Filter Filters 12" $500 and above Remove All Filters Condition New (3) Brand Harmony Audio (2) Alpine (1) Voice Coils 2 Ohm (1) 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