Voice Coil Freq.rest 1" ASV, 4 ohms 45-4000Hz 87dB 100W 8" Rubber edge, PP cone SW8015-62 1.5" ASV, 4 ohms 38-3500Hz 88dB 150W 10" Rubber edge, PP cone SW1017-62 2" ASV, 4 ohms 30-800Hz 89dB 300W 12" Rubber edge, PP cone SW1218-62