Thiele/Small Parameters

43CWR154

Re
7.19
Ohm
electrical voice coil resistance at DC
Krm
0.00845
Ohm
WRIGHT inductance mode
Erm
0.96
WRIGHT inductance mode
Kxm
0.07965
Ohm
WRIGHT inductance mode
Exm
0.76
WRIGHT inductance mode
Cmes
376.8
µF
electrical capacitance representing moving mass
Lces
76.26
mH
electrical inductance representing driver compliance
Res
171.625
Ohm
resistance due to mechanical losses
fs
29.7
Hz
driver resonance frequency
Mms
283.6865
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
257.6715
g
mechanical mass of voice coil and diaphragm without air load
Rms
4.3965
kg/s
mechanical resistance of total-driver losses
Cms
0.101
mm/N
mechanical compliance of driver suspension
Kms
9.875
N/mm
mechanical stiffness of driver suspension
Bl
27.44
Tm
force factor (Bl product)
Lambda
-0.034
suspension creep factor
Qtp
0.5655
total Q-factor considering all losses
Qms
12.065
mechanical Q-factor of driver in free air considering Rms only
Qes
0.505
electrical Q-factor of driver in free air considering Re only
Qts
0.485
total Q-factor considering Re and Rms only
Vas
93.8835
I
equivalent air volume of suspension
n0
0.468
reference efficiency (2 pi-radiation using Re)
Lm
88.9
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
89.365
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
rmse Z
3.24
root-mean-square fitting error of driver impedance Z(f)
rmse Hx
2.82
root-mean-square fitting error of transfer function Hx (f)
0
Ohm
resistance of series resistor
Sd
809.28
cm²
diaphragm area
Xmax
14.5
mm