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The Rockville VS12K54 is a single 12-inch K5 subwoofer already mounted in a vented enclosure, so it drops into a trunk without building a box. Rockville rates it at 1,400 watts peak, 700 watts program and 350 watts CEA RMS, which puts it in the budget end of preloaded bass. It suits drivers who want a simple bass upgrade on modest amplifier power, not competitors chasing high SPL numbers. Against loaded boxes from established car audio brands, it trades refinement and long-term durability for a low entry point and easy install.
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Lowest price we've seen: $109.95 on Nov 13 at Amazon. Tracked across 1 store since Nov 13.
Owner feedback on Rockville's loaded K5 enclosures is mixed. Buyers like the easy install and output for the money, but some report failures and rattling boxes over time.
The Rockville VS12K54 is a single 12-inch K5 Series car subwoofer that comes pre-loaded in a vented enclosure. It is rated at 1400 watts peak and 350 watts CEA RMS, with a final impedance of 4 ohms.
The enclosure is made of ¾-inch MDF that is bonded, stapled and braced. It has computer-designed vents angled at 15% and is covered in aviation-grade tweed carpet. Speaker wire connects through satin nickel push terminals.
The subwoofer has a cast iron basket with a black sanded finish and a fiber-reinforced, non-pressed paper cone. The cone has a foam surround, blue stitched reinforcement and a polypropylene dustcap. The 2-inch 4-layer black aluminum voice coil is wound with OFC (100% copper) wire. A vent hole in the T-yoke helps dissipate heat. A Rockville-branded mounting gasket helps seal the sub air-tight when mounted.
