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Low Earth Orbit
DIY Audio
Speaker repair/rebuild questions
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<blockquote data-quote="Art Welter" data-source="post: 89191" data-attributes="member: 52"><p>Re: Speaker repair/rebuild questions</p><p></p><p></p><p>DC voltage through a speaker's field coil provides the magnetic field for the speaker. </p><p>AFAIK, the DC is from the battery, not elsewhere. Many old tube car radios are 6 volt, not 12, so the field coil impedance would differ between the two.</p><p></p><p>There are some old tube radio forums with people familiar with these kinds of "projects", but you will need brand names and photos to get information.</p></blockquote><p></p>
[QUOTE="Art Welter, post: 89191, member: 52"] Re: Speaker repair/rebuild questions DC voltage through a speaker's field coil provides the magnetic field for the speaker. AFAIK, the DC is from the battery, not elsewhere. Many old tube car radios are 6 volt, not 12, so the field coil impedance would differ between the two. There are some old tube radio forums with people familiar with these kinds of "projects", but you will need brand names and photos to get information. [/QUOTE]
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