Mechanical Drawing:

Electro-Acoustic Parameters
1. Rated impedance                                                                                Z:                         8Ω
2. Voice coil resistance                                                                           R:                        7.2Ω  ± 10 %
3. Resonance frequency with 1cc back cavity                                        F0:                       850Hz ± 15 %  
              (measured at 1cc 2Vrms)
4. Measured characteristic sensitivity(at 0.5W in 3.16cm)                                                   100± 3dB
               1cc back cavity average in the frequency range:                                                    2kHz
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)                                                                          0.5W(RMS)
(pink noise, 2nd order high pass filtered, -3dB at 800Hz, crest factor 2)