10" Harmony Audio HA-R104 Rhythm Series 10" - Package Sub $62.95 Harmony Audio HA-F104 Car Stereo Flatline Series 10" Sub 700W Single 4 Ohm... $79.95 Harmony Audio HA-A102 Car Stereo Alloy Series 10" Sub 800W Dual 2 Ohm Subwoofer $79.95 Harmony Audio HA-R104 Car Stereo Rhythm Series 10" Sub 500W Single 4 Ohm... $59.95 Harmony Audio HA-C102 Car Stereo Competition Carbon 10" Sub 2000W Dual 2 Ohm... $149.95 (1) Harmony Audio HA-C104 Car Stereo Competition Carbon 10" Sub 2000W Dual 4 Ohm... $149.95 (1) 2x Harmony Audio HA-C104 Car Competition 10" Sub 2000W Dual 4 Ohm Subwoofer New $284.99 2x Harmony Audio HA-C102 Car Competition 10" Sub 2000W Dual 2 Ohm Subwoofer New $284.99 4x Harmony Audio HA-C102 Car Competition 10" Sub 2000W Dual 2 Ohm Subwoofer New $554.99 8x Harmony Audio HA-C102 Car Competition 10" Sub 2000W Dual 2 Ohm Subwoofer New $1079.99 Harmony Audio HA-F104 Car Stereo Flatline Series 10" Sub 700W Single 4 Ohm... $154.99 Harmony Audio HA-A102 Car Stereo Alloy Series 10" Sub 800W Dual 2 Ohm... $189.99 4x Harmony Audio HA-C104 Car Competition 10" Sub 2000W Dual 4 Ohm Subwoofer New $580.99 8x Harmony Audio HA-C104 Car Competition 10" Sub 2000W Dual 4 Ohm Subwoofer New $1130.99