![]() We used Allen-Bradley carbon comp resistors and Type J pots, except some of the pots which were PEC hot-molded carbon (same technology and actually look/feel the same as the original A-B). The Sowter OT has the correct bifilar winding on the tertiary winding and we were able to get it encased in a mumetal can. The interstage and output transformer as well as the tapped inductor were made by Sowter. We sourced an old Chicago power transformer very close in spec to the original. The studio had a few original-correct old Triad HS-56 input transformers laying around, so we grabbed one. There are schematics and layouts around the web, and I took inspiration from some of these, copied the original Pultec schematic exactly, and made my own revision of the layout based on my experience with tube circuits. We debated on going with the Drip Electronics PCB, but in the end we decided it would be more fun and economical to build it point-to-point on turret boards. ![]() The build turned out great- here's the story if anyone is interested. We wanted to build the best Pultec we could build. RadioDesigners Handbook - Ch.This was a fun project I undertook with my friend/the studio's assistant. RadioDesigners Handbook - Ch.5 - Transformers SSL 4000E Bus compressor time constants, quad fader, autofade SSL 4000E Quad VCA, inserts, Compressor time constants SSL 4000E Input amplifiers - recent version SSL 4000E Input amplifiers - early version, 1979 Sony C800G Schematic - with component values. KH_UE100_equalizer.pdf - Thanks to Zebra50!ĭISA 91N02 Limiter - inspiration source for Manley's Vari-Muĭrawmer 1960 (original version) (Removed by request from the manufacturer)ĭrawmer DS-201 Gate (temporarily removed)ĭrawmer DS-202 Gate (temporarily removed)Ī Japanese article about the Sony C800 Microphone: If you have that problem, instead "right-click" on the link and select "save target as." to save to your harddisk - and view it from there. gif-files dosen't show correctly in some browsers. I hope to be able to extend this little collection with time, so check back for updates. ![]() If you have some schematics that you think belongs among these, please do not hesitate to contact me. Here's some schematics and information that can be hard to find elsewhere. ![]() Classic Schematics Gyraf Audio's Obscure Schematics ![]()
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