KRK S12.4

The KRK S12.4 is an active studio subwoofer. A specially designed Kevlar woofer delivers exceptionally tight and precisely defined bass, while the Class-D amplifier significantly improves transient response, control, and punch. A 4-position switchable crossover makes it easy to match the subwoofer settings to your existing monitors. Pairing the S12.4 with KRK monitors or other studio monitors provides an optimised listening experience with extended low-end, while the footswitch-enabled bypass control allows you to quickly mute the subwoofer and send full-range audio to your studio monitors.

Key Features of the KRK S12.4 Subwoofer

Front-ported active subwoofer
12" Kevlar® aramid composite woofer
Bass extension down to 23Hz with a maximum SPL of 119.9dB
Footswitch control enables/disables the sub and crossover filter (footswitch not included)
Redesigned cabinet with a lower profile and front-firing bass reflex port
Powerful, lightweight Class-D amplifier
Power on and standby indicator
Optimised 4-position crossover control
Universal connectivity – XLR, 6.3mm TRS, and RCA inputs and outputs
Polarity and input sensitivity controls
Ground lift switch prevents ground loops

Thoughtful Design

The KRK S12.4 subwoofer uses a reinforced MDF cabinet for maximum strength and durability. The front port is designed to provide extended low-frequency response while limiting coupling with surrounding surfaces. The shape of the port is optimised to reduce air turbulence.

Package Contents:
KRK S12.4 Subwoofer, isolation pad
Technical Specifications:
Output Power (Continuous): 220W at 1% THD+N @ 44Hz
Signal-to-Noise Ratio: 92dB
Amplifier Distortion (THD+N): ≤ 0.3% at -3dB of max power from 29–97Hz
Input Impedance: 9.4kΩ Balanced, 9.2kΩ Unbalanced
Input Connectors: XLR L/R, 6.3mm TRS L/R, RCA L/R, 6.3mm footswitch jack
LFE Input: Balanced TRS
Output Connectors: XLR L/R, 6.3mm TRS L/R, RCA L/R
Power Supply: Switchable 110–120V / 220–240V AC
Cabinet: 18mm reinforced MDF
Finish: subwoofer – black vinyl wrap, front panel – black paint
Isolation Pad Material: EVA