Ground Zero GZHW 16SPL – 6.3 Car Audio Bass SPL Dual 2 Ohm Subwoofer Sub 1000W. 16 cm High-Performance Subwoofer. 6.3? High-Performance Subwoofer with alumiunum cast basket and reinforced paper cone. 6.3? High quality SPL subwoofer. Long stroke compound surround. Solid aluminum cast basket. 50 mm / 2? Copper voice coil. Diameter 16 cm / 6.3. Impedance 2x 2 Ohms. Power recommendation 400 – 1000 Watt. Voice coil 50 mm / 2 copper. Excursion (Xmax) 30 mm / 1.18. Mounting cut out Ø 153 mm / 6.02. Mounting depth 110 mm / 4.33. Resonance frequency (Fs) 51 Hz. Damping ratio (Qts) 0.46. Air volume (Vas) 2.8 L / 0.10 cu. We offer a collection service on some of our items. Please call our retail shop before collecting an item. WE DO NOT REPLY TO ANY DIRECT EMAILS. Whatever you are looking for, we have a great range of vehicle products for your car, van or motorhome. We are confident that you will find everything you need and more at Motor Solutions. Motor Solutions are proud suppliers of a wide range of products from some of the top vehicle security, multimedia and accessories manufacturers including Clifford car alarms, Smartrack vehicle trackers, Cobra motorhome security devices, and Snooper Ventura sat nav systems for motorhomes. Thanks For visiting Motor Solutions.