zebra50

META - Microphones New
« on: June 08, 2004, 12:07:51 PM »
Microphone Meta!



This is a meta-thread, made to allow members to keep track of the posts concerning this single issue - I will continue re-editing this first post.

- All should be contained in this first post - which is re-edited regularily.

- Everyone is welcome to reply with comments and pointers to things they consider relevant. This will be copy/pasted into the first post, if the meta-keeper finds it relevant. (We deeply dislike censorship here, but this  seems necessary for the sake of overview)

- On a regular basis all posts but the first will be deleted, and the thread will be bumped up to the top.

Stewart


--------------------------------------------
Forum links:

Commercial Mics & Schematics
------------------------------------------

http://www.groupdiy.com/index.php?topic=153
Sony C37 tube mic schematic and discussion

http://www.groupdiy.com/index.php?topic=9
http://www.groupdiy.com/index.php?topic=2047
http://www.groupdiy.com/index.php?topic=4496
Sony C800G tube mic schematic, DIY and discussion
C800 clone

http://www.groupdiy.com/index.php?topic=23666.0
SONY C800G PSU schematics...


http://www.groupdiy.com/index.php?topic=130
http://www.groupdiy.com/index.php?topic=3024
Brauner VM1 schematic and discussion, and Brauner Phantom C investigated

http://www.groupdiy.com/index.php?topic=582
CAD E200: discussion & link to manual with schematic

http://www.groupdiy.com/index.php?topic=435
Links to FET circuits (eg KM84) for large diaphragm mics

http://www.groupdiy.com/index.php?topic=266
http://www.groupdiy.com/index.php?topic=809
http://www.groupdiy.com/index.php?topic=1468
http://www.groupdiy.com/index.php?topic=1676
http://www.groupdiy.com/index.php?topic=2309
http://www.groupdiy.com/index.php?topic=4611
Some Neumann & other mic schematics

http://www.groupdiy.com/index.php?topic=3569
U87ai xformer data & schemo

http://www.groupdiy.com/index.php?topic=3223
Neumann TLM103

http://www.groupdiy.com/index.php?topic=273
Possible places for refubishment of Neumann capsules

http://www.groupdiy.com/index.php?topic=295
http://www.groupdiy.com/index.php?topic=554
http://www.groupdiy.com/index.php?topic=2922
http://www.groupdiy.com/index.php?topic=3022
Discussion of soundfield microphones, link to manual, and possible DIY project

http://www.groupdiy.com/index.php?topic=2543
Samson C3 investigated

http://www.groupdiy.com/index.php?topic=487
http://www.groupdiy.com/index.php?topic=509
http://www.groupdiy.com/index.php?topic=2299
http://www.groupdiy.com/index.php?topic=4501
http://www.groupdiy.com/index.php?topic=3435
Oktava MK012/219/319/MKL2500/5000 schematics and parts discussion

http://www.groupdiy.com/index.php?topic=950
Nice old grampian microphone pictures

http://www.groupdiy.com/index.php?topic=2712
http://www.groupdiy.com/index.php?topic=3012
AKG C12 transformer discussion; AKG C60 replacement transformer options

http://www.groupdiy.com/index.php?topic=1128
New AKG414 discussed

http://www.groupdiy.com/index.php?topic=4376
AKG 451 phantom power issues

http://www.groupdiy.com/index.php?topic=3744
MXL V77 investigated

http://www.groupdiy.com/index.php?topic=2531
MBHO mics and capsules

http://www.groupdiy.com/index.php?topic=2162
Didrik DeGeer microphone

http://www.groupdiy.com/index.php?topic=2199
RFT bottle tube mic

http://www.groupdiy.com/index.php?topic=2185
Reissmann Tube mics

http://www.groupdiy.com/index.php?topic=1556
RF interference in microphones

http://www.groupdiy.com/index.php?topic=3126
UM57 problems - bad problems!

