Thiele/Small Parameters

44L7S152

Re
3.6
Ohm
electrical voice coil resistance at DC
Le
4.95225
mH
frequency independent part of voice coil inductance
Krm
0.0231
Ohm
WRIGHT inductance mode
Erm
0.7875
WRIGHT inductance mode
Kxm
0.0957
Ohm
WRIGHT inductance mode
Exm
0.6775
WRIGHT inductance mode
Cmes
955.5525
µF
electrical capacitance representing moving mass
Lces
41.92
mH
electrical inductance representing driver compliance
Res
100.9025
Ohm
resistance due to mechanical losses
fs
25.2
Hz
driver resonance frequency
Mms
441.833
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
403.7535
g
mechanical mass of voice coil and diaphragm without air load
Rms
4.60575
kg/s
mechanical resistance of total-driver losses
Cms
0.0905
mm/N
mechanical compliance of driver suspension
Kms
11.0925
N/mm
mechanical stiffness of driver suspension
Bl
21.5085
N/A
force factor (Bl product)
Lambda
0.058
suspension creep factor
Qtp
0.70225
total Q-factor considering all losses
Qms
15.2385
mechanical Q-factor of driver in free air considering Rms only
Qes
0.5445
electrical Q-factor of driver in free air considering Re only
Qts
0.526
total Q-factor considering Re and Rms only
Vas
139.67785
I
equivalent air volume of suspension
n0
0.39325
%
reference efficiency (2 pi-radiation using Re)
Lm
88.145
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
88.6
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
rmse Z
3.1725
%
root-mean-square fitting error of driver impedance Z(f)
rmse Hx
1.595
%
root-mean-square fitting error of transfer function Hx (f)
Sd
1043.3
cm²
diaphragm area
Xmax
19
mm