High output subwoofer

  • 2x 18" ultra low distortion drivers
  • Extended frequency response down to 30 Hz
  • System integration with LINUS DSP amplifiers
  • Maximum SPL 144 dB (peak)
  • Low power compression


The U4 is a double 18" high output subwoofer that provides powerful and extended low frequency response with immense headroom. Low port compression and optimized enclosure design give a tight, accurate bass response that is ideally suited for dance clubs, mobile and installation applications.


The U4 is equipped with twin extremely long excursion 18“ ultra low distortion woofers. The strong motor delivers extreme high magnetic flux for increased efficiency. The 4" voice coil is 32 mm high, ensuring ultra linear excursion of 20 mm / pp at consistent magnetic force.

The state-of-the-art carbon-fiber cone ensures maximum stiffness and low moving mass. Three aluminum shorting rings reduce intermodulation distortion, minimizing induction variation whilst reducing thermal compression. This design dramatically reduces the distortion of a typical subwoofer at longer excursion levels, and improves the overall sound quality and performance characteristics of the cabinet.


The U4 is designed to work exclusively with Coda Audio LINUS amplifiers as an integrated solution for DSP control, amplification, network remote control and diagnostic.
The integrated solution ensures optimal performance and protection.


The U4 is perfectly suited as a sub-extension for G-Series, D-Series, CUE-Series and TiRAY, extending the system performance down to 30 Hz. Typical applications are dance clubs, theaters, houses of worship and live sound venues.

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