http://www.groupdiy.com/index.php?topic=4786
M149 discussion

http://www.groupdiy.com/index.php?topic=4550
Soundelux Ifet pics

http://www.groupdiy.com/index.php?topic=3929
GT33 and 44 investigated

http://www.groupdiy.com/index.php?topic=3998
M-Audio Luna mic

http://www.groupdiy.com/index.php?topic=3203
Mic pics from AES show


DIY and modified mics
--------------------------------

http://www.groupdiy.com/index.php?topic=234
http://www.groupdiy.com/index.php?topic=1155
Pictures of Gus's FET and tube modified MXL & Rode mics

http://www.groupdiy.com/index.php?topic=1533
Scratch built square tube mic with EF86 (again by Gus)

http://www.groupdiy.com/index.php?topic=2539
Scratch built FET mic (again by Gus)

http://www.groupdiy.com/index.php?topic=4522
Soundclips of DIY U47 style mic

http://www.groupdiy.com/index.php?topic=4733
Tube mic circuit on old EV ribbon mic body (by zebra50)

http://www.groupdiy.com/index.php?topic=3357
Scott's 'Alice' DIY Microphone - very pretty

http://www.groupdiy.com/index.php?topic=217
http://www.groupdiy.com/index.php?topic=995
http://www.groupdiy.com/index.php?topic=1685
http://www.groupdiy.com/index.php?topic=4483
http://www.groupdiy.com/index.php?topic=3197
http://www.groupdiy.com/index.php?topic=3185
Mics for modification / discussion inc MXLs & others

http://www.groupdiy.com/index.php?topic=2603
http://www.groupdiy.com/index.php?topic=4587
http://www.groupdiy.com/index.php?topic=4477
Good long discussions about modifying MXL603s

http://www.groupdiy.com/index.php?topic=121
http://www.groupdiy.com/index.php?topic=624
http://www.groupdiy.com/index.php?topic=2272
http://www.groupdiy.com/index.php?topic=4751
ELA M251 clones: pictures & links; mic discussion

http://www.groupdiy.com/index.php?topic=76
http://www.groupdiy.com/index.php?topic=568
http://www.groupdiy.com/index.php?topic=1955
Use of 6072, EF72, 5840, 12AX7WA tubes in tube mic circuits

http://www.groupdiy.com/index.php?topic=633
Mods to a Nady TCM1050 large diaphragm mic

http://www.groupdiy.com/index.php?topic=4806
Mods to studio projects mic

http://www.groupdiy.com/index.php?topic=4590
MCA SP1 mic discussion

http://www.groupdiy.com/index.php?topic=1055
Solid state microphone schematic idea

http://www.groupdiy.com/index.php?topic=4187
DIY U87a

http://www.groupdiy.com/index.php?topic=2357
FET mod to china mics ('dorsey' mod)

http://www.groupdiy.com/index.php?topic=931
Dual diaphram cathode follower mic mod

http://www.groupdiy.com/index.php?topic=709
Thoughts on modding an AKG solid tube. Also information on MXL mic transformer

http://www.groupdiy.com/index.php?topic=1397
An optical microphone design!

http://www.groupdiy.com/index.php?topic=1078
How to remove the decals from MXL and other mics.

http://www.groupdiy.com/index.php?topic=2641
Duka's DIY mic shoot-out!

http://www.groupdiy.com/index.php?topic=2515
http://www.groupdiy.com/index.php?topic=4609
http://www.groupdiy.com/index.php?topic=4479
Caps & parts for modifying microphones

http://www.groupdiy.com/index.php?topic=2401
Article on digital microphones

http://www.groupdiy.com/index.php?topic=1651
DIY autotransformer thread

http://www.groupdiy.com/index.php?topic=4603
Problems with flux

http://www.groupdiy.com/index.php?topic=3777
Pattern switching problem in DIY mic

http://www.groupdiy.com/index.php?topic=3165
Relamming mic transformers




DIY Capsules
---------------------
http://www.groupdiy.com/index.php?topic=460
http://www.groupdiy.com/index.php?topic=5808#5808
DIY capsule building compilation - an excellent resource!

