New Microphone Meta

[seavote]

BASIC MICROPHONE 101 Links

http://www.neumann.com/download.php?download=docu0002.PDF
http://www.freewebs.com/tekker/harveygerstmicthreads.htm

http://www.dpamicrophones.com/
follow link to Microphone University
http://mixguides.com/microphones/basics/audio_glossary_basic_microphone/
Glossary of basic Microphone Terms
http://www.groupdiy.com/index.php?topic=287035#287035
Sound Test Site that allows you to a,b many different Mics
http://www.coutant.org/1.html
Photos,info and sound samples of classic Mics
http://recforums.prosoundweb.com/index.php/f/33/0/
Klaus Heynes Mic Lab   Link to a Great Mic Forum
http://mixguides.com/microphones/basics/
MIX Magazines Microphone resources
http://www.elektroakustika.cz/historic_microphones.html
Site w/large amount of mic data and schematics
http://recordinghacks.com/2009/01/22/how-its-made-neumann-u87/
How its Made TV Show at the Nuemann Factory

MICROPHONE SCHEMATICS DATA BASE
http://www.sdiy.org/oid/mics.html

COMMERCIAL MICS
Ultimate Microphone Data Base
http://recordinghacks.com/microphones
Great Site Tons of Mic Photos And Info
http://www.saturn-sound.com/index/a-c.htm
COMMERCIAL MIC DATA BASE By Manufacturer
http://www.groupdiy.com/index.php?topic=21268

MICROPHONE MODS
http://www.groupdiy.com/index.php?topic=21266
Database of Microphone mods



DIY MICS
http://www.groupdiy.com/index.php?topic=21267.msg250446#msg250446
Database of DIY Mics



RIBBON MICS
D.I.Y.,Mods and Discussion
http://www.groupdiy.com/index.php?topic=24012.msg285403#msg285403


MIC BODIES FOR DIY
http://www.groupdiy.com/index.php?topic=20248
Good thread,discusses some methods and material sources


Capsules For DIY
[Large  Diaphragm Condenser

http://www.groupdiy.com/index.php?topic=19961&highlight=mic+capsule
Dont Believe the Thread Title. Good Discussion and Gus's tips for mounting a capsule.
http://www.groupdiy.com/index.php?topic=586
Blue Capsules
http://www.groupdiy.com/index.php?topic=9613&view=next
Red Lollipop Capsule
http://www.groupdiy.com/index.php?topic=549&highlight=
Center Terminated or Edge Terminated??


http://www.groupdiy.com/index.php?topic=30766.msg372876#msg372876
http://www.groupdiy.com/index.php?topic=26975&highlight=
http://www.groupdiy.com/index.php?topic=1362&highlight=
Sources for Capsules


http://www.groupdiy.com/index.php?topic=895&highlight=
Discussion on Chinese capsules
http://www.groupdiy.com/index.php?topic=2737&highlight=mount+mic+capsule
Lists Mics with 797 capsules
http://www.groupdiy.com/index.php?topic=19946&postdays=0&postorder=asc&highlight=mount+mic+capsule&start=0
Discussion on peluso and other capsules
http://www.groupdiy.com/index.php?topic=1124&highlight=
G7 and Peluso capsules
http://www.groupdiy.com/index.php?topic=19908&postdays=0&postorder=asc&start=0
Mounting a Peluso CEK12  scroll down to answer from Peluso mics







