Thiele/Small Parameters

45L7R124

Re
6.885
Ohm
electrical voice coil resistance at DC
Krm
0.01415
Ohm
WRIGHT inductance mode
Erm
0.885
WRIGHT inductance mode
Kxm
0.08725
Ohm
WRIGHT inductance mode
Exm
0.73
WRIGHT inductance mode
Cmes
444.565
µF
electrical capacitance representing moving mass
Lces
63.655
mH
electrical inductance representing driver compliance
Res
98.32
Ohm
resistance due to mechanical losses
fs
29.9
Hz
driver resonance frequency
Mms
236.4885
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
217.971
g
mechanical mass of voice coil and diaphragm without air load
Rms
5.4835
kg/s
mechanical resistance of total-driver losses
Cms
0.1195
mm/N
mechanical compliance of driver suspension
Kms
8.36
N/mm
mechanical stiffness of driver suspension
Bl
23.065
Tm
force factor (Bl product)
Lambda
0.059
suspension creep factor
Qtp
0.642
total Q-factor considering all losses
Qms
8.2155
mechanical Q-factor of driver in free air considering Rms only
Qes
0.5755
electrical Q-factor of driver in free air considering Re only
Qts
0.5375
total Q-factor considering Re and Rms only
Vas
70.52065
I
equivalent air volume of suspension
n0
0.3155
reference efficiency (2 pi-radiation using Re)
Lm
87.19
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
87.84
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
rmse Z
2.41
root-mean-square fitting error of driver impedance Z(f)
rmse Hx
1.435
root-mean-square fitting error of transfer function Hx (f)
Sd
645.17
cm²
diaphragm area
Xmax
13.9
mm