Thiele/Small Parameters

48CWR152

Re
3.77
Ohm
electrical voice coil resistance at DC
Krm
0.0054
Ohm
WRIGHT inductance model
Erm
0.95
WRIGHT inductance model
Kxm
0.0413
Ohm
WRIGHT inductance model
Exm
0.78
WRIGHT inductance model
Cmes
650.19
µF
electrical capacitance representing moving mass
Lces
48.73
mH
electrical inductance representing driver compliance
Res
107.46
Ohm
resistance due to mechanical losses
fs
28.3
Hz
driver resonance frequency
Mms
302.097
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
276.082
g
mechanical mass of voice coil and diaphragm without air load
Rms
4.324
kg/s
mechanical resistance of total-driver losses
Cms
0.105
mm/N
mechanical compliance of driver suspension
Kms
9.53
N/mm
mechanical stiffness of driver suspension
Bl
21.555
Tm
force factor (Bl product)
Lambda
-0.033
suspension creep factor
Qtp
0.499
total Q-factor considering all losses
Qms
12.412
mechanical Q-factor of driver in free air considering Rms only
Qes
0.435
electrical Q-factor of driver in free air considering Re only
Qts
0.420
total Q-factor considering Re and Rms only
Vas
97.2184
I
equivalent air volume of suspension
n0
0.486
%
reference efficiency (2 pi-radiation using Re)
Lm
89.06
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
89.32
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
rmse Z
2.56
%
root-mean-square fitting error of driver impedance Z(f)
rmse Hx
3.02
%
root-mean-square fitting error of transfer function Hx (f)
Sd
809.28
cm²
diaphragm area
Xmax
14.5
mm
Xmax (Linear Excursion)