

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