DIY MIC CAPSULES
http://www.groupdiy.com/index.php?topic=4578&highlight=akg+mic
Great discussion, good place to start
http://www.groupdiy.com/index.php?topic=460
DIY Capsule Compilation (a must read!)
http://www.10000cows.com/diyaudio.htm
Dale106dot2s' web site great info photos
http://www.groupdiy.com/index.php?topic=9&postdays=0&postorder=asc&start=30
Some discussion of capsule design, holes in backplates, air gaps and more. (some bad links but filled with info)
http://www.groupdiy.com/index.php?topic=660
DIY mic capsule drawing(some bad links but filled with info)
http://www.groupdiy.com/index.php?topic=1937&highlight=
Getting gold onto Diaphragm
http://www.groupdiy.com/index.php?topic=6380&highlight=
Capsule Rebuild Thread (plenty of useful info)
http://www.groupdiy.com/index.php?topic=2214
Capsule Building Materials Discussion
http://www.timcampbell.dk/mic/
Tim Cambells photos, diaphragm tensioning jig,drilling capsules etc.
http://www.groupdiy.com/index.php?topic=251528#251528
Budigs DIY Mic Capsules(good discussion follows)
http://www.htl.moedling.at/htl1/htl/Innotivanhang2.htm
Auto Tuning Condenser Mic Membranes
http://www.groupdiy.com/index.php?topic=3508
Capsule Polarization
http://www.groupdiy.com/index.php?topic=6790&highlight=
http://www.conditionedresponse.com/DIY/microphones/Rwillmic.pdf
R Wiliamson Capsule Thread and Original Article
http://www.groupdiy.com/index.php?topic=3154
U87 Capsule Measurements

OMNIs
http://www.groupdiy.com/index.php?topic=9595&highlight=
measurement mics discussion, "recording with" and phase effects


MIC MAINTENANCE and TROUBLESHOOTING

http://www.groupdiy.com/index.php?topic=22287
http://www.josephson.com/clean.txt
Capsule cleaning tips
http://www.groupdiy.com/index.php?topic=18693&highlight=akg+mic
Trouble shooting an AKG C 414eb. lots of good ideas,discussion
http://www.groupdiy.com/index.php?topic=273
Possible places for refubishment of Neumann capsules
http://www.groupdiy.com/index.php?topic=21015
http://www.groupdiy.com/index.php?topic=273619#273619
mic body maintenance
http://www.groupdiy.com/index.php?topic=2086
Ribbon Mic Transformer problems and discussion
http://www.groupdiy.com/index.php?topic=1556
RF Interference
http://www.hinton-instruments.co.uk/reference/microphones/mictable.htm
Find Cables For Vintage Mics (thanks to Ferqband)
http://www.groupdiy.com/index.php?topic=25239&highlight=
Dynamic Capsule Repair,How to strip laqer off small gauge wire
http://www.groupdiy.com/index.php?topic=26061&highlight=
Wire type for Condensor Mic Capsule Repair
http://www.groupdiy.com/index.php?topic=28284&highlight=
Noise from Omni and Figure8, Cardoid is fine

Miscellaneous
http://www.groupdiy.com/index.php?topic=2605
Mini tube discussion plus discusion and links about ef14,uf14 swap for Neumann mics
http://www.beis.de/Elektronik/CM2/CM2.html
Condensor capsule tension.frequency measurements jig
http://www.analog.com/library/analogDialogue/archives/41-09/digital_microphone.html
sources of noise in condensor mics

 

[12afael]

Condenser Microphone Capsule Measurement
http://www.beis.de/Elektronik/CM2/CM2.html

cheers
Rafael

 

[clintrubber]

Discussion of the 3 main sources of electrical noise in condensor mikes:

http://www.analog.com/library/analogDialogue/archives/41-09/digital_microphone.html


or directly as pdf:

http://www.analog.com/library/analogDialogue/archives/41-09/digital_microphone.pdf


Regards,

Peter

 

[gyraf]

Some interesting Technical papers from Neumann, many in English:

http://www.neumann.com/?lang=en&id=company_publications_documents

Jakob E.

