Thiele/Small Parameters

44L7S104

Re
8.166
Ohm
electrical voice coil resistance at DC
Le
6.4506
mH
frequency independent part of voice coil inductance
Krm
0.02612
Ohm
WRIGHT inductance mode
Erm
0.814
WRIGHT inductance mode
Kxm
0.12478
Ohm
WRIGHT inductance mode
Exm
0.68
WRIGHT inductance mode
Cmes
329.26
µF
electrical capacitance representing moving mass
Lces
70.838
mH
electrical inductance representing driver compliance
Res
81.85
Ohm
resistance due to mechanical losses
fs
33.02
Hz
driver resonance frequency
Mms
185.6848
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
175.5158
g
mechanical mass of voice coil and diaphragm without air load
Rms
3.11
kg/s
mechanical resistance of total-driver losses
Cms
0.1252
mm/N
mechanical compliance of driver suspension
Kms
8.002
N/mm
mechanical stiffness of driver suspension
Bl
23.7614
N/A
force factor (Bl product)
Lambda
0.0407
suspension creep factor
Qtp
0.6558
total Q-factor considering all losses
Qms
12.3974
mechanical Q-factor of driver in free air considering Rms only
Qes
0.558
electrical Q-factor of driver in free air considering Re only
Qts
0.5342
total Q-factor considering Re and Rms only
Vas
33.17974
I
equivalent air volume of suspension
n0
0.2062
%
reference efficiency (2 pi-radiation using Re)
Lm
85.336
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
85.248
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
rmse Z
2.652
%
root-mean-square fitting error of driver impedance Z(f)
rmse Hx
1.877
%
root-mean-square fitting error of transfer function Hx (f)
Sd
432.636
cm²
diaphragm area
Xmax
16.25
mm