Thiele/Small Parameters

48CWRT672

Re
3.995
Ohm
electrical voice coil resistance at DC
Krm
0.00245
Ohm
WRIGHT inductance model
Erm
0.87
WRIGHT inductance model
Kxm
0.01425
Ohm
WRIGHT inductance model
Cmes
449.04
µF
electrical capacitance representing moving mass
Lces
18.985
mH
electrical inductance representing driver compliance
Res
78.76
Ohm
resistance due to mechanical losses
fs
54.5
Hz
driver resonance frequency
Mms
37.288
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
35.677
g
mechanical mass of voice coil and diaphragm without air load
Rms
1.0565
kg/s
mechanical resistance of total-driver losses
Cms
0.2285
mm/N
mechanical compliance of driver suspension
Kms
4.375
N/mm
mechanical stiffness of driver suspension
Bl
9.113
Tm
force factor (Bl product)
Lambda
0.088
suspension creep factor
Qtp
0.6355
total Q-factor considering all losses
Qms
12.108
mechanical Q-factor of driver in free air considering Rms only
Qes
0.615
electrical Q-factor of driver in free air considering Re only
Qts
0.585
total Q-factor considering Re and Rms only
Vas
5.19175
I
equivalent air volume of suspension
n0
0.1315
%
reference efficiency (2 pi-radiation using Re)
Lm
83.39
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
83.39
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
Sd
126.68
cm²
diaphragm area
Xmax
5.1
mm
Xmax (Linear Excursion)