Thiele/Small Parameters

44L7S82

Re
3.40
Ohm
electrical voice coil resistance at DC
Le
3.4736
mH
frequency independent part of voice coil inductance
Krm
0.01
Ohm
WRIGHT inductance mode
Erm
0.85
WRIGHT inductance mode
Kxm
0.04
Ohm
WRIGHT inductance mode
Exm
0.74
WRIGHT inductance mode
Cmes
766.80
µF
electrical capacitance representing moving mass
Lces
17.96
mH
electrical inductance representing driver compliance
Res
43.70
Ohm
resistance due to mechanical losses
fs
42.94
Hz
driver resonance frequency
Mms
136.11
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
131.13
g
mechanical mass of voice coil and diaphragm without air load
Rms
4.07
kg/s
mechanical resistance of total-driver losses
Cms
0.10
mm/N
mechanical compliance of driver suspension
Kms
9.92
N/mm
mechanical stiffness of driver suspension
Bl
13.33
N/A
force factor (Bl product)
Lambda
0.03
suspension creep factor
Qtp
0.80
total Q-factor considering all losses
Qms
9.04
mechanical Q-factor of driver in free air considering Rms only
Qes
0.70
electrical Q-factor of driver in free air considering Re only
Qts
0.65
total Q-factor considering Re and Rms only
Vas
10.36
I
equivalent air volume of suspension
n0
0.11
%
reference efficiency (2 pi-radiation using Re)
Lm
82.69
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
83.40
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
rmse Z
3.61
root-mean-square fitting error of driver impedance Z(f)
rmse Hx
1.79
root-mean-square fitting error of transfer function Hx (f)
Sd
268.96
cm²
diaphragm area
Xmax
13.5
mm