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How to tell/confirm voice coil is 100% functional?
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<blockquote data-quote="hispls" data-source="post: 8772620" data-attributes="member: 614752"><p>That's just your DMM it probably has an auto-range feature. </p><p></p><p>If coils are visibly intact, nothing is dented, bent, or cracked, and no outgassing issues (look for bubbles on the former on the inside) and your impedance reads within 10-15% of published number they're fine.</p><p></p><p>If you had to cut back the leads make sure to scrape away the shellac so you have nice shiny clean copper for contact before trying to solder and crimp that to your tinsel. As you rebuild be sure to pop the terminals with a flashlight battery (if you're assembling in the frame) or confirm you have a proper connection with DMM before you glue up the triple joint to make sure you did in fact get a good connection everywhere.</p><p></p><p>You may have to gently unwind that lead to get enough up above the spider to connect to your tinsel.</p></blockquote><p></p>
[QUOTE="hispls, post: 8772620, member: 614752"] That's just your DMM it probably has an auto-range feature. If coils are visibly intact, nothing is dented, bent, or cracked, and no outgassing issues (look for bubbles on the former on the inside) and your impedance reads within 10-15% of published number they're fine. If you had to cut back the leads make sure to scrape away the shellac so you have nice shiny clean copper for contact before trying to solder and crimp that to your tinsel. As you rebuild be sure to pop the terminals with a flashlight battery (if you're assembling in the frame) or confirm you have a proper connection with DMM before you glue up the triple joint to make sure you did in fact get a good connection everywhere. You may have to gently unwind that lead to get enough up above the spider to connect to your tinsel. [/QUOTE]
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How to tell/confirm voice coil is 100% functional?
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