Kicker 49L7X181 18" SoloX L7X 1 Ohm DVC Subwoofer 2000 Watts RMS

Highlights Field-Replaceable Recone Kit – cone/voice coil/spider assembly, and no gluing required Forced Air Cooling™ Three-inch, aluminum voice coil former Dual-spider suspension Double-pressed pulp cone Heavy-duty UV-resistant Santoprene surround Custom rubber magnet boot Cast-aluminum basket Single 8 AWG terminal and dual 8 AWG terminal block Triple-Stacked Ferrite Magnet Biggest SoloX at 18" Specifications 8-11/16, 22 Size 18", 46 cm approx Rated Impedance (Ohms) 1 DVC Rec Amp Power RMS  1000-2000 Frequency Response 18-100 Magnet Diameter (in, cm) 8-11/16, 22 Total Magnet Weight (oz, kg) 406, 11.5 Voice Coil Diameter (in, mm) 3, 75 Voice Coil Winding Width (in, mm) 2.5, 62.5 Top Plate Thickness (in, mm) 0.5, 13 Xmax (in, mm) 1.25, 31.25 Recommended Vented Box Volume (ft³, L) 7.5, 214.5 Mounting Depth (in, cm) 11-9/16, 29.3 Port Opening (in x in, cm x cm) 6.5 x 19.5, 16.5 x 49.5 Port Length (in, cm) 27.75, 70.5 Vented Enclosure Tuning Frequency (Hz) 28 Warranty 2 Years