The dBTechnologies VIO S218 is an active bass-reflex subwoofer featuring two 18" neodymium woofers with 4" voice coils and a 3,200 W RMS Class-D Digipro® G4 amplifier. It delivers up to 143 dB SPL with a usable bandwidth extending from 28 Hz and includes advanced DSP control, RDNet remote management, cardioid processing, and NFC identification. The VIO S218 is Dante-ready and designed for large sound reinforcement applications and touring systems.