Filter Filters 12" Rockford Fosgate Remove All Filters Price $100-$500 (1) Condition New (1) Voice Coils Dual (1) Sensitivity 86-90 dB (1) Receiver Size Yes 10-7-2015 (1) Rockford Fosgate R2D4-12 12" Prime R2 4-Ohm DVC Subwoofer Car Audio Sub Speaker $104.99