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DIY For Audio
Calling all the driver testing propellerheads!!
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<blockquote data-quote="Shonver" data-source="post: 6382" data-attributes="member: 34"><p>I don't think those figures are so wacky, but try running in the driver and see if it changes much. Don't change the mounting arrangement for added mass: keep it mounted vertically.</p><p></p><p>I use 20R for a reference/sense resistor. I like to keep it close to the resistance range of the device under test.</p><p></p><p>To get the impedance reading right, the curves simply need to coincide, as discussed before. You can affect the accuracy by choosing the measurement window (min/max frequency) appropriately. I.e., try limiting the bandwidth. If the curve fits, then true Le is as <em>you </em>have measured it.</p><p></p><p>I have heard it said that delta V method is more accurate, so perhaps you can try playing with this, while you're at it.</p></blockquote><p></p>
[QUOTE="Shonver, post: 6382, member: 34"] I don't think those figures are so wacky, but try running in the driver and see if it changes much. Don't change the mounting arrangement for added mass: keep it mounted vertically. I use 20R for a reference/sense resistor. I like to keep it close to the resistance range of the device under test. To get the impedance reading right, the curves simply need to coincide, as discussed before. You can affect the accuracy by choosing the measurement window (min/max frequency) appropriately. I.e., try limiting the bandwidth. If the curve fits, then true Le is as [i]you [/i]have measured it. I have heard it said that delta V method is more accurate, so perhaps you can try playing with this, while you're at it. [/QUOTE]
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DIY & Tutorials
DIY For Audio
Calling all the driver testing propellerheads!!
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