Rated Impedance: 8Ω± 15%
Rated Power: 15 W
Max. Power: 30 W
Resonance Frequency: 350 Hz ± 20%
Whistling: 2.8 Volts  
D.C Resistance (Rdc): 7.2 Ω± 10 %
Magnet: 24.5*3.5mm (Neodymium)
Dimension: 63 ^L x 53 ^w x 34 ^D mm
Weight: 80 gram