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Possibly damaged subwoofer
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<blockquote data-quote="1aespinoza" data-source="post: 8798938" data-attributes="member: 654802"><p>You are good to go. Subwoofer voice coils usually read below their rated resistance. Once the coil begins to move, magnetic inductance will cause an impedance rise. All this is factored into circuit design so no need for alarm. This is how you test thise coils- For Parallel</p><p>[ATTACH=full]40358[/ATTACH]</p><p>For Series[ATTACH=full]40359[/ATTACH]</p><p>Edit- Yours is a dual 4 Ohms! Something is wrong here. Remove the jumper and test each coil. Each should be close to 4 Ohms. It is reading as a dual 2 Ohms.</p><p>I just scrutinized the pictures, definitely a bad coil.</p></blockquote><p></p>
[QUOTE="1aespinoza, post: 8798938, member: 654802"] You are good to go. Subwoofer voice coils usually read below their rated resistance. Once the coil begins to move, magnetic inductance will cause an impedance rise. All this is factored into circuit design so no need for alarm. This is how you test thise coils- For Parallel [ATTACH=full]40358[/ATTACH] For Series[ATTACH=full]40359[/ATTACH] Edit- Yours is a dual 4 Ohms! Something is wrong here. Remove the jumper and test each coil. Each should be close to 4 Ohms. It is reading as a dual 2 Ohms. I just scrutinized the pictures, definitely a bad coil. [/QUOTE]
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