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Dirty-South Blues Harp forum: wail on! > My first mic project
My first mic project
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HawkeyeKane
1679 posts
May 12, 2013
8:28 PM
Well, today is Mother's Day. And for Mother's Day, my wife wanted to go antiquing. So we hit a local antique mall....and look what sat in a booth for a whopping eight bucks.

 photo a50e7896-febf-4199-b087-d796d26a1f90.jpg

An old Bell/Western Electric phone. That's right. There were a few more there of the same ilk, but not for $8. So, I jumped on it. Got it home and started dismantling it immediately.

First bit I got off was the earpiece, and found this delightful little unit.

 photo 2013-05-12172346.jpg
 photo 2013-05-12172356.jpg

Quite nice. Took me a while to get the mouthpiece unscrewed. In fact, I had to use a set of oil filter vise-grips to free it up. In there, I found a little dynamic unit.

 photo 2013-05-12195731.jpg
 photo 2013-05-12195747.jpg
 photo 2013-05-12195822.jpg

Had a little plastic capsule piece that made the connections and held the element secure too. Unfortunately, I couldn't give it a test since I have not transformer to channel it.

But the earpiece unit had some pretty nice bright tone. Hear it here.



Doubt I'll keep the element in the phone's original housing. I'm sure I can come up with something more original to build a mic into. Any ideas or recommendations? I saw JaredSA built one out of an egg timer. Pretty neat idea.
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Hawkeye Kane
nacoran
6793 posts
May 12, 2013
8:39 PM
Cool.

For casings did you see my thread with shower heads? It dropped off the front page without anyone commenting on it yesterday. It wouldn't work with this phone, but one of the old stick phones would be fun to convert into a double microphone for more intimate folksy performances... walk on stage, sit down, point the normal mouthpiece at your guitar and use the earpiece for the vocals and harp (I suppose you could mount something like that on a stand- turn the mic off by hanging up... I don't know why I'm thinking up such weird stuff lately. I wish I had a budget and a workshop. I'm all fidgety.

I always over complicate things. I would have wanted to use the dialer to change FX, or at least mic it for special percussion.

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Nate
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shbamac
321 posts
May 12, 2013
8:49 PM
That element is carbon and worthless for harp. The speaker can make for a good harp mic. Especially if you pair it with impedance matching transformer. The older speakers are even better.
didjcripey
541 posts
May 12, 2013
9:48 PM
Ideas or recommendations?:

buy a classy vintage shell (preferably with good patina, ie beat up) and put a good Shure CM in it with the right gasket.

I've made mics from wooden salt shakers,plastic eggs and I've got a few tap handles that are chrome with fins and look great. I've tried dozens of different elements, and they all sound OK, but for me, nothing beats vintage shell and CM (haven't tried a good CR yet!).

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Lucky Lester
MakaInOz
79 posts
May 12, 2013
11:24 PM
It's counter-intuitive, but a phone speaker usually works better than the 'mic' as a mic.

I use a roll-on deodorant bottle as a case. Volume control and 1/4" jack in the base, element where the ball sits and lots of holes in the cap. Works a treat!
Cheers
Maka
2chops
129 posts
May 13, 2013
4:33 AM
Hawkeye...I made a bullet from the same phone this past fall. My son-in-law's mom gave it to me. It was her moms. Anyways, I used the ear piece and left it in its shell. Only I cut the handle off about 1/4" from the "bell". Wired it up with an xlr mic cord and it sounds pretty good. LOTS of handling noise though. If I'm not care full, my wedding ring can easily be heard tapping on it when I move my hands. I like the size of the original ear piece for in my hands. So I'll just use as is for the time being. Very hot though. Carefjll of the feedback. Nice find.

Ron
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I'm workin on it. I'm workin on it.
Frank
2375 posts
May 13, 2013
5:57 AM
I wonder how a "loud speaker" would work for amplifying a harp?
HawkeyeKane
1680 posts
May 13, 2013
7:28 AM
@shbamac

I dunno about the mouthpiece element being worthless for harp. Technobird has some very similar ones for sale on his page.

Vintage Motorola Dynamic Microphone Element

Guess I'll have to wait and see what mine does with a transformer.

