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The Rockville W12T4S4 is a 12-inch shallow-mount car subwoofer rated 350 watts RMS and 1,400 watts peak, sold here as a pair. Its shallow frame is built for tight spots: under a truck seat, behind a slim enclosure wall, or in a shallow box where a standard-depth 12 won't fit. The 4-ohm single voice coil keeps wiring simple, and the CEA-rated RMS figure is a legitimate spec rather than a marketing peak. It suits budget-minded bass builders who need depth savings more than maximum output; compared with premium shallow subs it gives up some excursion and output, but it undercuts them on value.
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Owners of budget shallow-mount setups generally find the W12T4S4 delivers usable bass for the money in space-limited installs. Some report it needs a well-built enclosure and adequate power to perform, and that output trails deeper, pricier subs.
This is a pair of Rockville W12T4S4 12-inch shallow mount car subwoofers. Each has a 4-ohm single voice coil and is built for deep low-frequency output where space is limited, such as behind the seat in a compact car or pickup truck, or in a motorcycle saddlebag.
Each subwoofer has a vented core magnet motor structure with extra thick back and top plates. This allows full peak-to-peak voice-coil excursion for deep bass. The cone is an ultra-stiff paper composite with a 3D molded high gloss acrylic dust cap and a high density laminated butyl rubber surround.
Each sub is rated at 1,400 watts peak and 350 watts RMS. The RMS rating is CEA-2031 compliant, so it can be matched with amplifiers that use CEA-compliant ratings.