Filter Filters Harmony Audio $500 and above Remove All Filters Condition New (13) Refurbished (1) Size 10" (2) 12" (2) 15" (2) 18" (2) Harmony Audio HA-ML181 Competition SPL 18" Sub Subwoofer Bundle with... $560.99 Harmony Audio HA-ML151 Loaded 15" Sub 3200W Ported SPL Sub Box & Harmony... $635.99 Compatible with 2002-2018 Dodge Ram Quad or Crew Kicker CompR CWR10 Dual 10"... $525.99 Compatible with 2002-2018 Dodge Ram Quad or Crew Truck Alpine Type S S-W10D2... $515.99 Compatible with 2001-2014 Ford F250 F350 Super Crew Truck Kicker CompVT CVT12... $544.99 Harmony Audio HA-ML181 Competition SPL 18" Sub Subwoofer Bundle with Kicker... $599.99 8x Harmony Audio HA-C152 Car Competition 15" Sub 2800W Dual 2 Ohm Subwoofer New $1430.99 2x Harmony HA-ML181 Monolith 18" Competition SPL Sub 3500W Dual 1 Ohm Subwoofer $724.99 4x Harmony HA-ML182 Monolith 18" Competition SPL Sub 3500W Dual 2 Ohm Subwoofer $1420.99 2x Harmony HA-ML122 Monolith 12" Competition SPL Sub 3000W Dual 2 Ohm Subwoofer $589.99 4x Harmony HA-ML121 Monolith 12" Competition SPL Sub 3000W Dual 1 Ohm Subwoofer $1174.99 4x Harmony HA-ML151 Monolith 15" Competition SPL Sub 3200W Dual 1 Ohm Subwoofer $1300.99 4x Harmony Audio HA-C104 Car Competition 10" Sub 2000W Dual 4 Ohm Subwoofer New $580.99 4x Harmony Audio HA-C102 Car Competition 10" Sub 2000W Dual 2 Ohm Subwoofer New $554.99