Thiele/Small Parameters

45L7R154

Re
7.37
Ohm
electrical voice coil resistance at DC
Krm
0.025
Ohm
WRIGHT inductance mode
Erm
0.86
WRIGHT inductance mode
Kxm
0.1526
Ohm
WRIGHT inductance mode
Exm
0.695
WRIGHT inductance mode
Cmes
590.03
µF
electrical capacitance representing moving mass
Lces
82.545
mH
electrical inductance representing driver compliance
Res
90.33
Ohm
resistance due to mechanical losses
fs
22.8
Hz
driver resonance frequency
Mms
404.502
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
366.328
g
mechanical mass of voice coil and diaphragm without air load
Rms
7.6125
kg/s
mechanical resistance of total-driver losses
Cms
0.1205
mm/N
mechanical compliance of driver suspension
Kms
8.325
N/mm
mechanical stiffness of driver suspension
Bl
26.201
Tm
force factor (Bl product)
Lambda
0.049
suspension creep factor
Qtp
0.7045
total Q-factor considering all losses
Qms
7.638
mechanical Q-factor of driver in free air considering Rms only
Qes
0.623
electrical Q-factor of driver in free air considering Re only
Qts
0.5755
total Q-factor considering Re and Rms only
Vas
186.2436
I
equivalent air volume of suspension
n0
0.341
reference efficiency (2 pi-radiation using Re)
Lm
87.53
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
87.885
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
rmse Z
2.2
root-mean-square fitting error of driver impedance Z(f)
rmse Hx
1.405
root-mean-square fitting error of transfer function Hx (f)
Sd
1045.03
cm²
diaphragm area
Xmax
16.4
mm