12" Harmony Audio HA-R124 Rhythm Series 12" - Package Sub $71.95 Harmony Audio HA-F124 Car Stereo Flatline Series 12" Sub 800W Single 4 Ohm... $99.95 Harmony Audio HA-A122 Car Stereo Alloy Series 12" Sub 1000W Dual 2 Ohm Subwoofer $84.95 Harmony Audio HA-C122 Car Stereo Competition Carbon 12" Sub 2200W Dual 2 Ohm... $169.95 (3) Harmony Audio HA-C124 Car Stereo Competition Carbon 12" Sub 2200W Dual 4 Ohm... $169.95 (4) Harmony Audio HA-ML122 Monolith 12" Competition Sub 3000W Dual 2 Ohm Subwoofer $309.95 (9) Harmony Audio HA-ML121 Monolith 12" Competition Sub 3000W Dual 1 Ohm Subwoofer $309.95 (1) Harmony Audio HA-R124 Car Stereo Rhythm Series 12" Sub 600W Single 4 Ohm... $67.95 (2) 2x Harmony Audio HA-C124 Car Competition 12" Sub 2200W Dual 4 Ohm Subwoofer New $324.99 (1) 2x Harmony Audio HA-C122 Car Competition 12" Sub 2200W Dual 2 Ohm Subwoofer New $324.99 (1) 2x Harmony HA-ML121 Monolith 12" Competition SPL Sub 3000W Dual 1 Ohm Subwoofer $589.99 2x Harmony HA-ML122 Monolith 12" Competition SPL Sub 3000W Dual 2 Ohm Subwoofer $589.99 Harmony Audio HA-R122 Rhythm Series 12" - Package Sub $71.95 Harmony HA-ML1X12D2 12" Dual 2-OHM Subwoofer Vented Enclosure Box Subpackage $379.95 4x Harmony Audio HA-C124 Car Competition 12" Sub 2200W Dual 4 Ohm Subwoofer New $640.99 4x Harmony Audio HA-C122 Car Competition 12" Sub 2200W Dual 2 Ohm Subwoofer New $640.99 Harmony Audio HA-F124 Car Stereo Flatline Series 12" Sub 800W Single 4 Ohm... $189.99 4x Harmony HA-ML122 Monolith 12" Competition SPL Sub 3000W Dual 2 Ohm Subwoofer $1134.99 Harmony Audio HA-A122 Car Stereo Alloy Series 12" Sub 1000W Dual 2 Ohm... $164.99 4x Harmony HA-ML121 Monolith 12" Competition SPL Sub 3000W Dual 1 Ohm Subwoofer $1174.99 8x Harmony Audio HA-C122 Car Competition 12" Sub 2200W Dual 2 Ohm Subwoofer New $1280.99 8x Harmony Audio HA-C124 Car Competition 12" Sub 2200W Dual 4 Ohm Subwoofer New $1280.99