Thiele/Small Parameters

45L7R102

Re
3.48
Ohm
electrical voice coil resistance at DC
Krm
0.00765
Ohm
WRIGHT inductance mode
Erm
0.895
WRIGHT inductance mode
Kxm
0.0561
Ohm
WRIGHT inductance mode
Exm
0.725
WRIGHT inductance mode
Cmes
669.6
µF
electrical capacitance representing moving mass
Lces
39.135
mH
electrical inductance representing driver compliance
Res
58.22
Ohm
resistance due to mechanical losses
fs
31.1
Hz
driver resonance frequency
Mms
200.84058
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
190.6715
g
mechanical mass of voice coil and diaphragm without air load
Rms
5.1555
kg/s
mechanical resistance of total-driver losses
Cms
0.1305
mm/N
mechanical compliance of driver suspension
Kms
7.67
N/mm
mechanical stiffness of driver suspension
Bl
17.319
Tm
force factor (Bl product)
Lambda
0.0355
suspension creep factor
Qtp
0.529
total Q-factor considering all losses
Qms
7.6155
mechanical Q-factor of driver in free air considering Rms only
Qes
0.455
electrical Q-factor of driver in free air considering Re only
Qts
0.4295
total Q-factor considering Re and Rms only
Vas
34.57385
I
equivalent air volume of suspension
n0
0.2195
reference efficiency (2 pi-radiation using Re)
Lm
85.61
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
86.22
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
rmse Z
2.25
root-mean-square fitting error of driver impedance Z(f)
rmse Hx
1.86
root-mean-square fitting error of transfer function Hx (f)
Sd
432.64
cm²
diaphragm area
Xmax
13.9
mm