[Rafael]

Siemens а-ля Klangfilm 307 на спайдере:
fs 95,4 Hz free air resonance frequency
Zmax 166,1 Ohm impedance at resonant frequency
Rdc 11,5 Ohm DC-resistance
Qms 7,66 mechanical Q of the speaker
Qel 0,57 electrical Q of the speaker
Qts 0,53 total Q of the speaker