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The Hifonics HFX12D4 is a 12-inch car subwoofer with a dual 4-ohm voice coil, rated at 400 watts RMS and 800 watts peak. The dual voice coil lets you wire it to 2 or 8 ohms, so it fits a range of amplifiers. A heavy-gauge steel basket, vented aluminum former and back venting are aimed at keeping the driver cool and controlled under power. It suits budget-minded bass upgrades in sealed or vented boxes; at this level it competes with entry-level drivers like the Kicker Comp and Rockford Fosgate Prime, which offer similar power handling but often more proven durability.
In stockSold by SpreetailReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
In stock
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Lowest price we've seen: $75.40 on Nov 10 at Best Buy. Tracked across 1 store since Nov 10.
Ratings are middling, with buyers split between those who find it a strong value for the power and those who hit durability or sound-quality problems. Complaints tend to center on early failures and loose bass rather than installation.
The Hifonics HFX12D4 is a powerful 12-inch subwoofer designed to enhance your car audio system with deep, impactful bass. This packag includes 2 speakers that feature a dual 4-ohm voice coil design, offering flexible wiring options for easy integration into various setups. Whether you're upgrading your system or starting fresh, this speaker delivers impressive low-frequency response with clarity and precision. With 800 watts peak power and 400 watts RMS, the subwoofer produces rich, controlled bass. Its heavy-gauge, powder-coated steel basket minimizes vibrations, while the pressure-treated foam surround and poly-cotton spider ensure smooth cone movement and reduced distortion. A vented aluminum former and back venting system efficiently dissipate heat, allowing for consistent, high-performance sound. Designed for versatile installation, the speaker fits sealed and vented enclosures, providing either tight or booming bass. Its 5.61-inch mounting depth accommodates various vehicle types, while spade-style terminals allow secure wiring. With an 86dB sensitivity rating, it efficiently converts power into sound without overloading your amp. For those seeking a powerful yet reliable upgrade, this pair of Hifonics HFX12D4 speakers is a solid choice. Built for performance and durability, it transforms your car’s sound system, making every drive a dynamic listening experience.
