Parameter:
KLIPPEL ANALYZER SYSTEM
Short Report
Linear Parameter Measurement (LPM)
Driver Name:
160W7610(08/11/10)
Measurement:
LPM woofer
|
Linear parameters |
|||
|
Name |
Value |
Unit |
Comment |
|
Electrical Parameters |
|
|
|
|
Re |
3.28 |
Ohm |
electrical voice coil resistance at DC |
|
Le |
0.282 |
mH |
frequency independent part of voice coil inductance |
|
L2 |
0.439 |
mH |
para-inductance of voice coil |
|
R2 |
4.05 |
Ohm |
electrical resistance due to eddy current losses |
|
Cmes |
571.50 |
μF |
electrical capacitance representing moving mass |
|
Lces |
14.69 |
mH |
electrical inductance representing driver compliance |
|
Res |
40.57 |
Ohm |
resistance due to mechanical losses |
|
fs |
54.9 |
Hz |
driver resonance frequency |
|
|
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|
Mechanical Parameters |
|
|
|
|
(using laser) |
|
|
|
|
Mms |
16.576 |
g |
mechanical mass of driver diaphragm assembly including air load and voice coil |
|
Mmd (Sd) |
15.649 |
g |
mechanical mass of voice coil and diaphragm without air load |
|
Rms |
0.715 |
kg/s |
mechanical resistance of total-driver losses |
|
Cms |
0.506 |
mm/N |
mechanical compliance of driver suspension |
|
Kms |
1.97 |
N/mm |
mechanical stiffness of driver suspension |
|
Bl |
5.39 |
N/A |
force factor (Bl product) |
|
Lambda s |
0.066 |
|
suspension creep factor |
|
|
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|
Loss factors |
|
|
|
|
Qtp |
0.600 |
|
total Q-factor considering all losses |
|
Qms |
8.002 |
|
mechanical Q-factor of driver in free air considering Rms only |
|
Qes |
0.648 |
|
electrical Q-factor of driver in free air considering Re only |
|
Qts |
0.599 |
|
total Q-factor considering Re and Rms only |
|
|
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|
Vas |
13.8328 |
l |
equivalent air volume of suspension |
|
n0 |
0.340 |
% |
reference efficiency (2 pi-radiation using Re) |
|
Lm |
87.52 |
dB |
characteristic sound pressure level (SPL at 1m for 1W @ Re) |
|
Lnom |
Zn missing |
dB |
nominal sensitivity (SPL at 1m for 1W @ Zn) |
|
|
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|
rmse Z |
2.91 |
% |
root-mean-square fitting error of driver impedance Z(f) |
|
rmse Hx |
2.40 |
% |
root-mean-square fitting error of transfer function Hx (f) |
|
|
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|
Series resistor |
0.00 |
Ohm |
resistance of series resistor |
|
Sd |
138.93 |
cm |
diaphragm area |
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