Sundown Audio SML-12-D4 12" 500W 4-Ohm Shallow Subwoofer

Product Description SML-12-D4 | Sundown Audio 12" D4 500W Shallow Subwoofer FEATURES: Xmax = 11mm one-way by 70% BLXmech is a hard limit of 25mm one-way for 12s and 20mm one-way for 10sRMS Power = 500-wattsBlack Aluminum 2.5” voice coil former for superior heat dissipationHigh Temperature 4-Layer copper voice coil wireStitched-On “Mini-XL” Tinsel Leads to prevent fatigue and failureVented Pole-Piece and Multi-Vented Magnetic GapDual-Magnet Design for appropriate motor force factor and mid QTSCustom tooled cone shape for reduced mechanical noise over high excursionBolt-through motor design to ensure maximum longevity and ruggedness against mechanical failures** This motor is bolted through the top so the bolts are not visible from the back like several other models.Magnet ID shorting ring SPECIFICATIONS: RE (Ohms) 3.650FS (Hz) 34.932VAS (L) 39.012Qes 0.456Qms 2.862Qts 0.394BL (NA) 17.879Mms (Grams) 182.067Cms (uM/N) 114.018Sens (dB @ 1w/1m) 87.5dB Enclosure Specifications: Sealed Enclosure 0.75-1.0 ft^3Ported Enclosure 1.25-1.75 ft^3Recommended Tuning 35hzRecommended Port AreaMounting Depth 4.45”