Thiele/Small Parameters

45L7R152

Re
4.06
Ohm
electrical voice coil resistance at DC
Krm
0.01385
Ohm
WRIGHT inductance mode
Erm
0.885
WRIGHT inductance mode
Kxm
0.10115
Ohm
WRIGHT inductance mode
Exm
0.7
WRIGHT inductance mode
Cmes
988.955
µF
electrical capacitance representing moving mass
Lces
39.86
mH
electrical inductance representing driver compliance
Res
53.67
Ohm
resistance due to mechanical losses
fs
25.35
Hz
driver resonance frequency
Mms
429.855
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
391.6805
g
mechanical mass of voice coil and diaphragm without air load
Rms
8.103
kg/s
mechanical resistance of total-driver losses
Cms
0.0915
mm/N
mechanical compliance of driver suspension
Kms
10.905
N/mm
mechanical stiffness of driver suspension
Bl
20.848
Tm
force factor (Bl product)
Lambda
0.0765
suspension creep factor
Qtp
0.7585
total Q-factor considering all losses
Qms
8.4535
mechanical Q-factor of driver in free air considering Rms only
Qes
0.64
electrical Q-factor of driver in free air considering Re only
Qts
0.5945
total Q-factor considering Re and Rms only
Vas
141.7355
I
equivalent air volume of suspension
n0
0.3475
reference efficiency (2 pi-radiation using Re)
Lm
87.605
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
87.54
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
rmse Z
2.305
root-mean-square fitting error of driver impedance Z(f)
rmse Hx
1.58
root-mean-square fitting error of transfer function Hx (f)
Sd
1045.03
cm²
diaphragm area
Xmax
16.4
mm