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KRK S8.4 Active 8″ Studio Subwoofer

Building on KRK’s legacy of sonic accuracy and performance, the new KRK S8.4, S10.4, and S12.4 subwoofers deliver tight, accurate, and defined bass, while their highly efficient Class D power amplifiers dramatically increase transient response, control, and punch. A wealth of connectivity options means you can hook up to practically anything without adapter hassles, and a four-position crossover frequency selection switch makes it easy to adjust the subwoofer setting to optimally match your existing monitors.

Shipping & Delivery

  • Courier delivery

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2-3 Days

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  • DHL Courier delivery

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1-3 Days

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  • Warranty 1 year
  • Free 30-Day returns

Description

Refinements in the latest generation of KRK subwoofers include modestly improved low frequency extension, improved porting for much better low frequency phase response and less port noise, a more durable inverted dustcap, optional removable grilles, redesigned cabinets with lower height profiles and less depth than their predecessors for improved placement flexibility, and a timeless design with a more professional aesthetic.

Pairing a KRK subwoofer with KRK or other studio monitors delivers an optimised listening and mixing experience with extended low end, while the exclusive bypass control feature provides full-range audio to your monitors at the click of an (optional) footswitch without having to move out of the monitoring sweet spot to turn off the subwoofer. This allows for instant comparisons with and without the subwoofer’s contributions to the sound. KRK’s new subwoofers don’t just deliver precise bass and a rich feature set; they’re the next dimension in subwoofer performance.

Powerful Class-D Amplification

The KRK S8.4 features a 109W Class-D amplifier that delivers tight, punchy bass with enhanced transient response. This efficient design ensures precise low-end control while minimizing heat buildup for reliable performance.

Flexible Connectivity

Equipped with XLR, 1/4″ TRS, and RCA inputs/outputs, the S8.4 integrates seamlessly into any studio setup. The four-position selectable crossover lets you tailor the subwoofer’s response to match your monitors for a balanced mix.

Main Features

  • 8″ glass aramid composite woofer
  • Bass extension to 30 Hz with a max SPL of 112 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
  • Ground-lift switch prevents ground loops

KRK S8.4 Active 8" Studio Subwoofer

More Than Sound – It’s an Experience. Audio Shop Australia.

About brand
KRK is a leading brand in studio monitors and audio gear, trusted by music professionals worldwide. Famous for its distinctive yellow-cone speakers, KRK delivers precise, clear sound—perfect for mixing, mastering, and critical listening. At Audio Shop Australia, we offer a wide range of KRK studio monitors and accessories to help elevate your sound production. Whether you're building a home setup or running a professional studio, KRK provides reliability, innovation, and studio-grade performance you can count on.
Tech Specs
  • Configuration: Front Loaded, Vented Subwoofer

  • System Type: Active Subwoofer

  • Low-Frequency Transducer: 8″ Glass Aramid Composite Woofer

  • Frequency Response: 34.5Hz – 133Hz

  • Max Peak SPL: 112.8 dB

  • Amplifier: Class D

  • Power Output (Continuous): 109 Watts @ 1% THD+N @ 46Hz

  • Signal to Noise Ratio: 92 dB

  • Amplifier Distortion (THD + N): ≤ 0.1% @-3dB Of Max Power Output 35Hz-133Hz

  • Input Impedance: 9.4 KΩ Balanced, 9.2 KΩ Unbalanced

  • Ground Lift: On/Off

  • HPF Bypass: With Footswitch Only

  • Footswitch: Optional

  • Indicators: Power/Standby

  • Input Connectors: XLR L/R, 1/4″ TRS L/R, RCA L/R, 1/4″ Footswitch

  • LFE Input: N/A

  • Output Connectors: XLR L/R, 1/4″ TRS L/R, RCA L/R

  • AC Power Input: 100VAC-240VAC

  • Enclosure: 15 mm and 18 mm Reinforced MDF

  • Finish: Black Vinyl Wrap, Baffle – Black Paint

  • Hardware: EVA Isolation Pad

  • Dimensions (H x W x D): (H x W x D): 11″ (279 mm) x 16.125″ (410 mm) x 11.5″ (292 mm)

  • Weight: 26.5 lb. (12 kg.)

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