Thiele/Small Parameters

48CWR102

Re
3.76
Ohm
electrical voice coil resistance at DC
Le
3.523
mH
frequency independent part of voice coil inductance
L2
4.989
mH
para-inductance of voice coil
R2
9.06
Ohm
electrical resistance due to eddy current losses
Cmes
634.92
µF
electrical capacitance representing moving mass
Lces
36.36
mH
electrical inductance representing driver compliance
Res
74.93
Ohm
resistance due to mechanical losses
fs
33.1
Hz
driver resonance frequency
Mms
148.587
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
141.302
g
mechanical mass of voice coil and diaphragm without air load
Rms
3.123
kg/s
mechanical resistance of total-driver losses
Cms
0.155
mm/N
mechanical compliance of driver suspension
Kms
6.44
N/mm
mechanical stiffness of driver suspension
Bl
15.298
Tm
force factor (Bl product)
Lambda
0.009
suspension creep factor
Qtp
0.487
total Q-factor considering all losses
Qms
9.902
mechanical Q-factor of driver in free air considering Rms only
Qes
0.497
electrical Q-factor of driver in free air considering Re only
Qts
0.473
total Q-factor considering Re and Rms only
Vas
26.3788
I
equivalent air volume of suspension
n0
0.186
%
reference efficiency (2 pi-radiation using Re)
Lm
84.88
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
85.15
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
rmse Z
3.91
%
root-mean-square fitting error of driver impedance Z(f)
rmse Hx
2.95
%
root-mean-square fitting error of transfer function Hx (f)
Sd
346.36
cm²
diaphragm area
Xmax
14
mm
Xmax (Linear Excursion)