Electro-Acoustic Parameters
1. Rated impedance                                                                                Z:                         4Ω
2. Voice coil resistance                                                                           R:                        4Ω  ± 15 %
3. Resonance frequency                                                                         F0:                       850 ± 20 %
              (measured 1.5Vrms，in free air)
4. Measured characteristic sensitivity                                                                                 86± 3dB    
              (measured at baffle 2Vrms,at 2-3kHz)       
Power Handing
Loudspeaker mounted in lifetime test device (open back cavity, open front)
1. MAX.SHORT TERM POWER (1sec. ON / 60sec. OFF)                                               1.2W(RMS)
(pink noise, 2nd order high pass filtered, -3dB at 1000Hz, crest factor 2)
2. MAX. CONTINUOUS POWER (168h)                                                                            1W(RMS)
(pink noise, 2nd order high pass filtered, -3dB at 1000Hz, crest factor 2)