Picture courtesy of Madisound.
Thiele-Small and Impedance Test Results
|Re||6.43||Ohm||electrical voice coil resistance at DC|
|Le||0.042||mH||frequency independent part of voice coil inductance|
|L2||0.299||mH||para-inductance of voice coil|
|R2||2.53||Ohm||electrical resistance due to eddy current losses|
|Cmes||170||µF||electrical capacitance representing moving mass|
|Lces||12.96||mH||electrical inductance representing driver compliance|
|Res||23.69||Ohm||resistance due to mechanical losses|
|fs||107.2||Hz||driver resonance frequency|
|(using test encl.)|
|Mms||2.979||g||mechanical mass of driver diaphragm assembly including air load and voice coil|
|Mmd (Sd)||2.898||g||mechanical mass of voice coil and diaphragm without air load|
|Rms||0.739||kg/s||mechanical resistance of total-driver losses|
|Cms||0.74||mm/N||mechanical compliance of driver suspension|
|Kms||1.35||N/mm||mechanical stiffness of driver suspension|
|Bl||4.185||N/A||force factor (Bl product)|
|Qtp||0.581||total Q-factor considering all losses|
|Qms||2.714||mechanical Q-factor of driver in free air considering Rms only|
|Qes||0.737||electrical Q-factor of driver in free air considering Re only|
|Qts||0.579||total Q-factor considering Re and Rms only|
|Vas||0.7827||l||equivalent air volume of suspension|
|n0||0.126||%||reference efficiency (2 pi-radiation using Re)|
|Lm||83.2||dB||characteristic sound pressure level (SPL at 1m for 1W @ Re)|
|Lnom||81.14||dB||nominal sensitivity (SPL at 1m for 1W @ Zn)|
Large Signal Analysis from Klippel LSI Module
|Displacement Limits||thresholds can be changed in Processing property page|
|X Bl @ Bl min=82%||>3.5||mm||Displacement limit due to force factor variation|
|X C @ C min=75%||2.4||mm||Displacement limit due to compliance variation|
|X L @ Z max=10 %||>3.5||mm||Displacement limit due to inductance variation|
|X d @ d2=10%||9.6||mm||Displacement limit due to IM distortion (Doppler)|
On-Axis merged at approximately 500hz, representing 2.83v/1m. 1/24 octave scaling.
Response comparison at 0, 30, and 60 degrees. 1/24 Octave resolution.
Note: This test was performed in the farfield, and subsequent to environmental issues such as reflections and noise. Therefore, please disregard data below 200hz as I cannot guarantee it’s accuracy.
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