Thiele/Small Parameters

51CWQ104

Electrical Parameters
Re
7.22
Ohm
electrical voice coil resistance at DC
Krm
0.01575
Ohm
WRIGHT inductance model
Erm
0.85
WRIGHT inductance model
Kxm
0.0782
Ohm
WRIGHT inductance model
Exm
0.74
WRIGHT inductance model
Cmes
294.995
µF
electrical capacitance representing moving mass
Lces
60.32
mH
electrical inductance representing driver compliance
Res
152.195
Ohm
resistance due to mechanical losses
Fs
37.8
Hz
driver resonance frequency
Mechanical Parameters
Mms
198.151
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd (Sd)
190.867
g
mechanical mass of voice coil and diaphragm without air load
Rms
4.4215
kg/s
mechanical resistance of total-driver losses
Cms
0.09
mm/N
mechanical compliance of driver suspension
Kms
11.2
N/mm
mechanical stiffness of driver suspension
Bl
25.9205
Tm
force factor (Bl product)
Loss factors
Qtp
0.5875
total Q-factor considering all losses
Qms
10.648
mechanical Q-factor of driver in free air considering Rms only
Qes
0.5065
electrical Q-factor of driver in free air considering Re only
Qts
0.4835
total Q-factor considering Re and Rms only
Other Parameters
Vas
15.2258
I
equivalent air volume of suspension
n0
0.1555
reference efficiency (2 pi-radiation using Re)
Lm
84.13
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
84.575
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
Sd
346.36
cm²
diaphragm area
Xmax
19.7
mm