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RJM Audio - Tube passive phono preamplifier
https://phonoclone.com/diy-pho3.html
C3, C8, R8 and the miller effect in V2 may be safely ignored. The MathCAD model shows a linear response ±0.1 dB over the audio band, with the normal roll-off at both extremes caused by other circuit considerations. This was confirmed on the test bench, the measured deviation being within ±0.2 dB 20 Hz - 20 kHz.
RJM Audio - Construction Guide - phonoclone.com
https://phonoclone.com/diy-guide.html
Please consult the VSPS and Phonoclone Help Desk at diyaudio.com for additional help and discussion, together with many photos of completed projects. rjm003.geo at yahoo.com. RJM Audio 2016 Site built with Simple Responsive Template ...
Phonoclone 3 | diyAudio
https://www.diyaudio.com/community/threads/phonoclone-3.133191/
Hello everyone. I guess it's to cold weather that does it, but at long last I've spared a little time to review the Phonoclone design. I've always felt that the weakest link was the voltage regulators, and this is where most of the new stuff is. The …
Phonoclone 3 | Page 33 | diyAudio
https://www.diyaudio.com/community/threads/phonoclone-3.133191/page-33
The IEC cutout. Far from a noob question, this is in fact one of the eternal imponderables of DIY. It is by a long shot my least favorite task of the whole process, and I haven't figured out a really good way... other than to somehow trick someone else into doing it for you. I draw the cutout...
PhonoClone 3 RIAA - Project gallery/WIKI - diyAudio.rs
https://www.diyaudio.rs/topic/500-phonoclone-3-riaa/
Taj RJM audio site vjerojatno tada nije ni postojao.Evo jedna dobra implementacija baš sa gore navedenim opampovima. Ima neke logične prednosti u odnosu na tvoj projekt, da sada ne teoretiziram, pasivna ekvilizacija najčešće bolje zvuči, a kombinacija pasivne i aktivne daje dobar odnos signal-šum, a zadržava dobar zvuk pasivne.
RJM Phonoclone - Phono Stages & Step Ups - Lenco Heaven ...
https://lencoheaven.net/forum/index.php?topic=23542.0
I built a Phonoclone. For the setup, the Excel spreadsheet can help you to choose the resistors.Default values are for the DL103. The formulas are made to give you around 60dB gain, if you need a little more, you have to change the …
Another older project: the PhonoClone | Crazy Audio
http://www.crazy-audio.com/2013/06/another-older-project-the-phonoclone/
This is a clone of the circuit used in the 47 Labs phono stage. The circuit was published by RJM audio. It is simple and cheap and works well with many low-output MC systems. However the system itself (inductance and resistance) has a big impact on the sound. Therefore it might not work well with some MC systems.
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