Brand NEW! Rockford Fosgate P1 15" are the first in a family of world famous subwoofers called "The Punch". During their inception in the 1980's, they quickly became "The Woofer of Choice" for fanatic car audio systems, with a continued tradition today. Kevlar fiber reinforced paper cones deliver bass impact you can feel, and our VAST technology increases surface cone area up to 25%. Best in standard sealed and vented enclosures. Includes soft touch ABS trim ring. Linear spider with embedded 16 AWG tinsel leads High-temp voice coil with spun-laced Nomex re-inforcement collar Kevlar fiber reinforced paper cone StampCast basket with integrated spider venting Rubberized ABS trim ring with optional grille Custom 10-AWG nickel plated push terminals Extended pole piece and bumped vented backplate Protective PVC textured magnet cover Size - 15" Subwoofer Type - Standard Nominal Impedance - 4-Ohm Power Handling (Watts RMS) - 250 Watts RMS 500 Watts Max Speaker Connector - Dual 10 AWG compression Magnet Weight (oz) - 60 oz. (1.70 kg.) Voice Coil Type - Single Voice Coil Voice Coil Diameter - 2.0" (51.6 mm) Re (Ohms) - 3.60 Sd (cm2) - 876 Fs (Hz) - 23 Qts - 0.55 Qes - 0.62 Qms - 3.20 Vas (Liters) - 191.5 Le (mH) - 3.14 Xmax (mm) - 9.0 Cutout Diameter - 13.85 in. (351.8 mm) SPL (dB @ 1w/1m) - 87 SPL (dB @ 2.8v/1m) - 90 Mounting Depth - 6.98 in. (177.2 mm) Woofer Displacement - 0.148 cu. ft. (4.2 Liters) Sealed Box Volume (Vb) - 1.58 cu. ft. (44.7 Liters) Vented Box Volume (Vb) - 2.66 cu. ft. (75.3 Liters) Shipping Weight - 16.3 Lbs. (7.39 kg) - All international buyers are responsible for all tax, duties and/or customs fees.