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R/E/P => R/E/P Archives => Klaus Heyne's Mic Lab Stickies => Topic started by: Klaus Heyne on February 02, 2009, 04:31:14 pm

Title: Microphone Schematics and Circuit Descriptions
Post by: Klaus Heyne on February 02, 2009, 04:31:14 pm
Step right up and post your schematics, whether factory-issued or hand-drawn, here;
Please label them clearly (for example: "AKG C24 MK II"...

When perusing any of this material posted here, no claims of responsibility are made  by the poster, moderator, or host company of this site as to accuracy or potentially catastrophic mic (or human health) failure.

If you need circuit info that is officially sanctioned and blessed by the mic's manufacturer, approach the manufacturer (or its successor) directly.

And always remember when working on high voltages inside mics and power supplies- one hand works, and the other hand stays behind your back!

Now enlighten the community and post your treasures!
Title: Telefunken ELA M260/M261 schematic
Post by: Markus Sauschlager on February 02, 2009, 09:39:04 pm
Great idea Klaus!

Here we go:

Title: Telefunken ELA M250E/M251E schematic
Post by: Markus Sauschlager on February 02, 2009, 09:40:13 pm
Title: AKG C24 (MK1) schematic
Post by: Markus Sauschlager on February 02, 2009, 09:42:25 pm
Title: AKG C414comb schematic
Post by: Markus Sauschlager on February 02, 2009, 09:44:24 pm
Title: AKG Schematics Collection
Post by: studiochap on February 02, 2009, 09:49:14 pm
I recently stumbled on Corey Eng's "Pro Audio Repair Site", on which there's a useful collection of schematics for AKG ,Neumann, and Telefunken. I hadn't seen the C12 interconnection diagram before.

http://www.geocities.com/siliconvalley/peaks/5212/start.htm

Corey used to work for AKG in USA.
Title: The Neumann Story - Ernst Weiss -Studio Sound Part 1
Post by: studiochap on February 03, 2009, 01:31:34 am
Originally from Studio Sound July 1984, perhaps this was a reprint from RE/P or MIX.Interesting Neumann history but with serious paydirt about capsule manufacture and test on page 4. I've scanned rather poor copies from the '90s.
index.php/fa/11184/0/
Title: Re: The Neumann Story - Ernst Weiss -Studio Sound Part 2
Post by: studiochap on February 03, 2009, 01:34:45 am
index.php/fa/11185/0/
Title: Re: The Neumann Story - Ernst Weiss -Studio Sound Part 3
Post by: studiochap on February 03, 2009, 01:36:42 am
index.php/fa/11186/0/
Title: Re: The Neumann Story - Ernst Weiss -Studio Sound Part 4
Post by: studiochap on February 03, 2009, 01:40:21 am
index.php/fa/11187/0/
Title: AKG C28
Post by: matucha on February 03, 2009, 06:43:09 pm
http://recforums.prosoundweb.com/index.php/fa/11150/1681/

http://recforums.prosoundweb.com/index.php/fa/11152/0/1681/

http://recforums.prosoundweb.com/index.php/fa/11153/1681/

http://recforums.prosoundweb.com/index.php/fa/11155/0/1681/

http://recforums.prosoundweb.com/index.php/fa/11156/0/1681/

http://recforums.prosoundweb.com/index.php/fa/11157/0/1681/

http://recforums.prosoundweb.com/index.php/fa/11158/0/1681/

http://recforums.prosoundweb.com/index.php/fa/11159/0/1681/
Title: Re: AKG C28
Post by: studiochap on February 03, 2009, 09:06:27 pm
Overlooked when I made the C28 scans...
index.php/fa/11202/0/
Title: Re: Microphone Schematics and Circuit Descriptions
Post by: Michael Walters on February 04, 2009, 01:56:41 am
Schematic for the AKG C60 and the N60A power supply.

index.php/fa/11204/0/
Title: Schematic for AKG C12a and N12a psu.
Post by: studiochap on February 04, 2009, 01:00:12 pm
Schematic for AKG C12a and N12a psu.index.php/fa/11210/0/
Title: AKG C414 B-TL schematic
Post by: studiochap on February 04, 2009, 01:07:23 pm
AKG C414 B-TL schematicindex.php/fa/11211/0/
Title: U67 & NU67
Post by: Eric H. on September 26, 2009, 06:48:12 am
Here are all the U67 schematics I got (from Neumann and the net) when I was searching for the one corresponding to my mic.
you will find here in the following order:
-U67u-00-00-00S
-U67u-00-00-03S
-U67 Telefunken
-U67 930-01
-NU67u-930-00
-NU67 Telefunken
-NU67u-930-06
-NU67-930-06

Title: Scans of original ELA M 250/251 Manual/Brochure
Post by: Markus Sauschlager on December 17, 2009, 06:58:18 pm
can be found here.
Title: Re: Scans of original ELA M 250/251 Manual/Brochure
Post by: Markus Sauschlager on December 30, 2009, 06:41:31 pm
P.S.:
For download of the brochure's pages in full resolution, first click on the "Herunterladen"-button above the selected picture, and then "Foto herunterladen"

index.php/fa/13981/0/

Title: Re: Microphone Schematics and Circuit Descriptions
Post by: TrueThomas on August 24, 2010, 11:15:58 am
If anyone has really detailed explanations of circuits, I'd love to see them on this thread too, especially for the often discussed circuits such as the U87, I'd really like to read an explanation that goes through and explains every part of the circuit in detail.
Title: Sony C38B schematic
Post by: studiochap on September 01, 2010, 09:32:48 am
Here is a re-up of the Sony C38B schematic,

Cheers,

Gwynindex.php/fa/15347/0/
Title: Re: Microphone Schematics and Circuit Descriptions
Post by: alizaliz on March 06, 2011, 07:50:36 am
hi
Who can advise me?:(Sad Sad

I need to Akg C414 XlS schematics

thx