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.

http://www.groupdiy.com/index.php?topic=660
DIY mic capsule drawing

http://www.groupdiy.com/index.php?topic=3688
Machining of capsules

http://www.groupdiy.com/index.php?topic=586
Blue capsule comments

http://www.groupdiy.com/index.php?topic=2737
Identification of mics with '797' capsule.

http://www.groupdiy.com/index.php?topic=734
Dissection of a Russian mic capsule

http://www.groupdiy.com/index.php?topic=697
Neumann U87 capsule pictures and cleaning

http://www.groupdiy.com/index.php?topic=1520
Discussion of shanghai mic capsule identities

http://www.groupdiy.com/index.php?topic=1937
Gold coating of capsules

http://www.groupdiy.com/index.php?topic=2214
Materials for DIY capsules

http://www.groupdiy.com/index.php?topic=4578
Good capsule discussion

http://www.groupdiy.com/index.php?topic=3508
Polarisation voltages for capsules discussed - INTERESTING!

http://www.groupdiy.com/index.php?topic=3154
U87 capsule measurements


Not just the G7 project
------------------
The G7 Microphone Meta: Loads more info here
http://www.groupdiy.com/index.php?topic=59595

Note: many of these links are of interest for other tube DIY mic projects

http://www.groupdiy.com/index.php?topic=1117
http://www.groupdiy.com/index.php?topic=2605
http://www.groupdiy.com/index.php?topic=2193
Tubes for G7 and other mics discussed, inc. underheating tubes

http://www.groupdiy.com/index.php?topic=1219
http://www.groupdiy.com/index.php?topic=1839
http://www.groupdiy.com/index.php?topic=2693
Transformer options for G7 & other mics

http://www.groupdiy.com/index.php?topic=49
Thomas Holley's completed G7 in copper

http://www.groupdiy.com/index.php?topic=2500
Duka's G7

http://www.groupdiy.com/index.php?topic=495
http://www.groupdiy.com/index.php?topic=1124
http://www.groupdiy.com/index.php?topic=1362
http://www.groupdiy.com/index.php?topic=2398
http://www.groupdiy.com/index.php?topic=2226
http://www.groupdiy.com/index.php?topic=3876
Capsule possibilities for DIY mics etc

http://www.groupdiy.com/index.php?topic=197
G7 PCB orientation discussion

http://www.groupdiy.com/index.php?topic=241
http://www.groupdiy.com/index.php?topic=1179
G7 cap discussion

http://www.groupdiy.com/index.php?topic=2609
http://www.groupdiy.com/index.php?topic=274
http://www.groupdiy.com/index.php?topic=4922
http://www.groupdiy.com/index.php?topic=4929
http://www.groupdiy.com/index.php?topic=4644
http://www.groupdiy.com/index.php?topic=4414
http://www.groupdiy.com/index.php?topic=3860
1gigaohm grid resistor discussions

http://www.groupdiy.com/index.php?topic=65
Sources of microphone bodies for DIY (expensive!)

http://www.groupdiy.com/index.php?topic=26
http://www.groupdiy.com/index.php?topic=1783
http://www.groupdiy.com/index.php?topic=181
http://www.groupdiy.com/index.php?topic=2975
http://www.groupdiy.com/index.php?topic=2858
http://www.groupdiy.com/index.php?topic=2378
http://www.groupdiy.com/index.php?topic=2526
http://www.groupdiy.com/index.php?topic=4770
Discussion of mic body and grill materials, Sourcing hardware & mesh suppliers for microphone grills

http://www.groupdiy.com/index.php?topic=566
http://www.groupdiy.com/index.php?topic=1951
http://www.groupdiy.com/index.php?topic=1655
http://www.groupdiy.com/index.php?topic=2990
Troubleshooting the G7, inc. earthing and hum issues

http://www.groupdiy.com/index.php?topic=432
http://www.groupdiy.com/index.php?topic=1589
Types of tube mic cable & sources

http://www.groupdiy.com/index.php?topic=721
http://www.groupdiy.com/index.php?topic=1053
http://www.groupdiy.com/index.php?topic=1294
http://www.groupdiy.com/index.php?topic=2378
http://www.groupdiy.com/index.php?topic=2560
Some power supply (PSU) issues




