8s

Powered Studio Subwoofer

The 8s powered studio subwoofer builds upon KRK’s legacy for sonic accuracy in a compact form factor. The custom-voiced, glass-aramid woofer delivers 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 8s subwoofer with KRK or another studio monitor delivers an optimized mixing and listening experience with extended low end, while the exclusive bypass-control feature provides full range audio to the monitors without switching off the subwoofer. KRK’s 8s subwoofer doesn’t just deliver precise bass and a rich feature set: it’s the next dimension in subwoofer performance.

8s Front
8s Angle
8s Rear
8s Front preview
8s Angle preview
8s Rear preview

KRK Subwoofers

Bypass Footswitch

Mix with confidence. The bypass footswitch control allows you to quickly mute the sub and send full-range audio to your recording monitors.

Heavy Duty Enclosure

KRK Subwoofers feature reinforced MDF enclosures for maximum strength and durability. Never let a spilled beer or wild ninja roundhouse kick stop your mixing session again.

Front-firing Port

We engineered the front port to provide low frequency extension while reducing boundary coupling. The unique shape is optimized to avoid port turbulence.

Plays well with others

Dedicated crossover and optional High-pass filter bypass means that our subwoofers are the perfect compliment to powered monitors. From mixing and mastering to sound design, broadcast and production work - KRK has you covered.

8s 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

Reviews

A well-designed collection of subs to cover most studio needs, with some useful features, decent, low-distortion volume output and good low-frequency response.

KRK Subwoofers Compared 8S 8s 10S 10s 12S 12s 12sHO 12sHO
Configuration Front Loaded, Vented Subwoofer Front Loaded, Vented Subwoofer Front Loaded, Vented Subwoofer Front Loaded, Vented Subwoofer
System Type Active Subwoofer Active Subwoofer Active Subwoofer Active Subwoofer
Low-Frequency 8" Glass Aramid Composite Woofer 10" Glass Aramid Composite Woofer 12" Woven Kevlar Woofer 12" Woven Kevlar High Performance Woofer
Frequency Response 35Hz - 133Hz 34Hz - 130Hz 32Hz - 139Hz 29.2Hz - 160Hz (L/R inputs), 29.1Hz - 211Hz (LFE input)
Max Peak SPL 112.8 dB 117.2 dB 119.9 dB 123 dB
Amplifier Class D Class D Class D Class A/B
Power Output (Continous) 109 Watts @ 1% THD+N @ 46Hz 160 Watts @ 1% THD+N @ 44Hz 220 Watts @ 1% THD+N @ 44Hz 400 Watts @ 1% THD+N @ 100Hz
Signal to Noise Ratio 92 dB 92 dB 92 dB 92 dB
Amplifier Distortion (THD + N) ≤ 0.1% @-3dB Of Max Power Output 35Hz-133Hz ≤ 0.12% @-3dB Of Max Power Output 31Hz-110Hz ≤ 0.3% @-3dB Of Max Power Output 29Hz-97Hz ≤ 0.1% @-3dB Of Max Power Output 20Hz-200Hz
Input Impedance 9.4 KΩ Balanced, 9.2 KΩ Unbalanced 9.4 KΩ Balanced, 9.2 KΩ Unbalanced 9.4 KΩ Balanced, 9.2 KΩ Unbalanced 10 KΩ Balanced or Unbalanced
Ground Lift On/Off On/Off On/Off On/Off
Low Pass Frequency 30Hz-205Hz 28Hz-156Hz 26Hz-130Hz 60Hz-160Hz
HPF Bypass With Footswitch Only With Footswitch Only With Footswitch Only With Footswitch Only
Footswitch Optional Optional Optional Included
Phase 0 or 180 Degrees 0 or 180 Degrees 0 or 180 Degrees Rotatable Phase + Polarity Switch
System Volume -30 dB to +6 dB -30 dB to +6 dB -30 dB to +6 dB -30 dB to +6 dB
Indicators Power/Standby, Sub On/Mute, HPF Bypass Power/Standby, Sub On/Mute, HPF Bypass Power/Standby, Sub On/Mute, HPF Bypass Power, Protection, Limiter
Input Connectors XLR L/R, 1/4" TRS L/R, RCA L/R, 1/4" Footswitch XLR L/R, 1/4" TRS L/R, RCA L/R, 1/4" Footswitch XLR L/R, 1/4" TRS L/R, RCA L/R, 1/4" Footswitch Balanced XLR for Left & Right inputs
LFE Input N/A N/A Balanced TRS Balanced XLR
Output Connectors XLR L/R, 1/4" TRS L/R, RCA L/R XLR L/R, 1/4" TRS L/R, RCA L/R XLR L/R, 1/4" TRS L/R, RCA L/R Balanced XLR for Left & Right
AC Power Input 100VAC-240VAC 100VAC-240VAC Selectable 110V-120V / 220V0240V Selectable 110V-120V / 220V0240V
Enclosure 15mm Reinforced MDF 15mm Reinforced MDF 18mm Reinforced MDF 18mm & 36mm Reinforced MDF
Finish Black Vinyl Wrap Black Vinyl Wrap Black Vinyl Wrap Textured Paint
Grill Steel Perf Steel Perf Steel Perf N/A
Dimensions (H x W x D) 13.3" (339mm) X 11.57" (294mm) X 14.25" (362mm) 15" (382mm) X 14" (355mm) X 16.06" (408mm) 18.11" (460mm) X 15.94" (405mm) X 22.64" (575mm) 20" (508 mm) X 20" (508 mm) X 22.48" (571mm)
Weight 26.01 lb. (11.8 kg) 34.5 lb. (15.6 kg) 66.5 lb. (30.1 kg) 109.7 lb. (49.7 kg)
Downloads
Manual (EN,FR,ES,DE)
Manual (JA)
Manual (ZH)
Manual (EN,FR,ES,DE)
Manual (JA)
Manual (ZH)
Cutsheet
Manual (EN,FR,ES,DE)
Manual (JA)
Manual (ZH)
Cutsheet
Manual (EN, FR, ES)
Manual (ZH)
Resources
KRK Subwoofer Placement & Setup Guide | Subwoofer test tones

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