The S218 model was designed to be actively driven by the M3 controller. To support the large excursions typical of a high-quality sub-low speaker, 2 powerful 460mm drivers with a 101mm voice coil are used. The presence of large reflex agreements ensures optimal unit tuning and reduces air noise. In combination with the H2 or H3 models, the S218 system is the bass base of the powerful Blackline portable system used for music or live events. TYPE: Dual-driver vented sub-bass system FREQUENCY RESPONSE: 35Hz-150Hz ± 3dB DRIVERS: 2 x 18 "(460mm) RATED POWER: 1000W AES, 4000W peak RECOMME NDED AMPLIFIER: 800-2000W into 4 ohms SENSITIVITY: 102dB MAXIMUM SPL: 130dB continuous, 136dB peak IMPEDANCE: 4 ohms nominal DISPERSION (- 6dB): € “ CROSSOVER: 150Hz active ENCLOSURE: 320 liter, multi-laminated birch ply FINISH: Textured black paint PROTECTIVE GRILLE: Black perforated steel CONNECTORS: 2 x Neutrik NL4 FITTINGS: 4 x 4 "(100mm) castors DIMENSIONS: (W) 561mm x (H) 1066mm x (D) 780mm WEIGHT: 87kg