Thiele/Small Parameters

44L7S124

Re
6.862
Ohm
electrical voice coil resistance at DC
Le
6.5136
mH
frequency independent part of voice coil inductance
Krm
0.0317
Ohm
WRIGHT inductance mode
Erm
0.79
WRIGHT inductance mode
Kxm
0.13468
Ohm
WRIGHT inductance mode
Exm
0.67
WRIGHT inductance mode
Cmes
521.256
µF
electrical capacitance representing moving mass
Lces
49.084
mH
electrical inductance representing driver compliance
Res
106.604
Ohm
resistance due to mechanical losses
fs
31.54
Hz
driver resonance frequency
Mms
260.6774
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
242.16
g
mechanical mass of voice coil and diaphragm without air load
Rms
4.7172
kg/s
mechanical resistance of total-driver losses
Cms
0.098
mm/N
mechanical compliance of driver suspension
Kms
10.228
N/mm
mechanical stiffness of driver suspension
Bl
22.3988
N/A
force factor (Bl product)
Lambda
0.041666667
suspension creep factor
Qtp
0.849
total Q-factor considering all losses
Qms
10.9542
mechanical Q-factor of driver in free air considering Rms only
Qes
0.7076
electrical Q-factor of driver in free air considering Re only
Qts
0.6642
total Q-factor considering Re and Rms only
Vas
57.68878
I
equivalent air volume of suspension
n0
0.2462
%
reference efficiency (2 pi-radiation using Re)
Lm
86.1
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
86.766
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
rmse Z
2.158
%
root-mean-square fitting error of driver impedance Z(f)
rmse Hx
2.01
%
root-mean-square fitting error of transfer function Hx (f)
Sd
645.164
cm²
diaphragm area
Xmax
16.25
mm