KRK S8 Generation 4 8" Active Studio Subwoofer with 1.5" Voice Coil


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Building on KRK's legacy of sonic accuracy and performance, the new KRK S8.4 subwoofer delivers tight, accurate, and defined bass, while the highly efficient Class D power amplifier dramatically increases 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.

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 optimized 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.

KRK S8 Generation 4 Subwoofer Features:

  • 8" glass aramid composite woofer.
  • Bass extension to 30Hz 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.
  • All-steel grill and 15 mm reinforced MDF enclosure provide maximum strength and protection.
  • Ground lift switch prevents ground loops.

KRK S8.4 Product Specifications:
ConfigurationFront-Loaded, Vented Subwoofer
System TypeActive Subwoofer
Transducers8" Glass Aramid Composite Woofer,
Frequency Response (+/- 3dB)  34.5 Hz - 133 Hz
Frequency Range (-10dB)29 Hz - 205 Hz
Max Peak Spl113 dB SPL
Amplifier Power Rating109 W (1% THD+N)
Input Impedance9.4 k OHMS Balanced / 9.2 k OHMS Unbalanced
ConnectorsInput: XLR Left/Right, 1/4" TRS Left/Right, RCA Left/Right, 1/4" Footswitch
Output: XLR Left/Right, 1/4" TRS Left/Right, RCA Left/Right
ControlsVolume, Four-Position Crossover LPF/HPF Control, Input Sensitivity
(Standard And High), Polarity (0 OR 180 Degrees), Standby (On/Off),
Ground Lift, Sub And HPF Bypass (With Optional Footswitch Only)
Enclosure Construction15 mm / 18 mm Reinforced MDF
FinishBlack Vinyl Wrap, Baffle - Black Paint
Grille (Optional)Perforated Steel
HardwareEva Isolation Pad
Dimensions (H X W X D)11" (279 mm) x
16.125" (410 mm) x
11.5" (292 mm)
Weight26.5 lb. (12 kg.)

Each S8.4 Retail Box Includes:
(1) KRK S8 Generation 4 8" Active Studio Subwoofer with 1.5" Voice Coil

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