Sundown Audio U Series 12" 4 Ohm DVC 1500 Watts RMS Car or Truck Subwoofer U-12-D4 This listing includes: (1) Sundown Audio 12 Subwoofer U-12-D4 The Sundown U Series is the premier standard suspension series. Due to numerous advancements in Sundown's design process the U Series is ...Sundown Audio U Series 12" 4 Ohm DVC 1500 Watts RMS Car or Truck Subwoofer U-12-D4 This listing includes: (1) Sundown Audio 12 Subwoofer U-12-D4 The Sundown U Series is the premier standard suspension series. Due to numerous advancements in Sundown's design process the U Series is able to deliver performance on-par with the Z v.3 series but at a much lower cost.
Sundown Audio started with a double-stacked / 8.66 wide Y35 grade ferrite magnet system coupled to a one-piece, bumped T-Yoke and a 0.6 thick top-plate. Just as with the Z v.3 before it and their other high-end subwoofers they added a very thick (5 mm) aluminum shorting ring inside the magnets to reduce static inductance and level out inductance over stroke. The U series motor also features a 0.6 long pole-extension to keep the coil under control at high levels of excursion.
Features: - Black Aluminum 3 voice coil former for superior heat dissipation - High Temperature Round-Wire CCAW voice coil with high-temp black adhesive - Double stitched surround - Heavy duty cast basket - Spring loaded terminals accept up to 8 gauge - Stitched-on double-XL tinsel leads - Rear vented pole piece - Rear drilled gap-venting - Innovative high-velocity cast aluminum vented frame spacer ring - Magnet ID shorting ring - Top-Plate Cooling Channels - Cast Aluminum surround bolt-on rings - Optimized for small ported or bandpass enclosures SPECIFICATIONS: 1500 Watts RMS Power Linear X-Max by 70% BL: 30 mm one-way Mounting Depth: 7.75" Mounting Diameter: 11.10" Outside Diameter: 12.83" Magnet Diameter: 8.66" RE (ohms): 6.1 FS (Hz): 40.0 Vas (L): 12.3 Qes: 0.38 Qms: 2.93 Qts: 0.34 Le (mH): 3.67 BL (NA): 33.7 Mms (Grams): 284.5 Cms (uM/N): 0.06 Sens (dB @ 1w/1m): 85.0 dB ENCLOSURE SPECIFICATIONS Sealed Enclosure: 1.0 cu ft Ported Enclosure: 2.0 cu ft Recommended Tuning: 35Hz Recommended Port Area: 32 sq in Displacement: 0.21 cu ft Depth: 7.75 Outside Diameter: 12.83 Cut-Out: 11.01