Thiele/Small Parameters

44CWCS84

Re
4
Ohm
electrical voice coil resistance at DC
Krm
0.00235
Ohm
WRIGHT inductance mode
Erm
0.915
WRIGHT inductance mode
Kxm
0.0158
Ohm
WRIGHT inductance mode
Exm
0.79
WRIGHT inductance mode
Cmes
651.03
µF
electrical capacitance representing moving mass
Lces
23.43
mH
electrical inductance representing driver compliance
Res
85.045
Ohm
resistance due to mechanical losses
fs
40.75
Hz
driver resonance frequency
Mms
61.1515
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
57.9295
g
mechanical mass of voice coil and diaphragm without air load
Rms
1.105
kg/s
mechanical resistance of total-driver losses
Cms
0.2495
mm/N
mechanical compliance of driver suspension
Kms
4.015
N/mm
mechanical stiffness of driver suspension
Bl
9.692
Tm
force factor (Bl product)
Lambda
0.045
suspension creep factor
Qtp
0.694
total Q-factor considering all losses
Qms
14.1885
mechanical Q-factor of driver in free air considering Rms only
Qes
0.6675
electrical Q-factor of driver in free air considering Re only
Qts
0.6375
total Q-factor considering Re and Rms only
Vas
14.2692
I
equivalent air volume of suspension
n0
0.1395
reference efficiency (2 pi-radiation using Re)
Lm
83.64
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
83.635
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
rmse Z
3.79
root-mean-square fitting error of driver impedance Z(f)
rmse Hx
1.835
root-mean-square fitting error of transfer function Hx (f)
Sd
201.06
cm²
diaphragm area
Xmax
8.6
mm