Subwoofer Auto Alpine X-W10D4

OverviewAlpine ID Sound Quality900W RMS, making it a perfect match for the X-Series X-A90M 900W mono amplifier24mm linear Xmax (1 way), 48 mm peak to peakDual spiders for precision control over the large dynamic rangeDual shorting rings for strong motor control ensuring low THD and tight bassCenter pole radial heat sink which wicks heat away from the voice coil and transfers it outside the motor, for long term high outputThe biggest HAMR surround yet, for linear cone movement throughout its large range of excursionLight but rigid pulp/mica cone which allows for highly accurate bass with great natural toneTwist-lock Trim ring with full mesh grill included