Thiele/Small Parameters

48CWRT672

Re
3.85
Ohm
electrical voice coil resistance at DC
Krm
0.00155
Ohm
WRIGHT inductance model
Erm
0.905
WRIGHT inductance model
Kxm
0.01125
Ohm
WRIGHT inductance model
Exm
0.78
WRIGHT inductance model
Cmes
604.74
µF
electrical capacitance representing moving mass
Lces
10.07
mH
electrical inductance representing driver compliance
Res
46.755
Ohm
resistance due to mechanical losses
fs
64.5
Hz
driver resonance frequency
Mms
43.38
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
41.769
g
mechanical mass of voice coil and diaphragm without air load
Rms
1.535
kg/s
mechanical resistance of total-driver losses
Cms
0.1405
mm/N
mechanical compliance of driver suspension
Kms
7.14
N/mm
mechanical stiffness of driver suspension
Bl
8.4695
Tm
force factor (Bl product)
Lambda
0.088
suspension creep factor
Qtp
0.9445
total Q-factor considering all losses
Qms
11.462
mechanical Q-factor of driver in free air considering Rms only
Qes
0.9435
electrical Q-factor of driver in free air considering Re only
Qts
0.8715
total Q-factor considering Re and Rms only
Vas
3.18815
I
equivalent air volume of suspension
n0
0.0875
reference efficiency (2 pi-radiation using Re)
Lm
81.605
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
81.775
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
rmse Z
3.285
root-mean-square fitting error of driver impedance Z(f)
rmse Hx
2.87
root-mean-square fitting error of transfer function Hx (f)
Sd
126.68
cm²
diaphragm area
Xmax
6.8
mm
Xmax (Linear Excursion)