


KRK S8.4 - 8" Powered Studio Subwoofer
Overview
The KRK S8.4 Powered Studio Subwoofer adds controlled, detailed low-end performance to professional monitoring systems. Its 8-inch glass-aramid composite woofer delivers tight bass for accurate production work. A Class-D amplifier improves transient response, punch, and control. The S8.4 also provides flexible crossover settings, bypass control, and a compact enclosure. Its reinforced MDF construction makes it suitable for demanding mixing, mastering, and sound design environments.
Key Features:
• 8-Inch Glass-Aramid Composite Woofer: The custom-voiced woofer produces tight, defined bass for accurate low-frequency monitoring.
• Class-D Power Amplification: The efficient amplifier improves transient response, delivering controlled, clear, and punchy low frequencies.
• Four-Position Selectable Crossover: Choose from four crossover positions to integrate the subwoofer with different studio monitors.
• Flexible Bypass Control: The bypass function switches between full-range and subwoofer modes without interrupting your workflow.
• Optional Footswitch Control: An optional footswitch activates the bypass function, giving you convenient control during studio sessions.
• Front-Firing Port Design: The front port extends low frequencies while reducing turbulence for cleaner bass reproduction.
• Reinforced Compact Enclosure: The reinforced MDF cabinet provides durability while keeping the subwoofer practical for space-conscious studios.
Specifications:
• Configuration: Front Loaded, Vented Subwoofer
• System Type: Active Subwoofer
• Low-Frequency Transducer: 8″ Glass Aramid Composite Woofer
• Frequency Response: 34.5Hz – 133Hz
• Max Peak SPL: 112.8 dB
• Amplifier: Class D
• Power Output (Continuous): 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 KΩ Balanced, 9.2 KΩ Unbalanced
• Ground Lift: On/Off
• HPF Bypass: With Footswitch Only
• Footswitch: Optional
• Indicators: Power/Standby
• 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: 15 mm and 18 mm Reinforced MDF
• Finish: Black Vinyl Wrap, Baffle – Black Paint
• Hardware: EVA Isolation Pad
• Dimensions (H x W x D): 11″ (279 mm) x 16.125″ (410 mm) x 11.5″ (292 mm)
• Weight: 26.5 lb. (12 kg)
What's Included:
• EVA Isolation Pad
• Footswitch is optional and not included as standard.
Powerful Low-End for Professional Monitoring:
The KRK S8.4 Powered Studio Subwoofer suits producers, engineers, and studios needing precise low-frequency monitoring. Its controlled bass response, flexible crossover, bypass functionality, and durable construction support demanding production environments. The compact design also works well where available studio space is limited.

