Thiele/Small Parameters

50CWCD124

Electrical Parameters
Re
7.485
Ohm
electrical voice coil resistance at DC
Krm
0.00485
Ohm
WRIGHT inductance mode
Erm
0.925
WRIGHT inductance mode
Kxm
0.03795
Ohm
WRIGHT inductance mode
Exm
0.775
WRIGHT inductance mode
Cmes
613.11
µF
electrical capacitance representing moving mass
Lces
39.39
mH
electrical inductance representing driver compliance
Res
63.035
Ohm
resistance due to mechanical losses
fs
32.45
Hz
driver resonance frequency
Mechanical Parameters
Mms
127.2375
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd(Sd)
113.4135
g
mechanical mass of voice coil and diaphragm without air load
Rms
3.299
kg/s
mechanical resistance of total-driver losses
Cms
0.1895
mm/N
mechanical compliance of driver suspension
Kms
5.275
N/mm
mechanical stiffness of driver suspension
Bl
14.406
Tm
force factor (Bl product)
Loss Parameters
Qtp
0.9025
total Q-factor considering all losses
Qms
7.863
mechanical Q-factor of driver in free air considering Rms only
Qes
0.934
electrical Q-factor of driver in free air considering Re only
Qts
0.835
total Q-factor considering Re and Rms only
Other Parameters
Vas
75.7283
I
equivalent air volume of suspension
n0
0.2645
reference efficiency (2 pi-radiation using Re)
Lm
86.425
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
86.72
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
Sd
530.93
cm²
diaphragm area
Xmax
13.275
mm