Thiele/Small Parameters

48CWRT82

Re
3.955
Ohm
electrical voice coil resistance at DC
Krm
0.00425
Ohm
WRIGHT inductance model
Erm
0.835
WRIGHT inductance model
Kxm
0.01495
Ohm
WRIGHT inductance model
Exm
0.79
WRIGHT inductance model
Cmes
635.09
µF
electrical capacitance representing moving mass
Lces
21.03
mH
electrical inductance representing driver compliance
Res
79.135
Ohm
resistance due to mechanical losses
fs
43.55
Hz
driver resonance frequency
Mms
83.6545
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
80.3715
g
mechanical mass of voice coil and diaphragm without air load
Rms
1.665
kg/s
mechanical resistance of total-driver losses
Cms
0.16
mm/N
mechanical compliance of driver suspension
Kms
6.265
N/mm
mechanical stiffness of driver suspension
Bl
11.4775
Tm
force factor (Bl product)
Qtp
0.7275
total Q-factor considering all losses
Qms
13.7515
mechanical Q-factor of driver in free air considering Rms only
Qes
0.6875
electrical Q-factor of driver in free air considering Re only
Qts
0.655
total Q-factor considering Re and Rms only
Vas
9.3637
I
equivalent air volume of suspension
n0
0.1085
%
reference efficiency (2 pi-radiation using Re)
Lm
82.54
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
82.59
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
Sd
203.58
cm²
diaphragm area
Xmax
8
mm
Xmax (Linear Excursion)