Viitalahde
Well-known member
This is a meta-thread, made to allow you to keep track of the posts concerning this single issue - I will continue re-editing this first post.
- All should be contained in this first post - which is re-edited regularily.
- Everyone is welcome to reply with comments and pointers to things they consider relevant. This will be copy/pasted into the first post, if the meta-keeper finds it relevant. (I deeply dislike censorship, but here it seems necessary for the sake of overview)
- On a regular basis, replies will be copied to the first message and deleted, then bumped to the top.
-----
FORUM LINKS
Project specific discussions:
http://www.groupdiy.com/index.php?topic=4107
>> NYD-EQ discussion
http://www.groupdiy.com/index.php?topic=228
>> DIY Pultec EQP-1A Layout and Pics - Cayocosta's nice looking point-to-point Pultec with excellent wiring information and pics of the finished unit.
http://www.groupdiy.com/index.php?topic=362
>> Bluebird's absolutely massive version of NewYorkDave's passive EQ. With pics and schematics. Respect!
http://www.groupdiy.com/index.php?topic=4107&highlight=eq
>>The NYD EQ - lots of good discussion about this project I'm working on when I get the time for that..
http://www.groupdiy.com/index.php?topic=826&highlight=pultec
>> Discussions on the frequency response of the Gyraf Unit:
http://www.groupdiy.com/index.php?topic=7474
>>How to turn a Pultec into oscillator - a nice and simple trick to turn your existing unit to a test oscillator!
http://www.groupdiy.com/index.php?topic=751&highlight=pultec
>> Parts List and Photos of ChuckD's finished unit:
http://www.groupdiy.com/index.php?topic=779&highlight=pultec
>> Mattiahs' hum problem:
http://www.groupdiy.com/index.php?topic=2238
>> A topic about the White passive EQ -with schematics and discussion of making it both boost and cut
http://www.groupdiy.com/index.php?topic=11342
>> Buttachunk & MR.T pity normal Pultecs and want a low frequency boost only version
http://www.groupdiy.com/index.php?topic=5429
>> gyraf pultec build in the 110v (us) and transformer heat - mains transformer discussion of the Gyraf Pultec
http://www.groupdiy.com/index.php?topic=16390
>> A question on a solid state Pultec with a 2520 op amp
http://www.groupdiy.com/index.php?topic=6501
>> Solid state amp for Pultec EQ?
http://www.groupdiy.com/index.php?topic=2534
>> Mid cut filter for basic Pultec circuit?
http://www.groupdiy.com/index.php?topic=16745
>> General discussion about the Gyraf Pultec and all..
Coils & capacitors:
http://www.diygallery.de/DIYsites/inductor.html
>> Steffen's take on DIY inductors .. Very cool!
http://www.groupdiy.com/index.php?topic=77048
>> Matthias's nice inductor test - the audio files are gone but the discussion is still worth reading
http://www.groupdiy.com/index.php?topic=744&highlight=pultec
>> Discussions about Caps for a Passive EQ:
http://www.groupdiy.com/index.php?topic=411&start=0&postdays=0&postorder=asc&highlight=
>> A topic about passive EQ maths
http://www.groupdiy.com/index.php?topic=2753&highlight=pultec+inductor
>> Choosing Pultec Inductor and Cap Values - CJ explaining this thing well! Not only for Pultecs but all passive EQ's.
http://www.groupdiy.com/index.php?topic=6810
>>Chokes any good for Pultec EQ? - a list of inductors & specs of them.
http://www.groupdiy.com/index.php?topic=6195&highlight=fastron
>>Gyraf Pultec inductors - NewYorkDave trying to desperately convince people going for the Fastron inductors! Believe him will you?? :razz:
http://www.groupdiy.com/index.php?topic=14093
>> Alk509's hand wound inductors.
http://www.groupdiy.com/index.php?topic=20714
>> A peek inside the Cinemag inductor..
GENERAL INFO, TIPS & SCHEMATICS
http://www.gyraf.dk/gy_pd/pultec/pultec.htm
>> Jakob's page of the DIY Pultec.. Started it all!
http://www.recproaudio.com/diy_pro_audio/pultec_eqp1a.htm
>> Cayocosta's nice page for a DIY Pultec. Good work!
http://i74.photobucket.com/albums/i276/velvettone/EQP-1A3Schematic.jpg
>> EQP-1A3 schematic - the one with the 2520 amp.
http://home.t-online.de/home/micro.wave/inductor.html
>> Steffen's introduction to DIY inductors..
http://www.diygallery.de/DIYsites/stpultec.html
>> Steffens transformerless Pultec with BA283 output stage
http://recording.org/users/kev/Inductors.htm
>> Kev's page for inductors at RO..
