Thiele/Small Parameters

48CWRT124

Re
7.945
Ohm
electrical voice coil resistance at DC
Krm
0.01185
Ohm
WRIGHT inductance model
Erm
0.865
WRIGHT inductance model
Kxm
0.0664
Ohm
WRIGHT inductance model
Exm
0.72
WRIGHT inductance model
Cmes
523.07
µF
electrical capacitance representing moving mass
Lces
52.695
mH
electrical inductance representing driver compliance
Res
84.31
Ohm
resistance due to mechanical losses
fs
30.3
Hz
driver resonance frequency
Mms
192.3315
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
179.443
g
mechanical mass of voice coil and diaphragm without air load
Rms
4.363
kg/s
mechanical resistance of total-driver losses
Cms
0.1435
mm/N
mechanical compliance of driver suspension
Kms
6.98
N/mm
mechanical stiffness of driver suspension
Bl
19.1765
Tm
force factor (Bl product)
Qtp
0.812
total Q-factor considering all losses
Qms
8.399
mechanical Q-factor of driver in free air considering Rms only
Qes
0.7925
electrical Q-factor of driver in free air considering Re only
Qts
0.7235
total Q-factor considering Re and Rms only
Vas
52.05975
I
equivalent air volume of suspension
n0
0.176
%
reference efficiency (2 pi-radiation using Re)
Lm
84.66
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
84.685
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
Sd
506.71
cm²
diaphragm area
Xmax
10.5
mm
Xmax (Linear Excursion)