The Rockford Fosgate P3SD4-8 is a high-performance shallow-mount 8-inch subwoofer engineered to deliver deep, punchy bass in vehicles where mounting depth is limited. Part of Rockford Fosgate’s Punch P3S lineup, the P3SD4-8 combines advanced materials, a compact low-profile frame, and aggressive bass performance for trucks, under-seat installs, motorcycles, SUVs, and custom stealth audio builds. Built with an anodized aluminum cone and dustcap, Rockford’s VAST surround technology, and a durable StampCast basket, the P3SD4-8 is designed to maintain rigidity under high power while maximizing cone area and cooling efficiency. The dual 4-ohm voice coil configuration provides flexible wiring options for a variety of amplifier setups. Features Punch P3S Series shallow-mount subwoofer 8” low-profile subwoofer design Dual 4-ohm voice coils Anodized aluminum cone & dustcap VAST™ Santoprene surround technology StampCast basket construction High-temperature aluminum voice coil former Spider venting cooling system Compact mounting depth for tight installs High-excursion shallow woofer design Optimized for sealed or ported enclosures Specifications Subwoofer Size: 8” Voice Coil Configuration: Dual 4-Ohm RMS Power Handling: 150 Watts RMS Peak Power Handling: 300 Watts Peak Frequency Response: 38Hz – 250Hz Sensitivity: 82 dB Mounting Depth: 2.66” Cutout Diameter: 7.13” Recommended Sealed Box: 0.20 – 0.70 ft³ Recommended Ported Box: 0.75 ft³ Technologies VAST™ Surround Increases effective cone area for deeper bass and greater output. Anodized Aluminum Cone Lightweight and rigid for improved bass accuracy and durability. StampCast Basket Reduces flex and distortion while improving cooling. Shallow-Mount Design Perfect for under-seat and tight-space installations. Included In The Box P3SD4-8 subwoofer Installation hardware User documentation
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