Alpine X-W12D4 12-Inch Dual 4 Ohm Subwoofer The New X-Series subwoofers were developed from a sound philosophy we call Alpine ID - a focus on highly accurate components built for superior imaging. A triple stacked magnet surrounds an extended voice coil which allows a very long excursion resulting in huge air movement. A specialized CRC pole with integrated cooling fins and an aluminum shorting cap reduce the lag of coil's alternating movement while also providing cooling within the motor.The 24mm Xmax is best in class and allows close to 2 inches of full cone motion. In order to create a powerful yet accurate subwoofer, we had to implement several technologies that keep the cone under control. Dual spiders ensure a rigid moving assembly while the HAMR surround provi. Alpine X-W12D4 12-Inch Dual 4 Ohm Subwoofer. Dual spiders for precision control over the large dynamic range.
Center pole radial heat sink which wicks heat away from the voice coil and transfers it outside the motor, for long term high output. Dual spiders ensure a rigid moving assembly while the HAMR surround provides long linear travel. Taking design cues from tweeter development, we're incorporating a twist-lock trim ring which allows easy attachment of the included metal mesh grill. With a simple twist, the trim ring locks into place, concealing the mounting screws and locking the optional grille into place. 900W RMS, making it a perfect match for the X-Series X-A90M 900W mono amplifier.24mm linear Xmax (1 way), 48 mm peak to peak. Dual spiders for precision control over the large dynamic range. Dual shorting rings for strong motor control ensuring low THD and tight bass. Center pole radial heat sink which wicks heat away from the voice coil and transfers it outside the motor, for long term high output. The biggest HAMR surround yet, for linear cone movement throughout its large range of excursion. Light but rigid pulp/mica cone which allows for highly accurate bass with great natural tone. Twist-lock Trim ring with full mesh grill included. This item is in the category "Consumer Electronics\Vehicle Electronics & GPS\Car Audio\Car Subwoofers". The seller is "creative-car-audio" and is located in this country: US. This item can be shipped to United States.