{"product_id":"rockford-fosgate-p1s4-15-15-4-ohm-svc-subwoofer","title":"Rockford Fosgate P1S4-15 15\" 4-Ohm SVC Subwoofer","description":"\u003cp\u003eThe Rockford Fosgate P1S4-15 is a 15-inch single-voice-coil car subwoofer designed to add substantial low-frequency output to a vehicle audio system. Its 4-ohm nominal impedance and 250-watt RMS power rating make it suited to a properly matched mono amplifier or subwoofer channel. It is intended for listeners building a dedicated bass system rather than relying on factory full-range speakers for low-end response.\u003c\/p\u003e\u003cp\u003eThis Punch P1 model uses a large 15-inch cone to move air efficiently in sealed or vented enclosures. A sealed box can support a more compact installation and controlled bass character, while the recommended vented alignment is tuned for greater low-frequency extension. The enclosure choice, amplifier setup, and vehicle acoustics will all affect final system performance.\u003c\/p\u003e\u003cp\u003eThe P1S4-15 uses a Kevlar-reinforced paper-pulp cone with an NBR rubber surround. Its high-temperature 2-inch voice coil includes a spun-laced Nomex reinforcement collar, while the motor structure uses an extended pole piece and bumped, vented backplate. These design elements support stable operation under its rated power handling.\u003c\/p\u003e\u003cp\u003eIntegrated spider venting is used to promote voice-coil cooling, and the linear spider incorporates embedded 16 AWG tinsel leads. The woofer also has custom 10-AWG nickel-plated compression terminals for secure speaker-wire connections. A heavy-gauge stamped-steel frame and protective PVC magnet cover complete the structure.\u003c\/p\u003e\u003cp\u003eThis subwoofer fits systems that have adequate enclosure volume and amplifier power for a 15-inch driver. Its single 4-ohm voice coil presents one nominal 4-ohm load to the amplifier. It can be used as the bass section of a system with aftermarket speakers and a compatible amplifier, with enclosure construction and crossover settings selected for the vehicle and installation goals.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e15-Inch Driver:\u003c\/strong\u003e Large cone area supports dedicated low-frequency reproduction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e250-Watt RMS Rating:\u003c\/strong\u003e Matches amplifiers rated appropriately at 4 ohms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-Ohm SVC Design:\u003c\/strong\u003e Provides a single nominal 4-ohm amplifier load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKevlar-Reinforced Cone:\u003c\/strong\u003e Reinforced paper-pulp construction supports cone rigidity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpider Venting:\u003c\/strong\u003e Helps promote airflow around the voice coil.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10-AWG Terminals:\u003c\/strong\u003e Nickel-plated compression terminals accept substantial speaker wire.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eThe P1S4-15 combines a Kevlar-reinforced paper-pulp cone, NBR rubber surround, high-temperature voice coil, and heavy-gauge stamped-steel frame. It also uses an extended pole piece, bumped vented backplate, protective PVC magnet cover, and soft-touch ABS trim ring. The trim ring is designed for use with an optional grille.\u003c\/p\u003e\u003cp\u003eAllow for the 13.85-inch cutout diameter and 6.98-inch mounting depth before selecting an enclosure or mounting location. Rockford Fosgate specifies a 1.58-cubic-foot sealed enclosure or a 2.66-cubic-foot vented enclosure, with the vented alignment using a 4-inch-diameter, 10.8-inch-long port. Use an amplifier and wiring arrangement appropriate for a single 4-ohm, 250-watt RMS subwoofer, and set the system crossover and gain carefully during installation.\u003c\/p\u003e","brand":"Rockford Fosgate","offers":[{"title":"Default Title","offer_id":45634167242822,"sku":"P1S4-15","price":189.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0048\/4163\/5910\/files\/61_bzqvHtqL_641c917f-aad8-4c8a-9fb5-b74c0bd46cdb.jpg?v=1784428377","url":"https:\/\/audiowatt.store\/products\/rockford-fosgate-p1s4-15-15-4-ohm-svc-subwoofer","provider":"Audio Watt Store","version":"1.0","type":"link"}