
Sundown Audio SML12D4 12" 500W RMS Dual 2-Ohm Voice Coil Shallow Mount Subwoofer
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Compared across 2 stores. Prices are checked against each store and labelled with when.

Compared across 2 stores. Prices are checked against each store and labelled with when.
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The Sundown Audio SML12D4 is a 12-inch shallow-mount subwoofer built for tight spaces. It handles 500 watts RMS with dual 4-ohm voice coils, a 13mm one-way Xmax and a vented, FEA-optimized motor with shorting rings. Its 4.44-inch mounting depth and 18.2-pound build let it fit behind seats and in shallow boxes where full-depth subs won't go. Compared with mainstream shallow subs, it targets higher power handling and excursion, so it suits people who want real output from a compact enclosure rather than a basic factory upgrade.
In stockSold by D-C-OReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
Availability unknown
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Lowest price we've seen: $249.99 on Nov 12 at Amazon. Tracked across 1 store since Nov 12.
Owners of Sundown shallow subs generally praise output and build for the size, and the SML line is treated as a serious shallow option rather than a budget placeholder.
This is a 12-inch shallow-mount subwoofer rated at 500 watts RMS. It has dual voice coils and a mount depth of 4.44 inches.
The motor has a double stacked main magnet and a single stacked secondary magnet. The motor gap is fully FEA-optimized and vented for cooling, and full magnet ID shorting rings are fitted. The motor structure is bolted to prevent motor shift.
The frame is high-strength stamped steel. The subwoofer has beefy flat tinsel leads and spring-loaded terminals.








