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Style:4-Ohm Â |Â Product Packaging:Standard Packaging Product Description Punch P1 svc 4 ohm 15-inch 250 Watts RMS 500 Watts peak subwoofer features 2 inch copper clad aluminum voice coil stamp cast frame structure features Flex fit Basket design Kevlar fiber reinforced paper cone 250 Watts RMS 500 Watts peak power rating 15-inch, 4-Ohm subwoofer with 500 Watts maximum power handling (250 Watts RMS) Kevlar fiber reinforced paper cone with high-density poly-foam surround Amazon.com Rockford Fosgate P1 15-inch subwoofers are first in a Rockford’s Punch series, and a well-known addition to fanatic car audio systems. Kevlar fiber reinforced paper cones deliver bass impact you can feel, and ‘VAST’ technology increases surface cone area up to 25%. Best in standard sealed and vented enclosures. Includes soft touch ABS tri trim ring. Rockford Fosgate Punch Series Subs Featuring innovative parabolic cone designs, oversized surrounds and large motor assemblies, Punch subwoofers deliver deep, loud, aggressive bass–not to mention stunning cosmetics that you’ll want to show off. For over 20 years, Punch subwoofers have shown the world that big bass, extended power handling and awesome cosmetics need not cost a fortune. One listen and you’ll know why it’s called The PUNCH. P1S4-15 Features Punch subwoofers deliver deep, loud, aggressive bass and feature flex fit baskets for easy adjustments when mounted. Click here for a larger image Anodized aluminum voice coil formers provide excellent heat dissipation. Click here for a larger image Speaker Construction Custom 10-AWG nickel plated push terminals Extended pole piece and bumped vented backplate High-temp voice coil with spun-laced Nomex re-inforcement collar Kevlar fiber reinforced paper cone Linear spider with embedded 16 AWG tinsel leads Protective PVC textured magnet cover Soft touch ABS trim ring with optional grille StampCast basket with integrated spider venting Anodized Aluminum Voice Coil Former Rockford Fosgate subwoofers use anodized aluminum voice coil formers that provide superior heat dissipation (up to 100Â° 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. CEA-2031 Power handling on Rockford Fosgate speakers conform to CEA-2031 industry standards. This means your speaker has the capacity to handle power under continuous damand, not instantaneous power handling, that over time, can damage voice coils. Flex Fit Basket The Flex Fit frame utilizes slots (where feasible) instead of single screw sized holes. This allows slight adjustment of the speaker when mounted. Stitched Tinsel Leads Multipoint ‘periodic’ stitched lead wire technique reduces the mass of each tinsel lead and spreads stress and strain over a greater area, significantly improving the reliability and performance of the subwoofer. These stitched tinsel leads withstand extreme duty cycles, fatigue and high current that is critical to robust design. About Rockford Fosgate Setting the standard for excellence in the audio industry, the Rockford Corporation markets and distributes high-performance audio systems for the mobile audio aftermarket and OEM market. Headquartered in Tempe, Ariz., Rockford Corporation is a publicly traded company and manufactures its products under four brands: Rockford Fosgate, Rockford Acoustic Design, Lightning Audio and InstallEdge.com. P1S4-15 Specifications Size: 15 Inches Impedance: 4-Ohm Power Handling: 250 Watts RMS 500 Watts Max Voice Coil Diameter: 2.0 Inches Magnet Weight: 54 oz. Speaker Connector: Dual 10 AWG compression SPL(1w/1m): 87.5 dB Woofer Displacement: 0.060′ cu. ft (1.70 Liters) Cutout Diameter: 13.94 inches Mounting Depth: 6.98 inches What’s in the Box Rockford Fosgate Punch P1 P1S4-15 15-Inch Subwoofer (4 Ohm), Trim Ring, Installation Hardware, User’s Manual