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Author Topic: Microphone Schematics and Circuit Descriptions  (Read 10580 times)

Klaus Heyne

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Microphone Schematics and Circuit Descriptions
« 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!
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Klaus Heyne
German Masterworks
www.GermanMasterworks.com

Markus Sauschlager

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Telefunken ELA M260/M261 schematic
« Reply #1 on: February 02, 2009, 09:39:04 pm »

Great idea Klaus!

Here we go:

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Markus Sauschlager

- Schauma amal, dann werma schon sehen... -

"...and do not forget that marketing is b.s. with a sugar coating." - O. Archut, 06 March 2009

Markus Sauschlager

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Telefunken ELA M250E/M251E schematic
« Reply #2 on: February 02, 2009, 09:40:13 pm »

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Markus Sauschlager

- Schauma amal, dann werma schon sehen... -

"...and do not forget that marketing is b.s. with a sugar coating." - O. Archut, 06 March 2009

Markus Sauschlager

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AKG C24 (MK1) schematic
« Reply #3 on: February 02, 2009, 09:42:25 pm »

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Markus Sauschlager

- Schauma amal, dann werma schon sehen... -

"...and do not forget that marketing is b.s. with a sugar coating." - O. Archut, 06 March 2009

Markus Sauschlager

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AKG C414comb schematic
« Reply #4 on: February 02, 2009, 09:44:24 pm »

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Markus Sauschlager

- Schauma amal, dann werma schon sehen... -

"...and do not forget that marketing is b.s. with a sugar coating." - O. Archut, 06 March 2009

studiochap

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AKG Schematics Collection
« Reply #5 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.
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Gwyn Mathias
Odessa Wharf Studios ( now down the tubes after 14yrs...RIP )
Pro Audio Survivor...Smile

"What,Me Worry?" Alfred E. Neumann (...or was it Newmann?Smile

Electrical Theory by Joseph Lucas (inventor of the Self-Dimming Headlamp):
"Smoke is the thing that makes electrical circuits work; we know this to be true because every time one lets the smoke out of the electrical system, it stops working"

studiochap

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The Neumann Story - Ernst Weiss -Studio Sound Part 1
« Reply #6 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/
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Gwyn Mathias
Odessa Wharf Studios ( now down the tubes after 14yrs...RIP )
Pro Audio Survivor...Smile

"What,Me Worry?" Alfred E. Neumann (...or was it Newmann?Smile

Electrical Theory by Joseph Lucas (inventor of the Self-Dimming Headlamp):
"Smoke is the thing that makes electrical circuits work; we know this to be true because every time one lets the smoke out of the electrical system, it stops working"

studiochap

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Re: The Neumann Story - Ernst Weiss -Studio Sound Part 2
« Reply #7 on: February 03, 2009, 01:34:45 am »

index.php/fa/11185/0/
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Gwyn Mathias
Odessa Wharf Studios ( now down the tubes after 14yrs...RIP )
Pro Audio Survivor...Smile

"What,Me Worry?" Alfred E. Neumann (...or was it Newmann?Smile

Electrical Theory by Joseph Lucas (inventor of the Self-Dimming Headlamp):
"Smoke is the thing that makes electrical circuits work; we know this to be true because every time one lets the smoke out of the electrical system, it stops working"

studiochap

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Re: The Neumann Story - Ernst Weiss -Studio Sound Part 3
« Reply #8 on: February 03, 2009, 01:36:42 am »

index.php/fa/11186/0/
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Gwyn Mathias
Odessa Wharf Studios ( now down the tubes after 14yrs...RIP )
Pro Audio Survivor...Smile

"What,Me Worry?" Alfred E. Neumann (...or was it Newmann?Smile

Electrical Theory by Joseph Lucas (inventor of the Self-Dimming Headlamp):
"Smoke is the thing that makes electrical circuits work; we know this to be true because every time one lets the smoke out of the electrical system, it stops working"

studiochap

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Re: The Neumann Story - Ernst Weiss -Studio Sound Part 4
« Reply #9 on: February 03, 2009, 01:40:21 am »

index.php/fa/11187/0/
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Gwyn Mathias
Odessa Wharf Studios ( now down the tubes after 14yrs...RIP )
Pro Audio Survivor...Smile

