{"product_id":"15-inch-4-ohm-single-voice-coil-subwoofer","title":"15-Inch 4-Ohm Single Voice Coil Subwoofer","description":"The Rockford Fosgate Punch P1S4-15 is a 15-inch subwoofer that continues the legacy of the \"Punch\" series, originally introduced in the 1980s.\n\nIt features a 2.0-inch (51.6 mm) anodized aluminum voice coil former for superior heat dissipation, a StampCast basket with integrated spider venting, and a linear spider with embedded 16 AWG tinsel leads. The subwoofer also includes custom 10-AWG nickel-plated push terminals and a protective PVC textured magnet cover. It is CEA-2031 compliant, ensuring its power handling meets industry standards.\n\nWith a nominal impedance of 4-Ohms and 250 Watts RMS power handling (500 Watts Max), the P1S4-15 is engineered for robust performance. Its Thiele-Small parameters include an Fs (resonant frequency) of 23 Hz, a Vas (equivalent volume) of 191.5 liters, and a Qts of 0.55. The subwoofer boasts a sensitivity of 87 dB (1W\/1m) and 90 dB (2.8V\/1m), with an Xmax of 9.0 mm. It is recommended for use in standard sealed enclosures with a volume of 1.58 cu. ft. or vented enclosures of 2.66 cu. ft.\n\nIncluded with the subwoofer is a rubberized ABS trim ring, which allows for the accommodation of an optional grille insert.","brand":"Rockford Fosgate","offers":[{"title":"Default Title","offer_id":52872742469944,"sku":"P1S4-15","price":189.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/store.motormia.co\/products\/15-inch-4-ohm-single-voice-coil-subwoofer","provider":"MOTORMIA","version":"1.0","type":"link"}