IK Multimedia's iLoud Sub is a compact 6.5-inch active subwoofer engineered to extend studio monitoring into the low-frequency domain without consuming floorspace. At just 24.4 cm wide and 7.1 kg, it delivers 160 W RMS of power with a frequency floor of 25 Hz, making it genuinely portable yet capable of serious bass extension. The defining feature is ARC® X room correction, which automatically calibrates both the sub and any connected monitors–regardless of brand–to your acoustic environment, eliminating guesswork from low-end setup.
Construction relies on a high-performance aluminium 6.5-inch woofer paired with dual 6.5-inch passive radiators on the sides, maximising bass clarity whilst maintaining the compact footprint. Connectivity spans XLR and RCA analogue I/O, USB-C digital audio, and Bluetooth® streaming, with all controls and connectors mounted on the rear for clean desk integration. The included ARC microphone and software analyse your room acoustics and automatically time-align the subwoofer with your monitors, delivering a flat, phase-coherent response across the full spectrum. Peak output reaches 106 dB SPL at 40 Hz, sufficient for critical listening in small-to-mid-sized spaces without acoustic compromise.
ARC X's newest subwoofer alignment algorithm discovers hidden depth in kick drums, bass lines, and synth textures by correcting low-end phase issues that traditional setup methods miss. The result is mixes that translate consistently across playback systems, from car speakers to theatrical rigs, without requiring endless frequency-response adjustments or standalone EQ boxes. For guitarists running bass-heavy rigs through studio monitors, or recording musicians working in treated rooms, this sub closes the monitoring gap beneath 150 Hz that smaller nearfield speakers struggle to reproduce accurately.
Features
- 6.5" aluminium woofer with dual side passive radiators for extended bass response
- 160 W RMS, 200 W peak; frequency response 25–150 Hz @–6 dB
- ARC® X automatic room correction and subwoofer time alignment technology included
- XLR/TRS combo and RCA analogue I/O; USB-C and Bluetooth® digital inputs
- Compact dimensions 24.4 × 25 × 28.3 cm; weight 7.1 kg
- 106 dB peak SPL at 40 Hz; crossover and volume controls on rear panel
- Compatible with iLoud Micro Monitor, Micro Monitor Pro, and iLoud MTM MKII
- Package includes ARC microphone, power cord, and USB-B to USB-A cable



