Go Back   Home > Forums > Amplifiers > Tubes / Valves

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 11th November 2008, 10:45 PM   #1
diyAudio Member
Kofi Annan's Avatar
Join Date: Jan 2004
Location: US
Default Kofi Annan in: "I'd Like Me a Mic Pre!"


I have been asked by a friend of a friend to see about cobbling together a microphone preamplifier. I've done some searching in the forums and found a few designs like this one and that one, but I'd like some tips on what to look for in a design and some design recommendations as well.

Any thoughts?

  Reply With Quote
Old 12th November 2008, 01:41 AM   #2
Gluca is offline Gluca  Italy
diyAudio Member
Gluca's Avatar
Join Date: Nov 2004
Location: Back to Italy
You going to sing, mr Annan? And would Gyraf G9 be a good suggestion? ... follow the DIY-PROJECTS link ...

  Reply With Quote
Old 12th November 2008, 02:10 AM   #3
diyAudio Member
Kofi Annan's Avatar
Join Date: Jan 2004
Location: US
This looks incredible... but most likely out of price range. I'm really only looking for a one-channel deal here and something less complicated.

Thanks for the input, though. Keep 'em coming!

  Reply With Quote
Old 12th November 2008, 06:13 PM   #4
m6tt is offline m6tt  United States
diyAudio Member
Join Date: Aug 2007
I've heard it said a few times that mic preamps are very dependent on the input and output transformers (naturally the mic pre is balanced, I'm assuming XLR input & output). I've heard good things about the octal plug-in transformers by altec that can be found online in various places, although I'm sure that Lundahl and other high-end magnetics suppliers have some excellent offerings. One Electron has a bunch of schematics on their website: http://www.one-electron.com/FC_ProAudio.html
  Reply With Quote
Old 12th November 2008, 07:38 PM   #5
adason is offline adason  United States
diyAudio Member
adason's Avatar
Join Date: Nov 2004
Location: Maryland
  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Kofi Annan in: "Kofi's Living Room" Kofi Annan Full Range 5 25th May 2008 05:19 PM
Kofi Annan in: "Kofi Makes a 300b DRD... and You Get to Help!" Kofi Annan Tubes / Valves 135 15th October 2007 06:15 AM
Kofi Annan in: "300beee!" or "Kofi Gets a Toy" Kofi Annan Tubes / Valves 125 25th August 2006 03:39 AM

New To Site? Need Help?

All times are GMT. The time now is 01:08 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2