DIY ribbon mics
-------------------------

http://www.groupdiy.com/index.php?topic=1062
General discussion with links - good!

http://www.groupdiy.com/index.php?topic=1108
The Lab dissects ribbon mics for your pleasure

http://www.groupdiy.com/index.php?topic=1553
http://www.groupdiy.com/index.php?topic=1641
Marik's very nice home made ribbon mic

http://www.groupdiy.com/index.php?topic=2017
Discussion of suitable ribbon materials

http://www.groupdiy.com/index.php?topic=2427
Old magazine articles on DIY ribbon mic

http://www.groupdiy.com/index.php?topic=1810
Circuits for measuring ribbon free air resonance

http://www.groupdiy.com/index.php?topic=1823
Some links to info on B&O ribbon mics

http://www.groupdiy.com/index.php?topic=2086
Transformer problems and discussion

http://www.groupdiy.com/index.php?topic=4533
RCA KB-2C "Bantam' mic document

http://www.groupdiy.com/index.php?topic=2047
http://www.groupdiy.com/index.php?topic=2317
http://www.groupdiy.com/index.php?topic=2243
Ribbon mic problems -  reribboning services

Cheap ribbon mic!
http://www.groupdiy.com/index.php?topic=4778

http://www.groupdiy.com/index.php?topic=4150
http://www.groupdiy.com/index.php?topic=3444
Magnets for ribbon mics

http://www.groupdiy.com/index.php?topic=3706
Article on modding Oktava ribbon mic

http://www.groupdiy.com/index.php?topic=310
Lundahl Xfo for ribbon mics


'Royer' Style tube mic mods
---------------------------------
http://www.groupdiy.com/index.php?topic=103
Power supply & wiring discussion

http://www.groupdiy.com/index.php?topic=4896
Dukasound's Royer-ised mic

http://www.groupdiy.com/index.php?topic=4829
Another tube option

http://www.groupdiy.com/index.php?topic=2276
http://www.groupdiy.com/index.php?topic=995
http://www.groupdiy.com/index.php?topic=4800
http://www.groupdiy.com/index.php?topic=4325
Miscellaneous Royer-ish discussions


--------------------------------------------
External links:

http://www.gyraf.dk/gy_pd/g7/gic.htm
Gyraf G7 DIY tube mic project

http://www.prosoundweb.com/recording/tapeop/tube_mic_25_1.shtml
http://www.mojaveaudio.com/press.html
Mojave Audio articles from Tape Op magazine and ProsoundWeb
(These are Dave 'Grizz' Royer's tube mods for small and large diaphragm condensor mics)

http://frank.pocnet.net/sheets/141/5/5840.pdf
:!: Data sheet for 5840 tube used in the Royer mics (and some altec tube mics) - 560kB large file

http://www.timcampbell.dk/mic/
http://www.timcampbell.dk/mics.htm
http://www.timcampbell.dk/micfab.htm
Tim Campbell's mic building pages

http://users.adelphia.net/~thomasholley/Microphone.htm
Thomas Holley's copper G7 microphone

http://www.omnipressor.com/Other/G7mics/SethMic.html
Seth Glassman's G7 mic

http://www.omnipressor.com/Other/G7mics/Z-mic1.html
http://www.omnipressor.com/Other/Other.html
Zebra50's G7 mic and other mic mods & information

http://www.scotthelmke.com/microphones.html
Scott Helmke's (scodiddly) very cool home built microphones

http://www.pfarrell.com/music/shanghaimic.html
Scott Dorsey's transformerless FET circuit for improving cheap condenser mics

http://www.omnipressor.com/Other/G7mics/gusmic.html
Gus Smalley's home made FET mic and mods to Oktava MC012s

http://www.conditionedresponse.com/DIY/microphones/index.html
http://music-club.rutgers.edu/headfonz/DebenhamOrig.pdf
Some links to old articles on building condenser mics and capsules, curtesy of PRR and Kent Stephenson.
:!: Some of these files are quite large.

