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  • piezopete commented on backbeats's instructable Make a Contact Microphone3 months ago
    Make a Contact Microphone

    I am trying to build a throat microphone. I have been reading about the types of cable to use. I would have about 18 inches of cable going from the piezo (on a collar on the neck) and then that would go into a longer cable with a female 1/4 inch to an effects box. I saw one site where they joined the ground wire with the shielding and connected that to the outer ring of the piezo. But here it says I should trim the shielding. I have been having ground noise issues on another piezo I had lying around that already had a cable on it. There I was using a small diameter shielded cable with the shield connected to the outer ring and inner wire connected to the inside of the piezo. When I connected it to a 12 foot guitar cable I got a lot of buzzing. Now I'm trying to do it the correct way. I'...see more »I am trying to build a throat microphone. I have been reading about the types of cable to use. I would have about 18 inches of cable going from the piezo (on a collar on the neck) and then that would go into a longer cable with a female 1/4 inch to an effects box. I saw one site where they joined the ground wire with the shielding and connected that to the outer ring of the piezo. But here it says I should trim the shielding. I have been having ground noise issues on another piezo I had lying around that already had a cable on it. There I was using a small diameter shielded cable with the shield connected to the outer ring and inner wire connected to the inside of the piezo. When I connected it to a 12 foot guitar cable I got a lot of buzzing. Now I'm trying to do it the correct way. I'm also uncertain how the long cable to the amp should be set up. Shield and ground together or trim shield on both ends? Also I wonder if there is a substance to go over the bottom of the piezo that will allow maximum response against the skin or if I should leave the bottom metal part as it is? Thanks

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