RMS 500 watts Dual 2 or 4 ohm voice coils Black Aluminum 2.5” voice coil former for superior heat dissipation High temperature 4-layer copper voice coil wire Stitched-on “Mini-XL” tinsel Leads to prevent fatigue and failure Vented pole-piece and vented magnetic gap Dual-magnet design for smooth acoustic response Custom tooled cone shape for reduced mechanical noise over high excursion Bolt-through motor design to ensure maximum longevity and ruggedness  The SML series is a revolutionary line of subwoofers offered by Sundown Audio. An inch shallower than our SLD series, it delivers nearly the excursion, making it an ideal choice for customers seeking an extremely shallow driver with deep bass. Designed to fit under or behind your seat, the SML series performs exceptionally well in small enclosures. Specifications T/S SPECS SML 10" D2 SML 10" D4 SML 12" D2 SML 12" D4 RE (Ohms) 3.650 6.850 3.650 6.850 FS (Hz) 35.210 36.116 34.932 39.905 VAS (L) 23.679 24.828 39.012 29.593 Qes 0.931 0.469 0.456 0.617 Qms 2.703 2.766 2.862 3.035 Qts 0.341 0.401 0.394 0.513 BL (NA) 17.431 21.022 17.879 22.801 Mms (Grams) 146.986 133.242 182.067 186.887 Cms (uM/N) 139.003 145.749 114.018 85.771 Sens (dB @ 1w/1m) 86.1dB 85.8dB 87.5dB 86.7dB Xmax 11mm 11mm 11mm 11mm Enclosure Specifications   SML 10" SML 12" Sealed Enclosure 0.5-0.75 ft^3 0.75-1.0 ft^3 Ported Enclosure 1.0-1.25 ft^3 1.25-1.75 ft^3 Recommended Tuning 35hz 35hz Recommended Port Area  15 sq in  15 sq in Mounting Depth 3.78” 4.45” Physical Dimensions Download Download