Electronics > Projects, Designs, and Technical Stuff

Fet preamp circuits for dynamic microphones

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arno:
Hi,

a source for really good microphone preamp schematics was Studer's FTP server (http://ftp.studer.ch/). It went down several years ago, but you can find a backup at https://www.reeltoreel.nl/studer/Public/Products/

73 de Arno, DL2SSB

Edit: Please, take a look at the 990 input circuit. There is no FET, instead a BC327. https://www.reeltoreel.nl/studer/Public/Products/Mixing_Analog/990/Manuals/

magic:
Nice avatar ;)
But seriously, how many mega bytes to get those few PDFs? :scared:


--- Quote from: Zero999 on August 08, 2020, 10:55:51 am ---The downside is no one else can see any of the schematics and make suggestions/corrections. Suppose you and I discuss this via email and I make a few mistakes in my responses, you probably won't spot them.

--- End quote ---
OP has a working circuit and is looking for guinea pigs, not for suggestions. I semi-expect that you have just triggered him to come back and post yet another boring post with all the same stuff about "I would prefer email" and why he doesn't care about your concerns in the slightest. So don't bother with trickery and just admit that you are a principled exhibitionist who can't stand a bit of privacy.

OP, maybe try DIYAudio. As you see, not much response here. Truth is, we all are exhibitionists, terminally lazy and upvote whores. We only read threads for pictures (you have posted none) and write answers for those "thanked" counters on our profiles (nothing like that by email) :P

Zero999:

--- Quote from: magic on August 08, 2020, 07:45:35 pm ---Nice avatar ;)
But seriously, how many mega bytes to get those few PDFs? :scared:


--- Quote from: Zero999 on August 08, 2020, 10:55:51 am ---The downside is no one else can see any of the schematics and make suggestions/corrections. Suppose you and I discuss this via email and I make a few mistakes in my responses, you probably won't spot them.

--- End quote ---
OP has a working circuit and is looking for guinea pigs, not for suggestions. I semi-expect that you have just triggered him to come back and post yet another boring post with all the same stuff about "I would prefer email" and why he doesn't care about your concerns in the slightest. So don't bother with trickery and just admit that you are a principled exhibitionist who can't stand a bit of privacy.

OP, maybe try DIYAudio. As you see, not much response here. Truth is, we all are exhibitionists, terminally lazy and upvote whores. We only read threads for pictures (you have posted none) and write answers for those "thanked" counters on our profiles (nothing like that by email) :P

--- End quote ---
He hasn't actually posted any schematics. If he starts to be a problem here, then I'm sure the moderators will ban him soon.

magic:

--- Quote from: Zero999 on August 08, 2020, 09:18:08 pm ---He hasn't actually posted any schematics.

--- End quote ---
And never will ;)


--- Quote from: computerlen on August 02, 2020, 08:42:12 pm ---I am really not looking for help because I have been experimenting for the last few months and tweaking the circuit. I guess what I really am hoping for is to help someone who has searched just about everywhere for the wiring diagram and I will send it to him or her but I want that person to at least write directly to me so that I might find out what he or she thinks of the results when they build it.

--- End quote ---

computerlen:
I just made contact with a tech who I sent the wiring diagram to. That is all I wanted. Someone to communicate with back and forth about the diagram. Someone who is showing genuine interest. No more of these chat rooms for me. Bye.

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