Thiele/Small Parameters

48CWRT104

Re
7.945
Ohm
electrical voice coil resistance at DC
Krm
0.00995
Ohm
WRIGHT inductance model
Erm
0.87
WRIGHT inductance model
Kxm
0.06085
Ohm
WRIGHT inductance model
Exm
0.73
WRIGHT inductance model
Cmes
411.005
µF
electrical capacitance representing moving mass
Lces
58.97
mH
electrical inductance representing driver compliance
Res
109.01
Ohm
resistance due to mechanical losses
fs
32.3
Hz
driver resonance frequency
Mms
150.85
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
143.4615
g
mechanical mass of voice coil and diaphragm without air load
Rms
3.3775
kg/s
mechanical resistance of total-driver losses
Cms
0.161
mm/N
mechanical compliance of driver suspension
Kms
6.225
N/mm
mechanical stiffness of driver suspension
Bl
19.158
Tm
force factor (Bl product)
Qtp
0.6915
total Q-factor considering all losses
Qms
9.097
mechanical Q-factor of driver in free air considering Rms only
Qes
0.6635
electrical Q-factor of driver in free air considering Re only
Qts
0.618
total Q-factor considering Re and Rms only
Vas
27.7985
I
equivalent air volume of suspension
n0
0.136
%
reference efficiency (2 pi-radiation using Re)
Lm
83.54
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
83.565
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
Sd
349.67
cm²
diaphragm area
Xmax
10.5
mm
Xmax (Linear Excursion)