Thiele/Small Parameters

45L7R104

Re
6.765
Ohm
electrical voice coil resistance at DC
Krm
0.00945
Ohm
WRIGHT inductance mode
Erm
0.925
WRIGHT inductance mode
Kxm
0.08275
Ohm
WRIGHT inductance mode
Exm
0.73
WRIGHT inductance mode
Cmes
329.79
µF
electrical capacitance representing moving mass
Lces
74.605
mH
electrical inductance representing driver compliance
Res
105.98
Ohm
resistance due to mechanical losses
fs
32.05
Hz
driver resonance frequency
Mms
176.048
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
165.879
g
mechanical mass of voice coil and diaphragm without air load
Rms
5.0365
kg/s
mechanical resistance of total-driver losses
Cms
0.1395
mm/N
mechanical compliance of driver suspension
Kms
7.155
N/mm
mechanical stiffness of driver suspension
Bl
23.104
Tm
force factor (Bl product)
Lambda
0.052
suspension creep factor
Qtp
0.4975
total Q-factor considering all losses
Qms
7.0465
mechanical Q-factor of driver in free air considering Rms only
Qes
0.45
electrical Q-factor of driver in free air considering Re only
Qts
0.423
total Q-factor considering Re and Rms only
Vas
37.0217
I
equivalent air volume of suspension
n0
0.2615
reference efficiency (2 pi-radiation using Re)
Lm
86.375
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
87.105
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
rmse Z
2.285
root-mean-square fitting error of driver impedance Z(f)
rmse Hx
1.6
root-mean-square fitting error of transfer function Hx (f)
Sd
432.64
cm²
diaphragm area
Xmax
13.9
mm