JVC CSG1210 1200W 12-Inch Single Voice Coil Subwoofer 1,106g (39 oz) Ferrite Magnet Faston Frequency Range: 25 - 2500Hz *1 Sound Pressure Level: 87.5dB/W.m *1 1,106g (39 oz) Ferrite Magnet, Faston^Frequency Range: 25 - 2500Hz *1^Sound Pressure Level: 87.5dB/W.m *1