Re
3.97
Ohm
electrical voice coil resistance at DC
Krm
0.0018
Ohm
WRIGHT inductance model
Erm
0.93
WRIGHT inductance model
Kxm
0.0127
Ohm
WRIGHT inductance model
Exm
0.81
WRIGHT inductance model
Cmes
588.70
µF
electrical capacitance representing moving mass
Lces
24.90
mH
electrical inductance representing driver compliance
Res
50.92
Ohm
resistance due to mechanical losses
fs
39.8
Hz
driver resonance frequency
Mechanical Parameters (using laser)
Mms
57.954
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
54.485
g
mechanical mass of voice coil and diaphragm without air load
Rms
1.933
kg/s
mechanical resistance of total-driver losses
Cms
0.253
mm/N
mechanical compliance of driver suspension
Kms
3.95
N/mm
mechanical stiffness of driver suspension
Bl
9.922
Tm
force factor (Bl product)
Qtp
0.609
total Q-factor considering all losses
Qms
7.828
mechanical Q-factor of driver in free air considering Rms only
Qes
0.610
electrical Q-factor of driver in free air considering Re only
Qts
0.566
total Q-factor considering Re and Rms only
Vas
15.9758
l
equivalent air volume of suspension
n0
0.181
%
reference efficiency (2 pi-radiation using Re)
Lm
84.77
dB
characteristic sound pressure level (at 1 m for 1 W @ Re)
Lnom
84.81
dB
nominal sensitivity (SPL at 1 m for 1 W @ Zn)
Sd
211.24
cm²
diaphragm area