The KRK S12.4 is a 12" powered studio subwoofer built for studios that need deep, accurate sub-bass monitoring. The custom Kevlar aramid composite woofer reaches down to 23 Hz, driven by 220 Watts of Class D amplification for a peak SPL of 119.9 dB. The four-position selectable crossover and bypass footswitch integration make it versatile enough for mixing, mastering, sound design, and broadcast production.

Low-Frequency Performance

• Driver: 12" Kevlar aramid composite woofer
• Bass extension: Down to 23 Hz
• Max SPL: 119.9 dB
• Amplifier: Class D, 220 Watts continuous

Crossover & Integration

Four-position selectable crossover for matching to your monitors. Bypass footswitch control (not included) mutes the sub and crossover filter. LFE input (balanced TRS) for dedicated low-frequency effects routing. Polarity and input sensitivity controls for phase and level calibration.

Connectivity

• Inputs: XLR L/R, 1/4" TRS L/R, RCA L/R, LFE (balanced TRS)
• Outputs: XLR L/R, 1/4" TRS L/R, RCA L/R
• Footswitch: 1/4" jack (optional, not included)
• Ground lift: On/off switch

Specifications

• Frequency response: 26 Hz to 97 Hz
• Power: 220 Watts continuous
• SNR: 92 dB
• Color: Black vinyl wrap, black painted baffle
• Enclosure: 18 mm reinforced MDF, front-firing port
• Power input: Selectable 110-120 V / 220-240 V
• Dimensions: 15 x 21.5 x 16 in (381 x 546 x 406 mm)
• Weight: 50 lb (22.7 kg)