Thiele/Small Parameters

41L7122

Re
3.66
Ohm
electrical voice coil resistance at DC
Krm
0.03745
Ohm
WRIGHT inductance mode
Erm
0.71
WRIGHT inductance mode
Kxm
0.09245
Ohm
WRIGHT inductance mode
Exm
0.665
WRIGHT inductance mode
Cmes
962.72
µF
electrical capacitance representing moving mass
Lces
24.055
mH
electrical inductance representing driver compliance
Res
57.395
Ohm
resistance due to mechanical losses
fs
33.35
Hz
driver resonance frequency
Mms
340.6535
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
322.57
g
mechanical mass of voice coil and diaphragm without air load
Rms
6.1845
kg/s
mechanical resistance of total-driver losses
Cms
0.068
mm/N
mechanical compliance of driver suspension
Kms
15.02
N/mm
mechanical stiffness of driver suspension
Bl
18.812
Tm
force factor (Bl product)
Lambda
0.095
suspension creep factor
Qtp
0.981
total Q-factor considering all losses
Qms
11.523
mechanical Q-factor of driver in free air considering Rms only
Qes
0.736
electrical Q-factor of driver in free air considering Re only
Qts
0.692
total Q-factor considering Re and Rms only
Vas
38.8833
I
equivalent air volume of suspension
n0
0.184
reference efficiency (2 pi-radiation using Re)
Lm
84.855
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
85.245
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
rmse Z
2.61
root-mean-square fitting error of driver impedance Z(f)
rmse Hx
1.795
root-mean-square fitting error of transfer function Hx (f)
Sd
635.03
cm²
diaphragm area
Xmax
21
mm