EX Display Ground Zero GZHW 25XSPL-D1 – 25cm / 10 Inch SPL Audio Subwoofer 2500W Max Power. 25 cm / 10? High quality SPL subwoofer. 10? High quality SPL subwoofer with alumiunum cast basket and reinforced paper cone. 10? High quality SPL subwoofer. Long stroke compound surround. Solid aluminum cast basket. 63 mm / 2.5? Copper voice coil. IMPP dust cap with 3D structure logo. 25 cm / 10? 1200 / 2500 Watts. 800 – 2500 Watts. 63 mm / 2.5? Copper. 45 mm / 1.77? 238 mm / 9.37? 8.53 L / 0.30 cu.