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<p>The dBTechnologies VIO S218 is a high-output dual 18-inch active bass-reflex subwoofer built for touring and large sound reinforcement systems. Two neodymium woofers with 4-inch voice coils deliver deep low-frequency impact, with usable bandwidth extending from 28 Hz to the selected crossover frequency.</p><p>Two Digipro G4 Class D amplifiers provide a combined 3200 W RMS output and a maximum SPL of 143 dB. Pair it with your VIO loudspeaker system for powerful bottom-end reinforcement, with onboard delay, polarity inversion and a cardioid stack preset to support flexible system configurations.</p><h3>Key Features</h3><ul>
<li>Dual 18-inch neodymium woofers with 4-inch voice coils</li>
<li>Active bass-reflex enclosure</li>
<li>3200 W RMS amplification from two 1600 W RMS Digipro G4 Class D amplifiers</li>
<li>Maximum SPL: 143 dB</li>
<li>RDNet card installed for remote control via Aurora Net</li>
<li>Optional Dante card upgrade, sold separately</li>
<li>NFC proximity sensors and front LED identification system</li>
<li>Onboard delay from 0 to 9.9 ms in 0.1 ms steps</li>
<li>Cardioid mode and polarity inversion controls</li>
<li>System Test transducer diagnostics</li>
<li>Multiplex plywood cabinet with polyurea finish</li>
<li>Rain cover included</li>
</ul><h3>Technical Specifications</h3><ul>
<li>Frequency response (-6 dB): 28 Hz to selected crossover frequency</li>
<li>Frequency response (-10 dB): 27 Hz (HPF)</li>
<li>Directivity: omnidirectional</li>
<li>DSP: 32 bit</li>
<li>AD/DA conversion: 24 bit / 96 kHz</li>
<li>Limiters: peak, RMS and thermal</li>
<li>Crossover: selectable 60–110 Hz plus full range, 8 steps</li>
<li>Crossover output slope: 24 dB/octave</li>
<li>Cooling: passive convection and internal fan</li>
<li>Power supply: full-range SMPS with PFC, 100–240 V, 50–60 Hz</li>
<li>Balanced XLR signal input and output</li>
<li>USB data service port</li>
<li>RDNet RJ45 input and link</li>
<li>powerCON TRUE1 mains input and output</li>
<li>Polarity: 0 or 180 degrees</li>
<li>Two top pick points for a DRK-210 rigging frame</li>
<li>Dimensions (W x H x D), per manufacturer technical table: 1300 x 520 x 800 mm</li>
<li>Weight: 85.6 kg</li>
</ul>
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