Active 2×18″ Neodymium Subwoofer
Featuring a dual 18” subwoofer pairing in a voluminous bass-reflex housing, VIO S218 encompasses a vigorous audio performance and a ultra low frequency punch, extending down to 28 Hz: the perfect bottom end addition to large VIO L212 sound reinforcement systems. 
The system’s acoustical potential is driven by 2 Digipro G4® Class-D amplifiers delivering a total amount of 3200 W RMS and making this sub the perfect low-end extension of VIO arrays in larger sound reinforcement applications. 
The switched mode power supply is equipped with PFC (Power Factor Corrector) which greatly improves the efficiency of the system. This also grants a worldwide compatibility of the power supply (from 100V to 240V 50/60Hz) and limits power consumption. Furthermore, the power supply is 380V resistant, so the final amplifiers will be switched off in case of an undesired strike of 380V current, saving them from any damage.
Exclusive technology of VIO S318 amplifier is IPOS (Intelligent Power-On Sequence), a circuit that controls the sequence in which the main power supplies of all units within an array ramp up. 
The preamplifier is equipped with a modular slot for expansion cards: as a default, VIO S218 is equipped with dBTechnologies RDNet card, for real time remote control via Aurora Net software. The system is ready for future upgrades with Audinate DanteTM AoIP protocol. 
VIO S218 comes with built-in technologies: Near Field Communication (NFC™) proximity sensors are used to determine the position of each box within an array. A LED bulb on the front of the enclosure contributes to help the user to recognise, identify and match each box on the remote control software Aurora Net.
Users can run system-test on transducers and a real time impedance control. The on-board delay module allows VIO S218 to reach a max 9.9ms delay with 0.1 ms steps. A cardioid stack preset button automatically process the sound of the backward sub in gradient inverted stack configurations, in order to reach maximum cancellation on the rear side.
The preamplifier’s floating audio input design grants a digital optical isolation between earth ground from the mains and the audio ground flowing into the preamplifier board. This galvanic isolation greatly improves resistance to interferences and any unwanted buzzing and noises.
Thanks to the integrated USB port, the user will perform firmware upgrades and diagnostics analysis, by downloading telemetry data on system performance and failures.
 
2X 18” NEODYMIUM WOOFERS
3200W RMS DIGIPRO G4 AMP TECHNOLOGY
FULL RANGE SMPS WITH PFC
SMPS 380V RESISTANT
FREQUENCY RANGE EXTENDING DOWN TO 28 HZ (-6DB)
OPTO-ISOLATED FLOATING PREAMP BOARD
MODULAR SLOT FOR NETWORK AND DIGITAL AUDIO EXPANSION CARDS
ON BOARD DELAY UP TO 9.9MS
CARDIOID STACK PRESET BUTTON
NFC™ + FRONT LED IDENTIFICATION SYSTEM
SYSTEM TEST FOR QUICK TRANSDUCERS DIAGNOSTICS
IPOS INTELLIGENT POWER-ON SEQUENCE
FULL COMPATIBILITY WITH VIO S318 ACCESSORIES
RDNET CARD INSTALLED
 
Technical Data
Speaker Type: Active Bassreflex subwoofer
Acoustical Data
Frequency Response [- 10 dB]: 27 Hz (HPF)
Frequency Response [- 6 dB]: 28 Hz to cut frequency (Xover dependent)
Max SPL: 143 dB
LF: 2×18” Neodymium
Voice Coil LF: 4”
Directivity: Omnidirectional
Amplifier
Amplifier: 3200 W RMS [2x 1600 W RMS Class-D Digipro® G4] 
Cooling: Passive convection, internal fan
Power Supply: Full-range SMPS with PFC (100V~-240V~, 50-60Hz)
Processor
Controller: DSP 32 bit
AD/DA Converter: 24 bit/96 kHz
Limiter: Peak, RMS, Thermal
Delay Option: 0 – 9.9 ms internal | steps of 0.1 ms [on-board]
Crossover Frequency LF-HF: Selectable 60-110 Hz + Full Range (8 steps)
LF-Xover out slope: 24 dB/Octave
Input
Signal Input: 1 x XLR balanced, 1 x RJ45 Link (RDNet)
Signal Output: 1x XLR balanced, 1 x RJ45 Link (RDNet)
Power Socket:
1x PowerCON TRUE1 In
1x PowerCON TRUE1 Out
Controls:
1x Input Attenuation Rotary Encoder
2x Delay Rotary Encoder (0-9.9 ms)
1x Polarity Inversion Switch (0° or 180°)
1x Cardioid mode Switch
1x X-Over Frequency Rotary Encoder (8 steps)
Special Features:
NFCTM and Frontal LED Identification System
380V Resistant SMPS
IPOS Intelligent Power-On Sequence
Opto-isolated floating pre-amp
System Test (transducers diagnostics)
Mechanics
Housing: Multiplex plywood – Polyurea painting
Handles: 4x Side. Aluminium
Raincover: Included
Rigging Points: 2x Pick Points on top for DRK-210 rigging frame
Width: 1300 mm (51.18 in)
Height: 520 mm (20.47 in)
Depth: 800 mm (31.5 in)
Weight: 85.6 kg (188.72 lbs)
Note: The data are not binding; dBTechnologies reserves the right to modify the data at any time and without previous notice.