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.
S8.4 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
15 mm 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
8" Glass Aramid Composite Woofer
Frequency Response
35Hz - 133Hz
Max Peak SPL
112.8 dB
Amplifier
Class D
Power Output (Continous)
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 K? Balanced, 9.2 K? Unbalanced
Ground Lift
On/Off
Low Pass Frequency
30Hz-205Hz
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
N/A
Output Connectors
XLR L/R, 1/4" TRS L/R, RCA L/R
AC Power Input
100VAC-240VAC
Enclosure
15mm Reinforced MDF
Finish
Black Vinyl Wrap
Hardware
EVA Isolation Pad
Dimensions (H x W x D)
13.3" (339mm) X 11.57" (294mm) X 14.25" (362mm)
Weight
26.01 lb. (11.8 kg)