Thought i would start this discussion on the different tyope of elements that can be used in a harp mic. My first one [ one so far ] i used an old rotary telephone element. Rather large at 2" round but does have that old victrola sound. I bought some new smaller ones [ 1 1/8"  round ] from a surplus electronics site i found on the net. These are alot newer the the rotary phone ones. I`m thinking i can make the housing smaller which will be alot better in holding the mic itself.

Views: 310

Replies to This Discussion

In theory any old speaker can be used as an element correct?

It can, I've done it a couple of times. Used the speakers from an old set of big headphones. It worked but it isn't very good, I also had some luck using a piezo disc suspended in a diaphragm of cling film. Worked surprisingly well.

I was given an ebook the other day of electrical circuits and there was a circuit diagram to make any miniature speaker into a microphone element. I'll have a look and post up when I find it. 

Just messing around the other day I took a 3 inch speaker and hooked it up to an old instrument cable I had lying around.

I plugged that into one of my homemade amps... It worked... Just not very loud. I really had to almost yell to hear anything at all and that was louder than my typical busking set up and thus, pointless.

I have a few Shure SM57's laying around and I looked at the elements in those and the diaphragm is a clear plastic, not the black paper material used in most speakers. I think the clear plastic requires less force into the microphone to drive. At work I found an old government rotary dial phone and checked the microphone in there and it is also a clear plastic driver.

RSS

The Essential Pages

New to Cigar Box Nation? How to Play Cigar Box GuitarsFree Plans & How to Build Cigar Box GuitarsCigar Box Guitar Building BasicsCigar Box Guitar Parts Store

Site Sponsor

Recommended Links & Resources


Discussion Forum

Homemade Microphone - Housing

Started by Randy S. Bretz. Last reply by Kevin Keating Oct 23, 2019. 4 Replies

Old Telephone Bullet Mic

Started by Brian Revels. Last reply by Blind Lemon Cello May 13, 2016. 1 Reply

Elements

Started by Randy S. Bretz. Last reply by PKB Oct 25, 2013. 3 Replies

Harmonica Mics...

Started by Isaac. Last reply by Randy S. Bretz Sep 23, 2012. 9 Replies

Adding Componets

Started by Randy S. Bretz. Last reply by Randy S. Bretz Sep 2, 2012. 1 Reply

Blog Posts

Leonard Cohen Life

Posted by Keith Rearick on October 7, 2021 at 11:18am 0 Comments

CBGer’s Lament

Posted by Ghostbuttons on October 3, 2021 at 12:11am 0 Comments

Sasquatch!

Posted by Mark E. Martinsen on September 29, 2021 at 8:39pm 3 Comments

Prototyping with a big ol' wine box

Posted by Ben on September 23, 2021 at 4:00pm 0 Comments

Mr. Bells

Posted by Stephen Cohen on September 4, 2021 at 12:30pm 0 Comments

Latest Activity

AGP # commented on AGP #'s photo
Thumbnail

AGP #446 - ''Jolly Jumbuck''

""Thanks UJ", Yep!, slowly getting the hang of it, should have it down pat after another…"
10 minutes ago
AGP # commented on AGP #'s photo
Thumbnail

AGP #446 - ''Jolly Jumbuck''

""Thanks UJ", Jumbuck BBQ's are one of the biggest sellers in the Land of Oz, and…"
12 minutes ago
Randy S. Bretz posted a photo

Crushed pearl star inlay

Last detail before final assembly
22 minutes ago
Keith Rearick liked Uncle John's photo
50 minutes ago
Keith Rearick liked Chuck Hunsinger's photo
51 minutes ago
Keith Rearick liked the anonymous pick's photo
51 minutes ago
Chuck Hunsinger commented on Chuck Hunsinger's photo
Thumbnail

IMG_20211026_192544

"Thanks Brian, I'll try that next time"
51 minutes ago
Keith Rearick liked AGP #'s photo
52 minutes ago
Keith Rearick liked AGP #'s photo
52 minutes ago
Keith Rearick liked AGP #'s photo
53 minutes ago
Keith Rearick liked Lee Custom Shop's photo
53 minutes ago
Keith Rearick liked Lee Custom Shop's photo
54 minutes ago

Music

© 2021   Created by Ben "C. B. Gitty" Baker.   Powered by

Badges  |  Report an Issue  |  Terms of Service

\uastyle>\ud/** Scrollup **/\ud.scrollup {\ud background: url("https://storage.ning.com/topology/rest/1.0/file/get/963882636?profile=original") no-repeat scroll 0 0 transparent;\ud bottom: 25px;\ud display: inline !important;\ud height: 40px;\ud opacity: 0.3 !important;\ud position: fixed;\ud right: 30px;\ud text-indent: -9999px;\ud width: 40px;\ud z-index: 999;\ud}\ud.scrollup:hover {\ud opacity:0.99!important;\ud}\ud \uascript type="text/javascript">\ud x$(document).ready(function(){\ud x$(window).scroll(function(){\ud if (x$(this).scrollTop() > 100) {\ud x$('.scrollup').fadeIn();\ud } else {\ud x$('.scrollup').fadeOut();\ud }\ud });\ud x$('.scrollup').click(function(){\ud x$("html, body").animate({ scrollTop: 0 }, 600);\ud return false;\ud });\ud });\ud \ua!-- End Scroll Up -->