Filter Filters 86.9dB Remove All Filters Price $100-$500 (2) Condition New (2) Brand Harmony Audio (2) Size 15" (2) Voice Coils Dual (2) Harmony Audio HA-ML151 Monolith 15" Competition Sub 3200W Dual 1 Ohm Subwoofer $339.95 Harmony Audio HA-ML152 Monolith 15" Competition Sub 3200W Dual 2 Ohm Subwoofer $339.95 (6)