{"product_id":"hertz-ds30-3-12-4-ohm-single-voice-coil-subwoofer","title":"Hertz DS30-3 12\" 4-Ohm Single Voice Coil Subwoofer","description":"\u003cp\u003eThe Hertz DS30-3 is a 12-inch, 4-ohm single voice coil car subwoofer designed to add low-frequency output to a custom mobile audio system. It is a component subwoofer, so it is intended for installation in a properly built enclosure rather than use as a self-contained powered subwoofer. Its 250-watt continuous power handling suits systems using a dedicated compatible subwoofer amplifier.\u003c\/p\u003e\u003cp\u003eThis model is a practical choice for listeners building an entry-level or mid-level bass upgrade with a conventional 12-inch woofer format. It is designed for compact sealed or reflex enclosures, allowing installers to prioritize enclosure size, bass character, and available cargo space. The single 4-ohm voice coil provides a straightforward load for an amplifier channel rated to operate at 4 ohms.\u003c\/p\u003e\u003cp\u003eThe DS30-3 covers a rated 28 to 300 Hz frequency response and has a 91 dB SPL sensitivity specification. Its polypropylene cone with mica injection is paired with a high-excursion butyl rubber surround for controlled cone movement. These materials support the woofer's intended role in reproducing bass while maintaining a durable moving assembly.\u003c\/p\u003e\u003cp\u003eHertz uses a high-density flux ferrite motor and a 38 mm voice coil in the DS30-3. The voice coil is pure copper wound on an aluminum former, while the motor structure incorporates venting to support thermal dissipation. Deep ribbing in the cone surface adds stiffness to the polypropylene diaphragm.\u003c\/p\u003e\u003cp\u003eA correctly matched enclosure and amplifier are essential to getting the intended results from this subwoofer. Hertz provides both sealed and reflex enclosure recommendations, making the DS30-3 suitable for a compact custom box project. It can be used as the low-frequency foundation of a system with aftermarket speakers, a compatible amplifier, and an appropriate low-pass crossover.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-Inch Subwoofer:\u003c\/strong\u003e Provides a conventional 300 mm woofer format for custom bass enclosures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e250 W Continuous Handling:\u003c\/strong\u003e Supports matching with an amplifier delivering appropriate continuous power at 4 ohms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-Ohm Single Voice Coil:\u003c\/strong\u003e Creates a simple, fixed nominal impedance load for compatible amplification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMica-Injected Polypropylene Cone:\u003c\/strong\u003e Uses a stiff, lightweight cone material for bass reproduction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eButyl Rubber Surround:\u003c\/strong\u003e Supports the woofer's excursion while providing a durable suspension element.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFerrite Motor With Venting:\u003c\/strong\u003e Uses a high-density ferrite magnet and venting for thermal management.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eThe DS30-3 combines a polypropylene cone reinforced with mica injection, a butyl rubber surround, and a high-density flux ferrite magnet. Its 38 mm pure copper voice coil is wound on an aluminum former, and the cone incorporates deep ribbing for added rigidity. The driver measures 306 mm overall and has a 4.0 kg net component weight.\u003c\/p\u003e\u003cp\u003ePlan for a 279 mm cutout diameter and at least 120 mm of mounting-depth clearance behind the baffle. Hertz specifies a 21 L sealed enclosure or a 23.9 L reflex enclosure; the recommended enclosure volumes include driver displacement. Use it with a 4-ohm-stable amplifier channel, observe amplifier manufacturer wiring requirements, and set a suitable low-pass crossover during system tuning.\u003c\/p\u003e","brand":"Hertz","offers":[{"title":"Default Title","offer_id":45631729238086,"sku":"DS30-3","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0048\/4163\/5910\/files\/61kL6d84I-L.jpg?v=1784380482","url":"https:\/\/audiowatt.store\/products\/hertz-ds30-3-12-4-ohm-single-voice-coil-subwoofer","provider":"Audio Watt Store","version":"1.0","type":"link"}