Contact mic

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Grindingandrust
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Contact mic

Post by Grindingandrust » Fri Dec 01, 2017 12:17 pm

I've been using a DIY piezo contact mic since my humble beginnings and I'm tired of it breaking so I'm going to buy one online. Any suggestions?
Thoughtcriminal1.bandcamp.com

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Bipolar Fucking Joe
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Re: Contact mic

Post by Bipolar Fucking Joe » Fri Dec 01, 2017 12:55 pm

Yeah, make them better.

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xdugef
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Re: Contact mic

Post by xdugef » Fri Dec 01, 2017 4:17 pm

Crank sturgeon makes good ones but basically you need to dip it in epoxy resin and / or plasti dip

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¼ dead
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Re: Contact mic

Post by ¼ dead » Sat Dec 02, 2017 1:26 pm

Bracing the part of the mic that receives most of the tension that leads to breaking against a rigid surface should help. There are a lot of ways to accomplish this, but it's up to you to figure out what works best for you.

I've gotten serviceable results just thumbtacking a piezo and the first inch or so of the cable soldered to it onto a piece of wood, placing the thumbtacks at various spots around the cable and element to anchor it tightly to the wood.

MKULTRA
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Re: Contact mic

Post by MKULTRA » Sun Dec 17, 2017 4:11 am

As Joe said make them better. Strain relief is important.
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"With enough gain you can achieve anything." - C.Rochambeau

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WhiteWarlock
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Re: Contact mic

Post by WhiteWarlock » Thu May 10, 2018 1:30 am

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RadioShack sold "PZM" microphones made by Crown
have one around here somewhere haven't used it in ages
"RatShack" Realistic also sold microphones made by Shure(sm58s) & EV
sort of like the "Realistic" Moog MG1
They are Quality
awesome inexpensive "Realistic" microphones
for fraction of price of the actual official branded same model microphones on ebay
because very few comprehend the model numbers of those "Realistic" microphones
see them going "cheap"
BTW dragging PZM around the garage is obviously not how boundary microphones are designed for being used recording
admit have done things like that before with PZM treating it as large metal plate piezo contact microphone
yet mine still works :P
https://tapeop.com/tutorials/1/pzm/

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Misomusist
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Re: Contact mic

Post by Misomusist » Thu May 10, 2018 5:34 am

You are confusing PZM and Piezo, it's a Pressure Zone Microphone, basically a condenser mic on a flat plate, it's not a contact mic in any respect.
I think trying to quantify music is one of the biggest wastes of time in the world, like discussing your favourite colour or deity or pizza topping. People should realise that and get on with their life.

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WhiteWarlock
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Re: Contact mic

Post by WhiteWarlock » Thu May 10, 2018 7:19 am

well aware of that
eye have actually made Potassium sodium tartrate tetrahydrate
aka Rochelle salt aka piezo electric crystals
starting by chemically making/forming/cooking "crystals"
posted that previous PZM info almost "verbatim" on freak animal's forum at 4am
because someone had no fucking clue what realistic PZM actually was
how you use PZM in recordings
or that it was actually made by CROWN
needed somewhere for archiving it here
"contact mic" was closest
so Nekrobumped this thread in the dead of night
have misused PZM before ages ago
for getting contact type scrapey sounds from the metal plate
let me post the chemical process for making raw piezo electric cystals
http://srjcstaff.santarosa.edu/~yataiiy ... rystal.pdf


satisfactory?
"homebrew" large piezo crystals are WAAAAAAY better quality
than the cheap ass bulk metal disks with tiny amount of crystal
EXPERIMENT

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Misomusist
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Re: Contact mic

Post by Misomusist » Fri May 11, 2018 12:58 pm

Which would explain the Realistic PZM on my workbench, with the audiograde cap, 9V battery and XLR rather than AA and a dinky 1/4" plasti-jack :wink:

There's also this fabby new thing called a wheel, you might want to check out.

I think trying to quantify music is one of the biggest wastes of time in the world, like discussing your favourite colour or deity or pizza topping. People should realise that and get on with their life.

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WhiteWarlock
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Re: Contact mic

Post by WhiteWarlock » Fri May 11, 2018 2:23 pm

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well then you get it...
hmmm
eye have those wheelie thingy's on my motorcycles
and even some on the multiple horse drawn
carriage/wagons/chariots
those are new?

used PZMs on Cymbals/extra overheads
and even as an extra high end range microphone on acoustic guitars
thanks for reminding me do 9v or phantom power mod
swap 1/4" for XLR
plus find the fucking missing battery cover for mine
actually had to make Piezo crystals for restoring crystal microphone element from the 1940s
Last edited by WhiteWarlock on Fri May 11, 2018 2:42 pm, edited 5 times in total.

MKULTRA
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Re: Contact mic

Post by MKULTRA » Fri May 11, 2018 2:35 pm

WhiteWarlock wrote:
Thu May 10, 2018 7:19 am

for getting contact type scrapey sounds from the metal plate
We have a winner. Have deployed in a very similar manner. Plus, a pro PZM from Radio Shack was a classic example of what made that company legend. Still have my Battery Club card somewhere.


Early to mid '80s I worked with an AE that mounted a PZM on a harness that drummers could comfortably wear around their chest. Getting a mono source of what the drummer was hearing added a very nice fill to the drum sound.
"With enough gain you can achieve anything." - C.Rochambeau

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WhiteWarlock
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Re: Contact mic

Post by WhiteWarlock » Fri May 11, 2018 3:08 pm

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actually have a couple strange self contained deArmond piezo transducer pickups from the 40's/50's
used for recording Cello/Upright Bass & other stringed acoustic instruments
plus one that says "Shadow" W.Germany obviously from the 70s
guessing the are piezo transducer pickups?
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WhiteWarlock
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Re: Contact mic

Post by WhiteWarlock » Fri May 11, 2018 3:23 pm


Eye have made Piezo drum triggers before...
from hacked 1/4' cables
you can even dip/seal them with something like plasti dip
should be able to buy them for almost nothing anymore on ebay
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