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A highly efficient 4" speaker, the Tang Band W4-1052SDF offers great bass extension and smooth frequency response. The unique ultra-thin polypropylene cone maintains strength via special ridges on its surface, while still having very low moving mass. A long 1" diameter voice coil, rubber surround, high-energy ceramic ferrite motor, and phase plug allow good use of this driver's 4 mm of Xmax. The W4-1052SDF's 4 ohm impedance is great for automotive use or high-sensitivity designs.
An enclosure that is .18 cubic feet with a 1.5" x 4" port will give you optimal results and a tuning frequency of 70 Hz.
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