R2904/700000

Characteristic sensitivity (2.83V / 1m) : 94.5 dB
Recommended frequency range : 2 - 40 kHz
Free air resonance frequency, fs : 520 Hz
DC resistance, Re : 3.0 ohm
Voice coil inductance, Le : 0.01 mH
Effective piston area, Sd : 5.6 cm²
Moving mass incl. air, md : 0.30 g
Force factor, BL : 2.8 Tm
Excursion, lin./max. : ±0.20 / ±1.6 mm
Voice coil diameter : 25 mm
Net weight : 0.42 kg