http://www.lkmusic.co.nz/ribbonfix.htm
http://make_a_ribbon_mic.tripod.com/
DIY Ribbon Mic resources

https://www.neumann.com/infopool/general/
Lots of data at Neumann's "infopool"

http://www.neumann.com/forums/view.php?bn=neumann_mictec&key=1084193204&v=f
Intersting info on the grill used on Neumann

https://www.neumann.com/infopool/download.php?Datei=docu0002.PDF
Bore/Peus from Neumann on condenser microphone theory:
:!: LARGE ARTICLE 920KB PDF

http://recforums.prosoundweb.com/index.php/f/33/0
Klaus Heyne's Microphone Forum - some excellent mic related posts here

http://www.josephson.com/clean.txt
Capsule cleaning tips

http://www.wps.com/archives/tube-datasheets/Datasheets/Raytheon-SP-7073-360-20M/index.html
http://www.wps.com/archives/tube-datasheets/Datasheets/Raytheon-SP-1041-5M-8-61-WEA/index.html
Subminiature tube data



microphone collections and museums

http://www.coutant.org/contents.html
Good site with lots of mic pictures and information - especially RCA ribbon mics

http://www.k-bay106.com/doc.htm
Vintage broadcast mic resource

http://www.digitalvideo.com/mics.html
Another collection of photos

http://www.ronthemusicmaker.org/studio4.htm
L. Ron Hubbard's collection

http://www.roger.beckwith.btinternet.co.uk/bh/mics/micsmenu.htm
Vintage BBC (later became coles) mics

http://www.gefell-mics.com/factory_tour.htm
A tour around the Gefell factory

http://www.transaudioelite.com/braunervideo.html
Video of mic manufacturing at Brauner

[LAST UPDATED 19th January 2005 18.15 BST by zebra50]
« Last Edit: December 22, 2009, 09:56:28 AM by gyraf »
Ribbon microphone services
http://www.xaudia.com
Microphone blog


gyraf

META - Microphones
« Reply #1 on: April 11, 2005, 03:55:32 AM »
..cleaned..
..note to self: don't let Harman run your company..

gyraf

META - Microphones
« Reply #2 on: April 11, 2005, 03:56:06 AM »
34mm dual diaphragm capsule dissection
http://www.groupdiy.com/index.php?topic=6804
..note to self: don't let Harman run your company..

clintrubber

META - Microphones
« Reply #3 on: December 13, 2005, 07:43:57 AM »
Compiled info, good resource on microphone principles:

http://www.freewebs.com/tekker/harveygerstmicthreads.htm

Quote
Harvey Gerst - Mic Threads Title: Harvey Gerst's Microphone Threads Body:
The 'BIG' Mic Thread!

This page is dedicated to brining you one of the most informative threads on microphone design &  placement on the web, without all the useless banter. Now you too can pick the brain of one of Homerecording.com's MVP's Harvey Gerst.

gyraf

META - Microphones
« Reply #4 on: January 09, 2006, 04:10:33 AM »
..note to self: don't let Harman run your company..

rodabod

META - Microphones
« Reply #5 on: February 07, 2006, 05:03:40 PM »
Here are a few of my own links. Apologies if any appear above.

