The P3D4-15 is the best performing Rockford Fosgate Punch series subwoofer. The P3 15" features Dual 2-Ohm voice coils, 600 Watts RMS of power handling, and accommodates a grille insert using the included cast aluminum trim ring. Anodized Aluminum Voice Coil Former Rockford Fosgate subwoofers use anodized aluminum voice coil formers that provide superior heat dissipation (up to 100° at full power levels). Unlike traditional plastic substitutions, aluminum acts like a heat-sink to quickly dissipate thermal build-up on the voice coil. This keeps subwoofers cool during high SPL conditions. FlexFit Basket - Subwoofer The slot mounted frame pattern allows fine-tuning of the subwoofer's mounting position. Stitched Tinsel Leads Improved reliability and performance by reducing fatigue and possible shorting. The P3D4-15 is Rockford Fosgate's best performing Punch series subwoofer. The P3 subwoofers now feature anodized aluminum cones and dustcaps along with unique spider venting to keep the motor cooler than previous versions. These feature VAST technology to increase surface cone area up to 25% and a FlexFit basket for extreme installations. Best of all, a new hybrid stamp-cast basket offers the best of both worlds by providing super strength while minimizing weight and resonance. VAST Surround - Subs The Vertical Attach Surround Technique significantly increases a subwoofer's effective radiating cone area up to 25%. CEA-2031 Power handling on Rockford Fosgate speakers conform to CEA-2031 industry standards. Klippel Verified Klippel is a speaker certification program allowing us to deliver the best possible speakers. | Size 15-inch Voice Coil DVC Impedance Dual 4 ohms RMS Power Rating (Watts) 600 Peak Power Rating (Watts) 1200 Cone Material Anodized Aluminum Surround Material Santoprene Free Air No Sensitivity 86 dB at 1 Watt Frequency Response 22-250 Hz Top Mount Depth (Inches) 7 11/16 Bottom Mount Depth (Inches) - Cutout Diameter (Inches) 13 11/16 Vas (liters) 155.8 Fs (Hz) 22.4 Xmax (millimeters) 13.9 Warranty 1 Year
