Alpine SWE-1243 12″ Single-Voice-Coil 4-Ohm Subwoofer for $56.64 Shipped

Alpine SWE-1243 12″ Single-Voice-Coil 4-Ohm Subwoofer for $56.64 shipped after coupon code AFL4COUPON, valid on 9/8 only.  Here is a screenshot for reference.  This subwoofer features up to 750-watt peak power, 2-piece parabolic woven fiber and KEVLAR-reinforced pulp cone, steel frame with 5-leg design and voice-coil venting, and 27Hz to 1kHz frequency response.  Most places have this car stereo for over $70.