Pre-amp construction...

general questions, comments and ideas about recording, audio, music, etc.
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Sender
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Pre-amp construction...

Post by Sender » Mon Dec 01, 2003 8:32 pm

There was an article in last months TapeOp with the schematics for making a basic JFET preamp. I lost my copy of TapeOp and was wondering if someone could scan the article or knows of any websites that has good schematics for pre-amps?It looks like theres a nice one in the archives but the .gif file is so small I can't read it :lol:

Any suggestions?

puffpastry
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Re: Pre-amp construction...

Post by puffpastry » Mon Dec 01, 2003 11:07 pm

what kind of preamp do you want?
tube or solid state?
discrete or IC based?
simple? complicated?
xformer-coupled or transformerless?
power supply values?

bigtoe
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Re: Pre-amp construction...

Post by bigtoe » Tue Dec 02, 2003 5:12 am

hey-

you might want to check over at pro sound web in harvey gerst's forum...there is a maaaassive mic pre thread going down there with some heavyweights...might link ya to something...

ok to work...
Mike

edanderson
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Re: Pre-amp construction...

Post by edanderson » Tue Dec 02, 2003 5:37 am

check the "tech talk" forum on recording.org. someone scanned the article in a while back. do a search for tapeop jfet and you'll find it.

http://www.recording.org/cgi-local/ubb/ ... =forum;f=6

lots of other stuff too.

ed

villican
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Re: Pre-amp construction...

Post by villican » Tue Dec 02, 2003 8:00 am

puffpastry wrote:what kind of preamp do you want?
tube or solid state?
discrete or IC based?
simple? complicated?
xformer-coupled or transformerless?
power supply values?
how about something simple for the beginners? maybe something that can actually be worth using. are there any projects like this? i want to try to build something, but would like to have a finished product that i will actually use.

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Derrick
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Re: Pre-amp construction...

Post by Derrick » Tue Dec 02, 2003 8:29 am

I was just going to post something lioke this... only for a tube preamp. Where should I look for info on tube preamps to build. Any forums for preamp builders??
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Derrick

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tret-lo
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Re: Pre-amp construction...

Post by tret-lo » Tue Dec 02, 2003 10:05 am


SlabOLab
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Re: Pre-amp construction...

Post by SlabOLab » Tue Dec 02, 2003 11:57 am


puffpastry
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Re: Pre-amp construction...

Post by puffpastry » Tue Dec 02, 2003 7:18 pm

how about something simple for the beginners? maybe something that can actually be worth using. are there any projects like this? i want to try to build something, but would like to have a finished product that i will actually use.
There's a ton of stuff like this out there because it's so simple to design. It's possible for you to put a simple opamp-based pre together that will give you better results than any pro-sumer level stuff you can buy, and probably even compete with the high-dollar stuff, too.

You can try ESP for a simple preamp circuit or two. This place is pretty old-school IMO, meaning they're stuck on older opamps like the TL072 and the NE5532. If you build an opamp based pre, don't use these old, grainy sounding things. Use something like the OPA2604 or the AD816. The AD816 in particular is really fast (and stable), and will give you something that sounds just as good as a discrete circuit.

here's another link with some circuits.

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