@Frank

Well....I have a miniature one...



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Hawkeye Kane
Frank
2377 posts
May 13, 2013
7:58 AM
It works :) pretty trippy...I have one that's a little bigger for my wife to use to yell to me downstairs to turn down and when she does come down she can turn on the siren to let me know she is coming. I'm gunna have to incorporate it it into a song. How did it go over on your gig?
HawkeyeKane
1681 posts
May 13, 2013
9:16 AM
Well truth be told, that was almost a year ago. I haven't really used it in the ensuing time since. It was a fun little accessory that had a few uses on stage, like the siren on "Route 66". But overall, it's probably only useful as a busking tool, and busking is something I don't really have time for.

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Hawkeye Kane

Last Edited by HawkeyeKane on May 13, 2013 9:16 AM
shbamac
322 posts
May 13, 2013
1:08 PM
That element you posted a link to is completely different. That is a dynamic element. What you have a carbon element. And from my experience they sound like shit. Though you may like it. Have fun with it.

They are fun to make.





Last Edited by shbamac on May 13, 2013 1:19 PM
HawkeyeKane
1821 posts
Jun 27, 2013
1:49 PM
Scored another receiver today!





A guy was walking out of my office building with the phone in his hand and I mentioned I had just gotten one and taken the receiver out of it for a harmonica mic. He proceeded to unscrew the recevier grill and snipped it off. Said he knew of a bunch more thatwee getting thrown away, and he'd try to salvage the elements for me. Yeah!!!

This one is definitely newer. Anyone know about the little cap between the terminals?

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Hawkeye Kane
Harpaholic
250 posts
Jun 27, 2013
1:56 PM
Caps where used to roll off the highs
HawkeyeKane
1822 posts
Jun 27, 2013
2:08 PM
Probably go *snip snip* then?
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Hawkeye Kane
Greg Heumann
2224 posts
Jun 27, 2013
2:51 PM
My understanding is that a carbon element needs to have a voltage passed through it to work. That would take additional circuitry to work - an amp doesn't supply such a voltage. The earpiece is a small speaker - i.e., dynamic element and will work.
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/Greg

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Hondo
215 posts
Jun 28, 2013
6:16 AM
There can be a "cool factor" to having or creating stuff like this. All of it doesn't have to be about perfect tone and can and should be about fun. If it ends up sounding like shit, then put it on the shelf as a neat conversation piece. Check out a cat named "Seasick Steve".
Scoltx
97 posts
Jun 28, 2013
6:45 AM
For shell's an aftermarket motorcycle signal light shell could work if you found the right diameter for those elements. You would have to come up with some kind of grill for it, but I'm sure I've seen some with a bezel holding in the lens that could be replaced with chrome mesh. Here's one without the bezel to give you an idea.
http://www.jpcycles.com/product/306-812
HawkeyeKane
1823 posts
Jun 28, 2013
6:52 AM
I thought about the vehicle light enclosure thing before. Right now, I have a plan for a wood shell. I've been meaning to delve this project for a while now, just haven't had time yet. I'll keep everyone posted on the progress though.
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Hawkeye Kane
nacoran
6887 posts
Jun 28, 2013
11:00 AM
Pretty cool, but it's got me thinking... what if you used a push button, and each button changed the effect?

(A dial response would be cool, but probably too slow to be practical... hang it from the mic stand.)

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Nate
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MP
2795 posts
Jun 28, 2013
3:39 PM
Good afternoon Hawk! thank you so much for plugging my services in the above megaphone video.

not a big deal, but it is Prah-dos rather than Praydose.

Praydose is what i did when i had my arthoplasty and the morphine didn't arrive from hospital pharmacy when i woke up in post op. These things can happen.
Ow Ow! :-)
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MP
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"making the world a better place, one harmonica at a time"

click user name [MP] for info-
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you can reach me via Facebook. Mark Prados
BronzeWailer
1047 posts
Jun 28, 2013
6:04 PM
Megaphone in action at world's largest busk in Bondi a couple of years back. A bit of harp from around 1:45.


BronzeWailer's YouTube


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