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Application Notes

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AN 

Title

R&D System

QC System

1

Optimal Voice Coil Rest Position 

LSI

 MSC

2

Separating Spider and Surround 
Matlab file download

LSI

 

3

Adjusting the Mechanical Suspension 

LSI

 

4

Measurement of Peak Displacement Xmax (performance-based method) 

DIS

 

5

Displacement Limits due to Driver Nonlinearities 

LPM + LSI

 

6

Measurement of Amplitude Modulation 

DIS

 

7

Measurement of Weighted Harmonic Distortion HI-2 

DIS

 

8

3D Intermodulation Distortion Measurement 

DIS

 

9

3D Harmonic Distortion Measurement 

DIS

 

10

AM and FM Distortion in Speakers 

DIS

 

11

Check for Dominant Flux Modulation

DIS

 

12

Causes for Amplitude Compression 

DIS

 

13

Dynamic Generation of DC Displacement 

DIS

 

14

Motor Stability 

DIS

 

15

Checking for Compliance Asymmetry 

DIS

 

16

Multi-tone Distortion Measurement 

LPM

 

18

Thermal Parameter Measurement 

PM8 + PWT

 

19

Measurement of Nonlinear Thermal Parameters 
Calculation excel file download

PM8 + PWT

 

20

Measurement of Equivalent Input Distortion 

TRF

 

21

Reduce Distortion by Shifting Voice Coil 

SIM + LSI

 

22

Rub & Buzz Detection without Golden Unit 

TRF-Pro

 

23

Rub & Buzz Detection with Golden Unit 

TRF-Pro

 

24

Measuring Telecommunication Drivers 

LPM + LSI + DIS + TRF-Pro

 

25

Maximizing LPM Accuracy 

LPM

 
26Nonlinear Stiffness of Suspension Parts
27Power Test of Loudspeakers with CrossoverPWT
28Evaluation of Loudspeaker Protection SystemPWTDIS

29

Long Term Monitoring
AN29 dB-extract standard settings File

PWT

 
30

Scanning Rectangular Speakers 

SPM + TRF

31

Cone Vibration and Radiation Diagnostics 

SCN + TRF

 

32

Effective Radiation Area S

TRF + SCN

 

33

EIA Distortion Test 

DIS

 

34

Mean SPL in a stated Frequency Band 

TRF

 

35

Effective Frequency Range 

TRF

 

36

Characteristic Harmonic Distortion 

TRF

 

37

Characteristic Modulation Distortion 

DIS

 

38

Nearfield Measurement with multiple Drivers and Port 

TRF

 

39

Merging Near and Farfield Measurements 

TRF

 

40

Smoothness of Amplitude Response 

TRF + DIS

 

41

Measurement at defined terminal voltage 

TRF

 

42

Tolerances of resonance frequency 

LPMX
43

Data extraction and post processing 
AN43 Excel Example Data

ALL MODULESX

44

Creating automated reports using VBS 
AN44 Example

ALL MODULES

X

45 

Optimal QC setup for fixed measurement time 
AN45 Software download 

 

X

46

Test Enclosure for QC
AN46 excel file

X
48

Yield Statistics
Example files for AN48

 

X

49Extended Creep ModelingLPM
50Multipoint Parameter Fitting and Load SeparationLPMMultipoint tool
51QC Custom InstallationX
52

KLIPPEL result export to VACS
AN52 file

dB-Lab (RD+QC)X
53Fast quality contol of suspension parts LST
54Directivity Measurement with TurntablesPOL
55

FEA/BEA interface for SCN
Example files for AN55

SCN

 

57Passive Radiator MeasurementSPM-Lite, SIM
59

Power Test with bypassed stimulus from CD
Example data and template

PWT
62On-line Input EqualizationX
64Housing Ground CheckX
65Linking Large Signal Testing between QC and R&D LSIMSC
66FEA2SCN interpolation for SCNSCN
67

Auralisation of Signal Differences
AN67_Example Data

DIF-AURDIF-AUR
69Far Field Measurement using Microphone ArraysPOL
70Directivity of Speaker ArraysNFS

1001

Working with Setup Templates 

DB-Lab