http://home.online.no/~jaeioluf/sound/eqpassiv.htm
>> Basic passive EQ theory.. Good!
http://www.danalexanderaudio.com/Outboard.html
>> Lang PEQ-2 schematics and datasheets for different Pultecs at Dan Alexander Audio!
http://www.testecvw.com/carl/images/ImpedanceNomograph.pdf
>> Impedance nomograph Check this out for designing passive filters..
http://www.vacuumbrain.com/docs/pultec.html
>> Pics of Pultecs & a layout diagram for EQP-1A
http://www.uaudio.com/webzine/2003/june/index2.html
http://www.uaudio.com/webzine/2004/april/content/content4.html
http://www.uaudio.com/webzine/2004/july/content/content4.html
http://www.uaudio.com/products/software/UAD-1/pultec/demo.html
http://www.uaudio.com/products/software/UAD-1/pultec-pro/demo.html
>> UA explaining Pultecs. Plugins - bah!
FINISHED UNITS
http://www.groupdiy.com/index.php?topic=125527
>> Zee1usa's nice looking GQB-1A twins
http://www.digital-synthologie.de/pultec_discrete/index.html
>> Michael Krusch's version of the BA283 Pultec..
http://img.photobucket.com/albums/v292/chrissugar/CMS-LAB-MEQ1/CMS-LAB-MEQ1-FRONT-1.jpg
http://img.photobucket.com/albums/v292/chrissugar/CMS-LAB-MEQ1/CMS-LAB-MEQ1-BACK-2.jpg
http://img.photobucket.com/albums/v292/chrissugar/CMS-LAB-MEQ1/DSCF2296-P-R.jpg
http://img.photobucket.com/albums/v292/chrissugar/CMS-LAB-MEQ1/CMS-LAB-MEQ1-FRONT-DETAIL-1.jpg
>> Chrissugar's mastering EQ.. :shock:
http://www.groupdiy.com/index.php?topic=4088
>> Jrmintz's hybrid Pultec
http://www.groupdiy.com/index.php?topic=13802
>> Nrgrecording's extremely well cloned outlooks of the EQP-1A with tiny amps..! :twisted:
http://www.groupdiy.com/index.php?topic=9563
>> Radiance's solid state Pultecs
http://www.groupdiy.com/index.php?topic=12992
>> My take on the NYD-EQ
http://www.groupdiy.com/index.php?topic=13114
>> NYD himself built the ghetto edition of his passive EQ
- All should be contained in this first post - which is re-edited regularily.
- Everyone is welcome to reply with comments and pointers to things they consider relevant. This will be copy/pasted into the first post, if the meta-keeper finds it relevant. (I deeply dislike censorship, but here it seems necessary for the sake of overview)
- On a regular basis, replies will be copied to the first message and deleted, then bumped to the top.
-----
FORUM LINKS
Project specific discussions:
http://www.groupdiy.com/index.php?topic=4107
>> NYD-EQ discussion
http://www.groupdiy.com/index.php?topic=228
>> DIY Pultec EQP-1A Layout and Pics - Cayocosta's nice looking point-to-point Pultec with excellent wiring information and pics of the finished unit.
http://www.groupdiy.com/index.php?topic=362
>> Bluebird's absolutely massive version of NewYorkDave's passive EQ. With pics and schematics. Respect!
http://www.groupdiy.com/index.php?topic=4107&highlight=eq
>>The NYD EQ - lots of good discussion about this project I'm working on when I get the time for that..
http://www.groupdiy.com/index.php?topic=826&highlight=pultec
>> Discussions on the frequency response of the Gyraf Unit:
http://www.groupdiy.com/index.php?topic=7474
>>How to turn a Pultec into oscillator - a nice and simple trick to turn your existing unit to a test oscillator!
http://www.groupdiy.com/index.php?topic=751&highlight=pultec
>> Parts List and Photos of ChuckD's finished unit:
http://www.groupdiy.com/index.php?topic=779&highlight=pultec
>> Mattiahs' hum problem:
http://www.groupdiy.com/index.php?topic=2238
>> A topic about the White passive EQ -with schematics and discussion of making it both boost and cut
http://www.groupdiy.com/index.php?topic=11342
>> Buttachunk & MR.T pity normal Pultecs and want a low frequency boost only version
http://www.groupdiy.com/index.php?topic=5429
>> gyraf pultec build in the 110v (us) and transformer heat - mains transformer discussion of the Gyraf Pultec
http://www.groupdiy.com/index.php?topic=16390
>> A question on a solid state Pultec with a 2520 op amp
http://www.groupdiy.com/index.php?topic=6501
>> Solid state amp for Pultec EQ?
http://www.groupdiy.com/index.php?topic=2534
>> Mid cut filter for basic Pultec circuit?
http://www.groupdiy.com/index.php?topic=16745
>> General discussion about the Gyraf Pultec and all..
