dB1212 Car Subwoofer from Polk Audio

dB1212 Features:

High Power Handling 360 Watts Continuous and 720 Watts peak.
Side Vented Slot Port provides thunderous bass and allows greater air displacement then round port designs while keeping the enclosure slim.
Extensively Braced ¾” Trapezoidal MDF Enclosure eliminates performance-robbing box flex.
Nickel Plated Heavy Duty Input Terminals accommodate speaker wire up to 8 AWG or twisted pairs of 12 AWG.
Viscoelastic Isolation Damping between the baffle and cabinet prevent any unwanted vibrations or buzzes when the subwoofer is driven hard.
Rugged Automotive Grade Black Carpet provides an attractive and durable enclosure finish.
Heavy Duty Automotive Grade ABS Grille provides awesome looks but also protection for the woofer.
Paintable Grille and Baffle look great as is, or may be matched to your vehicle’s color.
2 Ohm Impedance maximizes amplifier power.
Compact Dimensions fit in virtually any vehicle. dB1212 is 17¼” W x 14¾” H x 17” Deep at the top and 18” Deep at the bottom and weighs 40 lbs.

The dB1212 woofer in the enclosure features:

Klippel Optimized Component Using a state-of-the-art Klippel Distortion Analyzer, Polk engineers were able to optimize the woofer’s motor structure, voice coil alignment and suspension for the best possible performance, even at extreme listening levels.
Dynamic Balance® Composite Woofer Cone feature tremendous stiffness-to-mass ratio. Lower mass means faster transients and finer detail.
High-Roll Santoprene Rubber Surround provides reliability in the temperature extremes of a vehicle.
Fire retardant NOMEX® Inner Suspension increases reliability while providing extended cone travel.