Martin Audio Blackline X218B - 2 x 18" Passive Subwoofer

The Blackline X218 is a dual-driver, high performance subwoofer for use with BlacklineX Series full-range loudspeakers. With an operating range of 42Hz-200Hz + 3dB, it produces high output levels with low distortion and can be used singly or stacked horizontally. It features dual 18” (460mm)/4” (100mm) voice coil, long-excursion drivers in a reflex enclosure with eight large ports that reduce air turbulence at high output levels.

• Dual-driver, direct radiator subwoofer
• 2 x 18” (460mm) drivers with 4” (100mm) voice coils
• Durable plywood enclosure
• Large ports for reduced air noise
• Powder coated, perforated steel grille
• Integral ergonomic handles
• 35mm pole-mount socket
• Feet for vertical or horizonal operation
• Rebate recesses for stable horizontal stacking
• M10 flying inserts