Specifications:
DC Resistance: 19 ohm +/- 10%
Impedance (at 1KHz): 100 ohms+/- 25%
Frequency Range: 2000Hz +/- 20%
S.P.L: >=90dB (at 10cm 2000Hz 9Vp-p Square wave)
>=95dB (at 30cm 1000Hz 12Vp-p Square wave)
Email for details