Help me build my first preamp!

[limit6]

Hey, all. I've been toying with the idea of building a preamp (The Redd.47 to be specific) for quite some time now. If all goes well, I'd like to build an LA-2A and Pultec as well. I am a complete n00b, though. I've made guitar cables, installed pickups, and built a DIY envelope filter, but a project like this is bold new waters for me. I was wondering if someone could help me hunt down parts, and if anyone lived in the Philadelphia/Southern Jersey area that'd be willing to spend a day(s) with me helping and guiding me through. I'm very brave and won't be asking the same question a million times. I listen. I'd just hate to invest a huge chunk of cash and not have the project go anywhere.

Thanks,
-Andrew

[HeavyHand]

maybe try a kit if you dont feel up to the task of sourcing all the parts. seventh circle audio and hamptone are the first two that come to mind. there's a sticky on the DIY section of the forum on the various mic pre kits. if not... there is also the forum at http://www.prodigy-pro.com/diy/index.php they have a wealth of info
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[CurtZHP]

I'm not familiar with the Redd.47, but here's a source for a Pultec build that might interest you.

http://www.gyraf.dk/gy_pd/pultec/pultec.htm

I recently built their G9 preamp (love it!) and am currently building their G7 tube mic.

As far as parts sources, I've relied on Mouser and Digikey for most parts, and Newark for whatever the other two don't have.
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[single_fin]

you should be able to do the ordering yourself. i built a jlm audio baby animal preamp. it comes as a kit (pcb and all parts) and then next built a gyraf pultec without any trouble.
the parts lists are online at gyraf's site, and valve units have very few parts. plus they are big and easy to solder. the only part i was worried about was wiring up a mains transformer for the first time. but it turned out fine. now my problem is building monitors/speakers that'll do justice to the bass!

[Jeff White]

I'm in Philly and posted this thread last week: http://messageboard.tapeop.com/viewtopic.php?p=557322&highlight=#557322

Different project, sure, but I'm in Philly and the plan is to DIY as much as possible from now on. Maybe we can help each other out some?

Mouser and Digikey, btw, is where I have sourced parts (like burr-brown op-amps for mods) in the past.

Are you good with schematics? I am weak, so that is the big area where I need assistance until I am comfortable enough to not have to use "connect the dots" photo guides for projects.

Jeff
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[Kevin S]

For a redd you have 2 general options.

The orange86 or the Drip version.

I'd go for the orange version because it's cheaper and has phantom power supported in PSU. It's closer to a kit forma as he spells out some of the part numbers etc..

drips stuff is nice but I think he is after profit more than project. His documentation and pcb's are excellent but his overall support really lacks, IE dropping the ball on +48V phantom power. NOt impossible to add but for the $$ it's a shame IMO, and should have been handled already.

Orange 86
http://diy-store.guavatone.com/catalog/index.php?cPath=22
http://www.prodigy-pro.com/diy/index.php?topic=33657.0

Drip
http://dripelectronics.com/documentation/four_seven_instructions.pdf
http://dripelectronics.com/home.html
http://dripelectronics.com/forum/viewtopic.php?f=3&t=37