Filter Filters Harmony Audio Remove All Filters Price Under $50 (2) $50-$100 (76) $100-$500 (1152) $500 and above (355) Condition New (1557) Refurbished (28) Size 12" (65) 10" (53) 15" (43) 18" (8) 8" (2) Voice Coils Dual (18) Dual 2 Ohm (1) Single (10) Single 2 Ohm (2) Amplifier Class Class D (1) Stable to (Ohm) 1 Ohm (1) Make Cadillac (3) Chevy (103) Dodge (13) Ford (119) GMC (63) Honda (19) Infiniti (9) Jeep (2) Nissan (2) Show More Toyota (11) Model F-150 (85) Silverado (60) Sierra (59) Mustang (21) Avalanche (21) S2000 (17) Ram Truck (13) Tacoma (11) Camaro (10) Show More F-250 / 350 / 450 / 550 (10) G35 Coupe (9) CK Pickup (6) S-10 Truck (4) Escalade EXT (3) Ranger (3) Wrangler (2) Ridgeline (2) Colorado (2) Canyon (2) Envoy (1) Sonoma (1) Titan (1) 350Z (1) Sensitivity 83.1dB (2) 84 dB (1) 84dB (1) 85.7dB (2) 86.1dB (2) 86.9dB (2) 87 dB (1) 87.1 dB (1) 87.1dB (1) 87.3 dB (1) 87.3dB (1) 87.dB (1) 87dB (1) 88.2dB (4) 88.4dB (2) 88.6dB (2) 88.7dB (2) 89.4 dB (1) 89.4dB (1) 90.4dB (1) 91.2dB (1) Channels 1 (1) Fixture Type Dual (51) Single (44) Bundled Items Harmony Audio (1) Not Applicable (1) 4x Harmony HA-ML151 Monolith 15" Competition SPL Sub 3200W Dual 1 Ohm Subwoofer $1300.99 Harmony Audio HA-ML182 Monolith 18" Competition Sub 3500W Dual 2 Ohm Subwoofer $379.95 (2) Harmony Audio HA-C124 Car Stereo Competition Carbon 12" Sub 2200W Dual 4 Ohm... $169.95 (4) Harmony Audio HA-R124 Car Stereo Rhythm Series 12" Sub 600W Single 4 Ohm... $67.95 (2) Harmony Audio HA-ML122 Monolith 12" Competition Sub 3000W Dual 2 Ohm Subwoofer $309.95 (9) Harmony Audio HA-ML152 Monolith 15" Competition Sub 3200W Dual 2 Ohm Subwoofer $339.95 (6) Harmony Audio HA-ML121 Monolith 12" Competition Sub 3000W Dual 1 Ohm Subwoofer $309.95 (1) Harmony Audio HA-F124 Car Stereo Flatline Series 12" Sub 800W Single 4 Ohm... $99.95 Harmony Audio HA-A102 Car Stereo Alloy Series 10" Sub 800W Dual 2 Ohm Subwoofer $79.95 Harmony Audio HA-C102 Car Stereo Competition Carbon 10" Sub 2000W Dual 2 Ohm... $149.95 (1) Harmony Audio HA-C122 Car Stereo Competition Carbon 12" Sub 2200W Dual 2 Ohm... $169.95 (3) Harmony Audio R104 Triple 10" Subwoofer Loaded 1500 Watt Sub Box & CXA800.1 Amp $490.99 Harmony Audio R124 Triple 12" Subwoofer Loaded 1800 Watt Sub Box & CXA800.1 Amp $535.99 Harmony Audio R124 Triple 12" Subwoofer Loaded 1800 Watt Sub Box & Harmony... $449.99 Harmony Audio A122 Triple 12" Subwoofer Loaded 3000 Watt Sub Box & CX1200.1 Amp $621.99 Harmony Audio HA-R154 Car Stereo Rhythm Series 15" Sub 900W Single 4 Ohm... $84.95 4x Harmony HA-ML121 Monolith 12" Competition SPL Sub 3000W Dual 1 Ohm Subwoofer $1174.99 Harmony Audio A122 Triple 12" Subwoofer Loaded 3000 Watt Sub Box & Harmony... $555.99 Compatible with 2002-2018 Dodge Ram Quad or Crew Kicker CompR CWR10 Dual 10"... $481.99 Harmony Audio A102 Triple 10" Subwoofer Loaded 2400 Watt Sub Box & CX1200.1 Amp $549.99 Harmony Audio A102 Triple 10" Subwoofer Loaded 2400 Watt Sub Box & Harmony... $504.99 Harmony Audio R104 Triple 10" Subwoofer Loaded 1500 Watt Sub Box & Harmony... $405.99 Harmony HA-ML1X15D2 15" Dual 2-OHM Subwoofer Vented Enclosure Box Subpackage $409.95 4x Harmony Audio HA-C122 Car Competition 12" Sub 2200W Dual 2 Ohm Subwoofer New $640.99 123456...66