1210032 ....Brand New Production of Original AR 11" woofer (flat sides), also referred to as a 12" woofer. Used in AR3A, AR9, AR9LSI, AR11.  The woofer has flat sides and is not a standard round frame. 5.25" round magnet with 121003-2 or 1210003-2 or 200083-0 or other designations. This woofer is on a long backorder. In the meantime, you can send to us for refoaming or reconing, or you can order DIY recone kits- AR11 AMRK recone kits  or DIY refoam kits RFK11.