Mechanical Drawing:

Electro-Acoustic Parameters
1. Rated impedance                                                                                Z:                       6Ω
2. Voice coil resistance                                                                           R:                       5.4Ω   ± 10 %
3. Resonance frequency                                                                        F0:                       900Hz ± 15 %  
              (measured at 1ccm 2.05Vrms)
4. Nominal characteristic sensitivity (calculated for 1W 1m)                                           72dB (typical)
              1cc back cavity  at the frequency range:                                                             2k~5kHz
5. Measured characteristic sensitivity (at 0.7W in 3.16cm)                                               100 ± 3dB
1cc back cavity  at the frequency range:                                                                           2k~5kHz
Power Handing
Loudspeaker mounted in lifetime test device (1ccm back cavity, open front)
1. MAX.SHORT TERM POWER (1sec. ON / 60sec. OFF)                                            1W (RMS)
(pink noise, 2nd order high pass filtered, -3dB at 800Hz, crest factor 2)
2. MAX. CONTINUOUS POWER (168h)                                                                       0.7W (RMS)
(pink,noise, 2nd order high pass filterde, -3dB at 800Hz, crest factor 2)