Thiele/Small Parameters

44CWCD154

Re
6.72
Ohm
electrical voice coil resistance at DC
Krm
0.0039
Ohm
WRIGHT inductance mode
Erm
0.995
WRIGHT inductance mode
Kxm
0.05225
Ohm
WRIGHT inductance mode
Exm
0.755
WRIGHT inductance mode
Cmes
585.47
µF
electrical capacitance representing moving mass
Lces
60.33
mH
electrical inductance representing driver compliance
Res
225.045
Ohm
resistance due to mechanical losses
fs
26.8
Hz
driver resonance frequency
Mms
223.3185
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
196.319
g
mechanical mass of voice coil and diaphragm without air load
Rms
1.6945
kg/s
mechanical resistance of total-driver losses
Cms
0.158
mm/N
mechanical compliance of driver suspension
Kms
6.32
N/mm
mechanical stiffness of driver suspension
Bl
19.53
Tm
force factor (Bl product)
Lambda
0.0105
suspension creep factor
Qtp
0.702
total Q-factor considering all losses
Qms
22.169
mechanical Q-factor of driver in free air considering Rms only
Qes
0.6615
electrical Q-factor of driver in free air considering Re only
Qts
0.6425
total Q-factor considering Re and Rms only
Vas
154.04705
I
equivalent air volume of suspension
n0
0.43
reference efficiency (2 pi-radiation using Re)
Lm
88.535
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
89.29
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
rmse Z
3.37
root-mean-square fitting error of driver impedance Z(f)
rmse Hx
1.27
root-mean-square fitting error of transfer function Hx (f)
Sd
829.58
cm²
diaphragm area
Xmax
13.5
mm