Coils & capacitors:
http://www.diygallery.de/DIYsites/inductor.html
>> Steffen's take on DIY inductors .. Very cool!
http://www.groupdiy.com/index.php?topic=77048
>> Matthias's nice inductor test - the audio files are gone but the discussion is still worth reading
http://www.groupdiy.com/index.php?topic=744&highlight=pultec
>> Discussions about Caps for a Passive EQ:
http://www.groupdiy.com/index.php?topic=411&start=0&postdays=0&postorder=asc&highlight=
>> A topic about passive EQ maths
http://www.groupdiy.com/index.php?topic=2753&highlight=pultec+inductor
>> Choosing Pultec Inductor and Cap Values - CJ explaining this thing well! Not only for Pultecs but all passive EQ's.
http://www.groupdiy.com/index.php?topic=6810
>>Chokes any good for Pultec EQ? - a list of inductors & specs of them.
http://www.groupdiy.com/index.php?topic=6195&highlight=fastron
>>Gyraf Pultec inductors - NewYorkDave trying to desperately convince people going for the Fastron inductors! Believe him will you?? :razz:
http://www.groupdiy.com/index.php?topic=14093
>> Alk509's hand wound inductors.
http://www.groupdiy.com/index.php?topic=20714
>> A peek inside the Cinemag inductor..
GENERAL INFO, TIPS & SCHEMATICS
http://www.gyraf.dk/gy_pd/pultec/pultec.htm
>> Jakob's page of the DIY Pultec.. Started it all!
http://www.recproaudio.com/diy_pro_audio/pultec_eqp1a.htm
>> Cayocosta's nice page for a DIY Pultec. Good work!
http://i74.photobucket.com/albums/i276/velvettone/EQP-1A3Schematic.jpg
>> EQP-1A3 schematic - the one with the 2520 amp.
http://home.t-online.de/home/micro.wave/inductor.html
>> Steffen's introduction to DIY inductors..
http://www.diygallery.de/DIYsites/stpultec.html
>> Steffens transformerless Pultec with BA283 output stage
http://recording.org/users/kev/Inductors.htm
>> Kev's page for inductors at RO..
http://home.online.no/~jaeioluf/sound/eqpassiv.htm
>> Basic passive EQ theory.. Good!
http://www.danalexanderaudio.com/Outboard.html
>> Lang PEQ-2 schematics and datasheets for different Pultecs at Dan Alexander Audio!
http://www.testecvw.com/carl/images/ImpedanceNomograph.pdf
>> Impedance nomograph Check this out for designing passive filters..
http://www.vacuumbrain.com/docs/pultec.html
>> Pics of Pultecs & a layout diagram for EQP-1A
http://www.uaudio.com/webzine/2003/june/index2.html
http://www.uaudio.com/webzine/2004/april/content/content4.html
http://www.uaudio.com/webzine/2004/july/content/content4.html
http://www.uaudio.com/products/software/UAD-1/pultec/demo.html
http://www.uaudio.com/products/software/UAD-1/pultec-pro/demo.html
>> UA explaining Pultecs. Plugins - bah!
FINISHED UNITS
http://www.groupdiy.com/index.php?topic=125527
>> Zee1usa's nice looking GQB-1A twins
http://www.digital-synthologie.de/pultec_discrete/index.html
>> Michael Krusch's version of the BA283 Pultec..
http://img.photobucket.com/albums/v292/chrissugar/CMS-LAB-MEQ1/CMS-LAB-MEQ1-FRONT-1.jpg
http://img.photobucket.com/albums/v292/chrissugar/CMS-LAB-MEQ1/CMS-LAB-MEQ1-BACK-2.jpg
http://img.photobucket.com/albums/v292/chrissugar/CMS-LAB-MEQ1/DSCF2296-P-R.jpg
http://img.photobucket.com/albums/v292/chrissugar/CMS-LAB-MEQ1/CMS-LAB-MEQ1-FRONT-DETAIL-1.jpg
>> Chrissugar's mastering EQ.. :shock:
http://www.groupdiy.com/index.php?topic=4088
>> Jrmintz's hybrid Pultec
http://www.groupdiy.com/index.php?topic=13802
>> Nrgrecording's extremely well cloned outlooks of the EQP-1A with tiny amps..! :twisted:
http://www.groupdiy.com/index.php?topic=9563
>> Radiance's solid state Pultecs
http://www.groupdiy.com/index.php?topic=12992
>> My take on the NYD-EQ
http://www.groupdiy.com/index.php?topic=13114
>> NYD himself built the ghetto edition of his passive EQ