Filter Filters Dual Rockford Fosgate Remove All Filters Price $50-$100 (1) $100-$500 (2) Condition New (3) Size 12" (2) 10" (1) Sensitivity 81-85 dB (1) 86-90 dB (2) Receiver Size Yes 10-7-2015 (3) Rockford Fosgate R2SD4-12 12" Prime R2 4-Ohm DVC Shallow Subwoofer $159.99 Rockford Fosgate R2D4-12 12" Prime R2 4-Ohm DVC Subwoofer Car Audio Sub Speaker $104.99 Rockford Fosgate R2D4-10 10" Prime R2 4-Ohm DVC Subwoofer Car Audio Sub Speaker $94.99