Thiele/Small Parameters

44CWCS124

Re
3.82
Ohm
electrical voice coil resistance at DC
Krm
0.00345
Ohm
WRIGHT inductance mode
Erm
0.92
WRIGHT inductance mode
Kxm
0.0306
Ohm
WRIGHT inductance mode
Exm
0.74
WRIGHT inductance mode
Cmes
1011.515
µF
electrical capacitance representing moving mass
Lces
25.155
mH
electrical inductance representing driver compliance
Res
86.28
Ohm
resistance due to mechanical losses
fs
31.6
Hz
driver resonance frequency
Mms
133.823
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
119.999
g
mechanical mass of voice coil and diaphragm without air load
Rms
1.534
kg/s
mechanical resistance of total-driver losses
Cms
0.1905
mm/N
mechanical compliance of driver suspension
Kms
5.265
N/mm
mechanical stiffness of driver suspension
Bl
11.5025
Tm
force factor (Bl product)
Lambda
-0.01
suspension creep factor
Qtp
0.817
total Q-factor considering all losses
Qms
17.304
mechanical Q-factor of driver in free air considering Rms only
Qes
0.766
electrical Q-factor of driver in free air considering Re only
Qts
0.7335
total Q-factor considering Re and Rms only
Vas
75.86815
I
equivalent air volume of suspension
n0
0.299
reference efficiency (2 pi-radiation using Re)
Lm
86.955
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
87.16
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
rmse Z
2.28
root-mean-square fitting error of driver impedance Z(f)
rmse Hx
1.725
root-mean-square fitting error of transfer function Hx (f)
Sd
530.93
cm²
diaphragm area
Xmax
10.3
mm