# Power : T2512( 12" x2) 360-720W 4 ohm T2515( 15" x2) 500-1000W 4 ohm # Frequency response : 40-20K HZ # Sensitivity : 90+ -3 DB # Material: 15mm professional wood+ steel grill+ PVC finished on side # Packing T2512= = 0.188 CBM/ PC 75 PAIR/ 20' 125 PAIR/ 40' 180 PAIR/ 40HQ T2515= = 0.31 CBM/ PC 45 PAIR/ 20' 75 PAIR/ 40' 110 PAIR/ 40HQ