Filter Filters Single Remove All Filters Price $50-$100 (5) $100-$500 (2) Condition New (7) Brand Harmony Audio (7) Size 10" (3) 12" (3) 15" (1) Sensitivity 86.1dB (1) 87.1 dB (1) 87.1dB (1) 87.3 dB (1) 87.3dB (1) 88.2dB (1) 90.4dB (1) Harmony Audio HA-F124 Car Stereo Flatline Series 12" Sub 800W Single 4 Ohm... $99.95 Harmony Audio HA-F104 Car Stereo Flatline Series 10" Sub 700W Single 4 Ohm... $79.95 Harmony Audio HA-R154 Car Stereo Rhythm Series 15" Sub 900W Single 4 Ohm... $84.95 Harmony Audio HA-R124 Car Stereo Rhythm Series 12" Sub 600W Single 4 Ohm... $67.95 (2) Harmony Audio HA-F124 Car Stereo Flatline Series 12" Sub 800W Single 4 Ohm... $189.99 Harmony Audio HA-F104 Car Stereo Flatline Series 10" Sub 700W Single 4 Ohm... $154.99 Harmony Audio HA-R104 Car Stereo Rhythm Series 10" Sub 500W Single 4 Ohm... $59.95