Hi all. I've been looking at trying Klippel's performance based testing method here http://www.klippel.de/pubs/papers.asp
I can do all of it, but need two things: a way to measure excursion and a QUICK way to calculate the distortions from a spectrum plot. I found Linkwitz made a pretty clever little excursion measuring device so I'm covered there.
I'll be using a spectrum analyzer in Soundeasy. You can see it in the driver tests in my sig. Similar to MarkK's plots. I think what I'll have to do is take a screen capture. Then I need some software to read the harmonics if possible, and then calculate the distortions per Klippel's formula. I suppose I may have to enter the values in myself, so I may be able to get by with just the calculator software. Anyone interested in designing such software/spreadsheet?
Basically I would like to get a more realistic idea of just how much xmax any given driver has. Klippel's method would also indicate what the limiting factor was, suspension, BL, etc. You could also get a better idea of performance when comparing an underhung versus overhung design how they behave at their limits.
I can do all of it, but need two things: a way to measure excursion and a QUICK way to calculate the distortions from a spectrum plot. I found Linkwitz made a pretty clever little excursion measuring device so I'm covered there.
I'll be using a spectrum analyzer in Soundeasy. You can see it in the driver tests in my sig. Similar to MarkK's plots. I think what I'll have to do is take a screen capture. Then I need some software to read the harmonics if possible, and then calculate the distortions per Klippel's formula. I suppose I may have to enter the values in myself, so I may be able to get by with just the calculator software. Anyone interested in designing such software/spreadsheet?
Basically I would like to get a more realistic idea of just how much xmax any given driver has. Klippel's method would also indicate what the limiting factor was, suspension, BL, etc. You could also get a better idea of performance when comparing an underhung versus overhung design how they behave at their limits.
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