"What,Me Worry?" Alfred E. Neumann (...or was it Newmann?Smile

Electrical Theory by Joseph Lucas (inventor of the Self-Dimming Headlamp):
"Smoke is the thing that makes electrical circuits work; we know this to be true because every time one lets the smoke out of the electrical system, it stops working"

matucha

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AKG C28
« Reply #10 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/
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studiochap

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Re: AKG C28
« Reply #11 on: February 03, 2009, 09:06:27 pm »

Overlooked when I made the C28 scans...
index.php/fa/11202/0/
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Gwyn Mathias
Odessa Wharf Studios ( now down the tubes after 14yrs...RIP )
Pro Audio Survivor...Smile

"What,Me Worry?" Alfred E. Neumann (...or was it Newmann?Smile

Electrical Theory by Joseph Lucas (inventor of the Self-Dimming Headlamp):
"Smoke is the thing that makes electrical circuits work; we know this to be true because every time one lets the smoke out of the electrical system, it stops working"

Michael Walters

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Re: Microphone Schematics and Circuit Descriptions
« Reply #12 on: February 04, 2009, 01:56:41 am »

Schematic for the AKG C60 and the N60A power supply.

index.php/fa/11204/0/
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"An object at rest CANNOT BE STOPPED!!!"

studiochap

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Schematic for AKG C12a and N12a psu.
« Reply #13 on: February 04, 2009, 01:00:12 pm »

Schematic for AKG C12a and N12a psu.index.php/fa/11210/0/
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Gwyn Mathias
Odessa Wharf Studios ( now down the tubes after 14yrs...RIP )
Pro Audio Survivor...Smile

"What,Me Worry?" Alfred E. Neumann (...or was it Newmann?Smile

Electrical Theory by Joseph Lucas (inventor of the Self-Dimming Headlamp):
"Smoke is the thing that makes electrical circuits work; we know this to be true because every time one lets the smoke out of the electrical system, it stops working"

studiochap

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AKG C414 B-TL schematic
« Reply #14 on: February 04, 2009, 01:07:23 pm »

AKG C414 B-TL schematicindex.php/fa/11211/0/
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Gwyn Mathias
Odessa Wharf Studios ( now down the tubes after 14yrs...RIP )
Pro Audio Survivor...Smile

"What,Me Worry?" Alfred E. Neumann (...or was it Newmann?Smile

Electrical Theory by Joseph Lucas (inventor of the Self-Dimming Headlamp):
"Smoke is the thing that makes electrical circuits work; we know this to be true because every time one lets the smoke out of the electrical system, it stops working"

Eric H.

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U67 & NU67
« Reply #15 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

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eric harizanos

Markus Sauschlager

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Scans of original ELA M 250/251 Manual/Brochure
« Reply #16 on: December 17, 2009, 06:58:18 pm »

can be found here.
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Markus Sauschlager

- Schauma amal, dann werma schon sehen... -

"...and do not forget that marketing is b.s. with a sugar coating." - O. Archut, 06 March 2009

Markus Sauschlager

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Re: Scans of original ELA M 250/251 Manual/Brochure
« Reply #17 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/

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Markus Sauschlager

- Schauma amal, dann werma schon sehen... -

"...and do not forget that marketing is b.s. with a sugar coating." - O. Archut, 06 March 2009

TrueThomas

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Re: Microphone Schematics and Circuit Descriptions
« Reply #18 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.
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studiochap

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Sony C38B schematic
« Reply #19 on: September 01, 2010, 09:32:48 am »

Here is a re-up of the Sony C38B schematic,

Cheers,

Gwynindex.php/fa/15347/0/
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Gwyn Mathias
Odessa Wharf Studios ( now down the tubes after 14yrs...RIP )
Pro Audio Survivor...Smile

"What,Me Worry?" Alfred E. Neumann (...or was it Newmann?Smile

Electrical Theory by Joseph Lucas (inventor of the Self-Dimming Headlamp):
"Smoke is the thing that makes electrical circuits work; we know this to be true because every time one lets the smoke out of the electrical system, it stops working"

alizaliz

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Re: Microphone Schematics and Circuit Descriptions
« Reply #20 on: March 06, 2011, 07:50:36 am »

hi
Who can advise me?:(Sad Sad

I need to Akg C414 XlS schematics

thx
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