 

[clintrubber]

As spotted by Jim / ZAPNSPARK @ the Micbuilders-list:

http://recordinghacks.com/2008/11/01/chinese-ribbon-microphone-designs/

There is a very good article by Michael Joly on Chinese ribbon
microphone types over at recordinghacks.com

Bye,

Peter

 

[gyraf]

http://www.sdiy.org/oid/mics.html - many mic schematics and manuals

 

[Marik]

As spotted by Jim / ZAPNSPARK @ the Micbuilders-list:

http://recordinghacks.com/2008/11/01/chinese-ribbon-microphone-designs/

There is a very good article by Michael Joly on Chinese ribbon
microphone types over at recordinghacks.com

Please note, this article has technical mistakes and wrong information. Some of it I have addressed many times on different forums, but for some unexplainable reason M. Joly completely ignores it, with no explanation. So here it goes:

1) Re: "Short ribbon/long path". Historically, the short ribbons are those of about 1" long. In this group we could put Beyer 130, 160, Shure 330, Coles 4038, among others. It seems technically incorrect to put into the same group ribbons, which are as much as 45mm (!!) long. This gives a wrong message to readers, who will obviously think that 45mm ribbons are “short" ones, which they are absolutely not!

I have no idea why M. Joly keeps refering to them as "short". If anything, they should be called “medium ribbons”, instead, which is appropriate technically, while still clearly distinguishing those two Chinese types.

2) Joly completely ignores the fact that the front-to-back acoustic path in what he calls “long ribbons/short path in fact, is variable along almost the entire length of the ribbon. When it is added up in fact, the path is not as short as shown, and creates a complex acoustical behavior.

3) All the passages about the frequency response, "shelves and peaks", etc. are based on wrong graphs and as such have very little value. In fact, the graphs published do not look like those of ribbon mics, at all. For example, look at the "real" ones:

http://www.coutant.org/rca77d/bi-f.gif

or:

http://www.wesdooley.com/images/R84curve.jpg

(Yes, this is AEAR84, on which according to M. Joly, the Apex205 and alike are based, so just compare the graphs)

4) The passage: “The thicker magnets allow greater magnetic force to be concentrated on the ribbon, and thus make up for some sensitivity loss due to the shorter length of ribbon exposed to the magnet flux”

is only half-true. The ribbon structure in question is a completely different design. The thicker magnets indeed allow greater magnetic force, however, unlike M. Joly tries to present it, this is only a part of sensitivity equation. It is as important to point out that the sensitivity in this case is also an acoustical function of the increased size of the magnets.
As a side note, in an optimal ribbon design the some sensitivity loss could be easily compensated by the transformer design.

5) The passage: “When ribbon signals are summed together electrically this produces a complex sum & difference signal that lends these mics a “thicker” but somewhat less true-to-life sound.”

is again only half-true. The “thicker” sound of the dual ribbons is not because of their sum and difference, but because of the much longer and complex aforementioned acoustical front-to-back path.

Hopefully, it helps.

Best, M

 

[gyraf]

Why is this tube different from all other tubes? - on Myths and facts about the VF14
http://www.groupdiy.com/index.php?topic=32979

 

[rodabod]

Czech microphone data page with schematics, and home-made ribbon mic. This guy is a bit of a bad-ass:

http://www.elektroakustika.cz/historic_microphones.html

 

[hakanai]

One of the threads on capsule design and construction had a few key dead links and after some hunting I found these two papers by Guy Torio on single and dual diaphragm capsule designs. As well as a few patents.

I'll host all of these files for as long as i can as well as send them to the group email

https://files.me.com/donfierro/gzqdim

 

[gyraf]

Debenham Capsule Questions
http://groupdiy.com/index.php?topic=57782.0

On how to read the Debenham Capsule drawings - link to aluminized mylar source

 

[12afael]

mechanical improvement of microphones

https://groupdiy.com/index.php?topic=67474.0

 

[12afael]

https://groupdiy.com/index.php?topic=52037.0#:~:text=Zener%20noise%20is%20a%20very,ve%20just%20crossed%20this%20border.

zener noise in schoeps style circuit (and others).

 

[emrr]

remember the Meta?

 

[seavote]

Yes I do!! Been inactive for a long time but I still check in from time to time