BX-LOC4 | Digital Bass Reconstruction Processor with 4-Channel Line Output Converter

Maximize your system’s performance with the Soundstream BX-LOC4 — an all-in-one digital bass restoration processor and 4-channel line output converter designed for seamless integration with OEM or aftermarket head units. Whether you're upgrading a factory system or enhancing a custom build, the BX-LOC4 ensures your music hits harder and cleaner, delivering rich low-end impact and full-range output flexibility.

This advanced processor restores and enhances low frequencies that are often lost in compressed music or factory sound systems. With a variable 27Hz–63Hz bass frequency sweep and adjustable center Q/width, you can fine-tune your bass response with pinpoint accuracy. A dash-mounted remote control allows for real-time bass level adjustments, subsonic crossover tuning (35Hz–80Hz), and provides an easy-to-read display for voltage monitoring, subsonic frequency, and output level.

Supporting both speaker-level and RCA inputs, the BX-LOC4 offers four full-range RCA outputs and dedicated subwoofer RCA outputs, making it the ideal hub for connecting amplifiers in complex multi-channel systems. With selectable impedance matching, audio signal-sensing turn-on, and a built-in LED clipping indicator, the BX-LOC4 is built for powerful, reliable performance in any setup.