Various mic datasheets; Beyer, Telefunken, Neumann, AKG, etc. :

http://www.danalexanderaudio.com/neumann.html

Vintage (mainly German) microphone page including Siemens, Neumann, Melodium, Reissmann, Telefunken, many bottles, Beyer, plus audio samples! :

http://ds-audioservice.de/mikrofone-fotos/mikro2.html

Klangfilms bandmikrofon (Siemens / Ela ribbon microphone). The first ever ribbon! :

http://www.fsfl.se/backspegel/klang_bandmikr.html

Ed Anderson's mic guide - Reslo, Gefell, AKG.... Some useful information. :

http://edanders.home.comcast.net/

Interesting retailer of Russian microphones (AEG, Lomo, etc) with some useful information. :

http://valvemics.webzone.ru/micsmain.htm

The bottle Mic page - "From total war.... To totally untalented!" :

http://www.giganova.com/bottle_mics.html
Quote from: tv
punchy fat bastard chip

PatinaCreme

6 micron PET film/ capsule diaphram material
« Reply #6 on: February 08, 2006, 03:36:46 PM »
discipline is the first step to bliss

rodabod

META - Microphones
« Reply #7 on: February 21, 2006, 06:52:37 PM »
"Saturn Sound" DIY microphone construction details:

http://www.saturn-sound.com/products/valve%20microphones.htm

Mic information regarding AKG C12, Neumanns, Elam, Calrec, including construction details and schematics (includes Calrec schematics):

http://www.saturn-sound.com/curio's.htm
Quote from: tv
punchy fat bastard chip

gyraf

META - Microphones
« Reply #8 on: March 04, 2006, 05:23:48 AM »
China-mic bias-mod pictorial - adjusting the sloppy-set bias in cheap chineese condenser mics:

http://www.groupdiy.com/index.php?topic=14003

and:
http://aronnelson.com/gallery/Chinamic-biasmod-pictorial

Jakob E.
..note to self: don't let Harman run your company..



clintrubber

META - Microphones
« Reply #10 on: December 03, 2006, 06:55:15 AM »
For completeness: Lo-Fi mic made from an old telephone

http://www.student.ru.nl/r.kerkhof/Taas/Custom/Tmic.htm
(in Dutch, but has pics & schematic)

gyraf

META - Microphones
« Reply #11 on: January 13, 2007, 04:44:05 AM »
..note to self: don't let Harman run your company..

gyraf

META - Microphones
« Reply #12 on: February 02, 2007, 04:07:36 AM »
Complete DIY Ribbon mic tutorial - nice and detailed .PDF:

http://www.rickshawrecords.com/ribbonmic/AUSTIN_Ribbon_Mic_Tutorial.pdf

Jakob E.
..note to self: don't let Harman run your company..

seavote

link down in meta
« Reply #13 on: February 05, 2007, 08:36:29 PM »
zebra , the link to gerhart bore s mic article from the neumann site is not working. this link seems to work: if you get a chance to update the link it will get a great mic overveiw to a lot of people. thx. here is the new link:
http://www.neumann.com/download.php?download=docu0002.PDF
Everyday is a gift. Thats why it's called the present

Flatpicker

META - Microphones
« Reply #14 on: February 06, 2007, 12:25:01 PM »
Zebra hasn't been active here for a couple of years now. Someone needs to take over this META. Not me - I'm trying to manage 2 others that I don't have time for already.

Any takers?  :?:

META - Microphones
« Reply #15 on: February 07, 2007, 07:44:39 PM »
How bout a WIKI where everyone can do it?
WIKI for Prodigy Guys

I set a wiki section up on my site that can be edited.  It is not searchable by google bots, so it will just be you guys :)

Don't abuse my site :P

S!
Jason

CJ

Re: META - Microphones
« Reply #16 on: November 06, 2009, 04:43:55 AM »
bump for rehab...

 :D
If I can't fix it, I can fix it so nobody else can!
Frank's Tube Page: www.mif.pg.gda.pl/homepages/frank/vs.html
Guitar Amps: http://bmamps.com/Tech_sch.html

mad.ax

Re: META - Microphones
« Reply #17 on: December 22, 2009, 05:53:08 AM »
SONY C800G PSU schematics...
http://www.groupdiy.com/index.php?topic=23666.0

Posted it here because this old meta is were the others C800G links are....

Axel


 

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