PR12I120BPR1-C-D Heavy duty 12″ Cast Frame Woofer

      Rubber roll, dual 3″ coil, stacked magnet woofer. 

   PR12G30BPR1 12″ Rubber Roll Woofer

      Versatile 12″ rubber roll woofer, remarkable quality for low cost.

   Acoustic Audio AABASS12 (B.A.S.S. 12) 12-inch woofer

      Inexpensive 12″ 4-ohm rubber roll woofer with treated paper cone,
       92.3 dB sensitivity.