Thiele/Small Parameters

44CWCD124

Re
7.425
Ohm
electrical voice coil resistance at DC
Krm
0.0049
Ohm
WRIGHT inductance mode
Erm
0.945
WRIGHT inductance mode
Kxm
0.04725
Ohm
WRIGHT inductance mode
Exm
0.745
WRIGHT inductance mode
Cmes
563.06
µF
electrical capacitance representing moving mass
Lces
41.755
mH
electrical inductance representing driver compliance
Res
148.56
Ohm
resistance due to mechanical losses
fs
32.85
Hz
driver resonance frequency
Mms
132.2595
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
118.4355
g
mechanical mass of voice coil and diaphragm without air load
Rms
1.5835
kg/s
mechanical resistance of total-driver losses
Cms
0.178
mm/N
mechanical compliance of driver suspension
Kms
5.635
N/mm
mechanical stiffness of driver suspension
Bl
15.325
Tm
force factor (Bl product)
Lambda
-0.0165
suspension creep factor
Qtp
0.8995
total Q-factor considering all losses
Qms
17.2655
mechanical Q-factor of driver in free air considering Rms only
Qes
0.8625
electrical Q-factor of driver in free air considering Re only
Qts
0.8215
total Q-factor considering Re and Rms only
Vas
71.00065
I
equivalent air volume of suspension
n0
0.28
reference efficiency (2 pi-radiation using Re)
Lm
86.665
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
86.99
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
rmse Z
2.205
root-mean-square fitting error of driver impedance Z(f)
rmse Hx
2.295
root-mean-square fitting error of transfer function Hx (f)
Sd
530.93
cm²
diaphragm area
Xmax
10.3
mm