{"product_id":"hertz-cs-250-s4-10-4-ohm-car-subwoofer","title":"Hertz CS 250 S4 10\" 4-Ohm Car Subwoofer","description":"\u003cp\u003eThe Hertz CS 250 S4 is a 10-inch passive car subwoofer designed to add dedicated low-frequency output to an aftermarket audio system. It uses a single 4-ohm voice coil and handles up to 300 watts RMS continuous power. This makes it a suitable choice for systems that need bass reinforcement without requiring an unusually large enclosure.\u003c\/p\u003e\u003cp\u003eThis subwoofer is intended for listeners building or upgrading a car audio system with a compatible external amplifier. Its 4-ohm configuration works with amplifiers designed to drive a 4-ohm subwoofer load. The CS 250 S4 can also be used in multi-subwoofer installations when the amplifier and final wiring load are properly matched.\u003c\/p\u003e\u003cp\u003eHertz specifies 300 watts continuous power handling, 600 watts peak power handling, and 84 dB sensitivity. The driver has a 30 Hz free-air resonance frequency and 12.5 mm of Xmax. These characteristics support low-frequency reproduction in a properly designed enclosure.\u003c\/p\u003e\u003cp\u003eThe CS 250 S4 uses a polypropylene cone and a high-density flux ferrite magnet assembly. Its 35 mm voice coil is wound in six layers of pure copper on a high-temperature glass-fiber former. Hertz also uses fluid-dynamic optimization and FEM-developed cone and dust-cap geometry intended to reduce distortion during higher-excursion operation.\u003c\/p\u003e\u003cp\u003eFor enclosure design, Hertz provides a sealed-box recommendation starting at 16 liters (0.57 cubic feet). The specified compact sealed enclosure uses a 231 mm mounting hole and 19 mm wood. Solid push terminals accept cable up to 8 AWG, helping simplify wiring in single- or multi-subwoofer systems.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e300 W RMS Handling:\u003c\/strong\u003e Supports amplifier matching around its 300-watt continuous power rating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-Ohm Single Voice Coil:\u003c\/strong\u003e Provides a straightforward load for compatible mono or bridged amplifiers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10-Inch Driver:\u003c\/strong\u003e Adds dedicated bass output while fitting a compact sealed enclosure design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolypropylene Cone:\u003c\/strong\u003e Uses a durable cone material engineered for low-frequency operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12.5 mm Xmax:\u003c\/strong\u003e Provides linear excursion capability for bass reproduction at higher output levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8 AWG Push Terminals:\u003c\/strong\u003e Accepts substantial speaker cable without separate terminal hardware.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eThe CS 250 S4 combines a polypropylene cone with a high-density flux ferrite magnet, a six-layer pure-copper voice coil, and a high-temperature glass-fiber coil former. Its magnetic assembly includes rubber protection, while the mounting gasket is made from high-strength ABS plastic. An optional Hertz CG 250 metal-mesh grille can be fitted for driver protection and finishing.\u003c\/p\u003e\u003cp\u003ePlan for a 231 mm (9.09-inch) mounting cutout and 115 mm (4.53-inch) mounting depth, while allowing additional clearance for the overall driver depth. Hertz provides a sealed enclosure design of 16 liters (0.57 cubic feet), with 19 mm (0.75-inch) wood and external dimensions of 385 x 385 x 180 mm. Use an amplifier compatible with a 4-ohm load, set gain appropriately for the subwoofer's 300-watt RMS rating, and follow the recommended crossover settings for the selected enclosure.\u003c\/p\u003e","brand":"Hertz","offers":[{"title":"Default Title","offer_id":45631722127430,"sku":"CS250S4","price":279.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0048\/4163\/5910\/files\/71a70dsw9vL_e34706c8-e793-4081-875b-45d49c446fdd.jpg?v=1784379458","url":"https:\/\/audiowatt.store\/products\/hertz-cs-250-s4-10-4-ohm-car-subwoofer","provider":"Audio Watt Store","version":"1.0","type":"link"}