{"product_id":"cadence-pro-car-audio-8-250-watt-rms-4-ohm-dual-voice-coil-subwoofer-ud8d4","title":"Cadence Pro Car Audio 8\" 250 Watt RMS 4-Ohm Dual Voice Coil Subwoofer UD8D4","description":"\u003cul\u003e\n\u003cli\u003eWire it to 2 ohms for maximum power or 8 ohms for multi-speaker setups, giving you full control over your system’s performance.\u003c\/li\u003e\n\u003cli\u003eDelivers 250W RMS and 500W peak power with a 7mm Xmax, producing deep, accurate, and powerful low-end frequencies.\u003c\/li\u003e\n\u003cli\u003eReinforced ultra-stiff pressed paper cone and high-excursion butyl rubber surround ensure strength, clarity, and long-term reliability.\u003c\/li\u003e\n\u003cli\u003ePerforms beautifully in sealed or ported boxes—tight and clean in 0.47 cu ft sealed, or deep and full in 0.81 cu ft ported setups.\u003c\/li\u003e\n\u003cli\u003eBold orange surround with smooth black cone and cast aluminum frame makes this 8\" sub both a visual highlight and a serious performer.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eCadence Pro Car Audio 8\" 250 Watt RMS 4-Ohm Dual Voice Coil Subwoofer UD8D4\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eThis Listing Includes:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003e(1) Cadence UD8D4 8\" Subwoofer\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003eThe Cadence UD8D4 from the Ultra Drive Series blends art and engineering into a compact powerhouse of sound and style. Its vivid orange surround and smooth black cone create a bold visual contrast that commands attention, while its refined construction delivers the deep, musical bass Cadence is known for. This 8-inch subwoofer is more than just a speaker—it’s a statement of precision, design, and passion for performance.\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003eFeaturing dual 4-ohm voice coils, the UD8D4 offers versatile wiring flexibility for any setup. Wire it to 2 ohms for maximum output and thunderous low-end response, or to 8 ohms for a balanced, multi-speaker configuration. Whether your goal is heart-pounding impact or smooth system integration, the UD8D4 adapts effortlessly to your build.\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eApplication Type: Car\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eSize \u0026amp; Type: 8\"\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003ePower Handling: 250W RMS \/ 500W Peak\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eFrequency Response: 38 - 500 Hz\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eSPL @ 1w\/1m: 92 dB\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eImpedance: Dual 4 Ohm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eVoice Coil: Dual 4 Ohm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCone: Reinforced Ultra-Stiff Pressed Paper\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eSurround: High Excursion Butyl Rubber\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eBasket: Cast Aluminum\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMagnet: Cast Aluminum Magnet Heatsink\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eXmax: 7 mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eVAS: 8.19L\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eFS: 51.32 Hz\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eQTS: 0839\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eCutout Diameter: 7.24\" (184 mm)\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMounting Depth: 5\" (127 mm)\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eIdeal Sealed Box Volume: 0.47 cu ft (13.31 L)\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eIdeal Ported Box Volume: 0.81 cu ft (22.94 L)\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003ePort Diameter: 3\" (76.2 mm)\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003ePort Length: 5\" (127 mm)\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e","brand":"Cadence","offers":[{"title":"Default Title","offer_id":47224086495480,"sku":"CAD-UD8D4","price":129.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0029\/9384\/8365\/files\/526da4Cadence_UD8D4_8_250W_RMS_Dual_4_Ohm_Car_Audio_Subwoofer_Tight_Deep_Bass_Main_Image7215a6177d38844b981cf68a14efd4c360ba705506f529c5c97279a451.jpg?v=1761150276","url":"https:\/\/bigjeffaudio.com\/products\/cadence-pro-car-audio-8-250-watt-rms-4-ohm-dual-voice-coil-subwoofer-ud8d4","provider":"Big Jeff Online Inc","version":"1.0","type":"link"}