VTX Series S28 Suspendable Dual 18” Subwoofer featuring ultra long throw, patented Differential Drive® VLF transducers configured in a front-loaded alignment with large area, laminar-flow, low-turbulence central port. Includes: (2x) 2269H dual 4-inch voice coil, dual magnet 18” transducers; captive suspension hardware; front NL4 connector for use when S28 enclosures are configured in rear-firing mode to create reverse-cardioid subwoofer arrays. Trapezoidal form factor facilitates tightly-packed cardioid configurations (ground stacked or suspended). Transportation and handling accessories supplied separately. Weight 81.6 kg (180 lb). Black.