Sundown Audio SD3 Series Subwoofers

Shallow Mount Subs Available in 8″, 10″ and 12″

The SD-3 series truly is a world-class sound quality woofer with low mounting depth, small box requirements, and a reasonable price. This line features an under-hung motor topology – this means that the voice coil is shorter than the top plate so the amount of winding in the gap doesn’t change at all over the center portion of stroke – in this case featuring a 1” thick top plate and ½” long 8-layer copper voice coil. This allows for 14.5mm linear excursion one-way while maintaining an extremely flat BL curve. The large inverted rubber surround & high-stroke spider also allow for a very even compliance curve over the full range allowed by the SD-3 series.

  • Xmax = 14.5mm one-way by 70% BL
  • RMS Power = 500-watts (300-watts for the 8” model)
  • Under-Hung low distortion motor topology
  • Solid pole piece with chamfered edges
  • Black Aluminum 2.5” voice coil former for superior heat dissipation
  • High Temperature 8-Layer copper voice coil wire
  • Large aluminum faraday ring (Magnet ID)
  • Spring Loaded Terminals
  • Stitched-On Tinsel Lead Wires
  • Optimized for small sealed enclosures
  • Inverted Rubber Surround to reduce front-mount depth
  • High strength cast aluminum frames (8” model features US Patent D691595)

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