Parameters Model No.:JUa15 Single 15"-2Way Loudspeaker Frequency: 45Hz-20KHz Normal Impedance: 8Ohm SPL 99dB/W/M RMS/Musical/Max.Power: 300W/600W/1200W Durable & Thick leatheroid protection for 15mm MDF wooden cabinet Heavy duty metal handle Steel grill 1.74" Titanium tweeter driver 15inch long-throw composite woofer 35mm metal pole mount built-in Floor cushion for speaker stand Size (W*D*H): 46.5×52.5×81cm Model No.:JUa215 Dual 15"-2Way Loudspeaker Frequency: 45Hz-20KHz Normal Impedance: 4Ohm SPL 96dB/W/M RMS/Musical/Max.Power: 400W/800W/1600W Durable & Thick leatheroid protection for 15mm MDF wooden cabinet Heavy duty metal handle Steel grill 1.74" Titanium tweeter driver Dual 15inch long-throw composite woofer Floor cushion for speaker stand Size (W*D*H): 46.5×52.5×120cm