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DIY Audio
Heat buildup in sealed boxes
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<blockquote data-quote="David Morison" data-source="post: 133561" data-attributes="member: 2076"><p>Re: Heat buildup in sealed boxes</p><p></p><p>You could also measure the increase in DC resistance of the voice coil then back-calculate using the thermal coefficient of resistance - I think off the top of my head it adds about 0.004x per Celsuis for copper but that should be relatively easily verifiable (assuming conventional voice coil material of course).</p><p>Not sure how accurate your multimeter would have to be to get meaningful data for any smaller changes however.</p><p>HTH,</p><p>David.</p></blockquote><p></p>
[QUOTE="David Morison, post: 133561, member: 2076"] Re: Heat buildup in sealed boxes You could also measure the increase in DC resistance of the voice coil then back-calculate using the thermal coefficient of resistance - I think off the top of my head it adds about 0.004x per Celsuis for copper but that should be relatively easily verifiable (assuming conventional voice coil material of course). Not sure how accurate your multimeter would have to be to get meaningful data for any smaller changes however. HTH, David. [/QUOTE]
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