Thiele/Small Parameters

43CWRT671

Re
2.14
Ohm
electrical voice coil resistance at DC
Krm
0.0011
Ohm
WRIGHT inductance mode
Erm
0.89
WRIGHT inductance mode
Kxm
0.0057
Ohm
WRIGHT inductance mode
Exm
0.8
WRIGHT inductance mode
Cmes
813.94
µF
electrical capacitance representing moving mass
Lces
10.05
mH
electrical inductance representing driver compliance
Res
39.52
Ohm
resistance due to mechanical losses
fs
55.6
Hz
driver resonance frequency
Mms
43.337
g
mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd
41.726
g
mechanical mass of voice coil and diaphragm without air load
Rms
1.347
kg/s
mechanical resistance of total-driver losses
Cms
0.189
mm/N
mechanical compliance of driver suspension
Kms
5.3
N/mm
mechanical stiffness of driver suspension
Bl
7.297
Tm
force factor (Bl product)
Lambda
0.049
suspension creep factor
Qtp
0.628
total Q-factor considering all losses
Qms
11.245
mechanical Q-factor of driver in free air considering Rms only
Qes
0.609
electrical Q-factor of driver in free air considering Re only
Qts
0.578
total Q-factor considering Re and Rms only
Vas
4.2881
I
equivalent air volume of suspension
n0
0.117
reference efficiency (2 pi-radiation using Re)
Lm
82.87
dB
characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom
82.57
dB
nominal sensitivity (SPL at 1m for 1W @ Zn)
rmse Z
3.52
root-mean-square fitting error of driver impedance Z(f)
rmse Hx
2.37
root-mean-square fitting error of transfer function Hx (f)
0
Ohm
resistance of series resistor
Sd
126.68
cm²
diaphragm area
Xmax
5.1
mm