S8.4
Powered Studio Subwoofer
The S8.4 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 S8.4 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 S8.4 subwoofer doesn’t just deliver precise bass and a rich feature set: it’s the next dimension in subwoofer performance.
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.
S8.4 Features
- 8" glass aramid composite woofer
- Bass extension to 29Hz with a max SPL of 112.8 dB
- Footswitch control enables/disables sub and crossover filter (footswitch not included)
- Redesigned cabinet with a lower profile and front-firing bass port
- 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
Reviews
| KRK Subwoofers Compared |
S8.4
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S10.4
|
S12.4
|
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" Kevlar® Aramid Composite Woofer | 12" Woven Kevlar® High Performance Woofer |
| Frequency Response | 34.5Hz - 133Hz | 30Hz - 110Hz | 26Hz - 97Hz | 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 |
| HPF Bypass | With Footswitch Only | With Footswitch Only | With Footswitch Only | With Footswitch Only |
| Footswitch | Optional | Optional | Optional | Included |
| Indicators | Power/Standby | Power/Standby | Power/Standby | 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 | 15 mm and 18 mm Reinforced MDF | 15 mm and 18 mm Reinforced MDF | 18mm Reinforced MDF | 18mm & 36mm Reinforced MDF |
| Finish | Black Vinyl Wrap, Baffle - Black Paint | Black Vinyl Wrap, Baffle - Black Paint | Black Vinyl Wrap, Baffle - Black Paint | Textured Paint |
| Hardware | EVA Isolation Pad | EVA Isolation Pad | EVA Isolation Pad | N/A |
| Dimensions (H x W x D) | (H x W x D): 11" (279 mm) x 16.125" (410 mm) x 11.5" (292 mm) | (H x W x D): 13.4375" (341 mm) x 18.875" (479 mm) x 12.1875" (310 mm) | (H x W x D): 16.375" (416 mm) x 23.875" (606 mm) x 14.375" (365 mm) | 20" (508 mm) X 20" (508 mm) X 22.48" (571mm) |
| Weight | 26.5 lb. (12 kg.) | 35 lb. (15.88 kg.) | 62.5 Lb. (28.3 kg.) | 109.7 lb. (49.7 kg) |
Downloads |
Manual (EN,FR,ES,DE,JA,ZH) | Manual (EN,FR,ES,DE,JA,ZH) | Manual (EN,FR,ES,DE,JA,ZH) |
Cutsheet Manual (EN, FR, ES) Manual (ZH) |
Resources |
KRK Subwoofer Placement & Setup Guide | Subwoofer test tones | |||