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I'm trying to repair my K40 Speech Processor mic. The little piece that changes resistance when voice audio pressure waves vibrates the mic diaphragm is broken. Does anyone have an K40 speech processor mic they want to sell? I tried to use an electret mic element and a dynamic mic element but the electret element needs 5 volts to operate and I think that the impedance needs matched up with the speech processor circuitry.
I checked the impedance on the unbroken part of the K40 element and it registers on my ohmmeter but doesn't on the part that's past the cracked place. I strummed my finger accord the element and that produces an audio output so the rest of the mic guts work.

If you look at the photo you'll see where it's cracked
http://www.cbtricks.com/mic_manuals/k40/k40_man.pdf

<blockquote data-quote="Lil&amp;#039;Yeshua" data-source="post: 461132" data-attributes="member: 28438">I&#039;m trying to repair my K40 Speech Processor mic. The little piece that changes resistance when voice audio pressure waves vibrates the mic diaphragm is broken. Does anyone have an K40 speech processor mic they want to sell? I tried to use an electret mic element and a dynamic mic element but the electret element needs 5 volts to operate and I think that the impedance needs matched up with the speech processor circuitry. I checked the impedance on the unbroken part of the K40 element and it registers on my ohmmeter but doesn&#039;t on the part that&#039;s past the cracked place. I strummed my finger accord the element and that produces an audio output so the rest of the mic guts work. If you look at the photo you&#039;ll see where it&#039;s cracked<a href="http://www.cbtricks.com/mic_manuals/k40/k40_man.pdf" target="_blank">http://www.cbtricks.com/mic_manuals/k40/k40_man.pdf</a></blockquote>

[QUOTE="Lil'Yeshua, post: 461132, member: 28438"] I'm trying to repair my K40 Speech Processor mic. The little piece that changes resistance when voice audio pressure waves vibrates the mic diaphragm is broken. Does anyone have an K40 speech processor mic they want to sell? I tried to use an electret mic element and a dynamic mic element but the electret element needs 5 volts to operate and I think that the impedance needs matched up with the speech processor circuitry. I checked the impedance on the unbroken part of the K40 element and it registers on my ohmmeter but doesn't on the part that's past the cracked place. I strummed my finger accord the element and that produces an audio output so the rest of the mic guts work. If you look at the photo you'll see where it's cracked [url]http://www.cbtricks.com/mic_manuals/k40/k40_man.pdf[/url] [/QUOTE]

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