Alembic f2b with Pete Cornish mods?

[LeftyStrat]

I want to build a two channel Alembic f2b with the Pete Cornish mods. As I understand it he adds a tube with each side being a cathode follower to drive long cables, and apparently reduced the size of a cap to cut back on the bass.

Just looking for a schematic and specs on the power supply transformer. A layout would also be nice.

Has anyone built one? I saw a project online that only build one side, but I need both sides for a stereo rig.

[Bobwith2Bs]

I haven't built one of these but have looked into it.

My understanding was that the cathode follower was needed at the end of the chain to give a better impedance match / ample current for whatever the output would be driven into since the stock circuit wouldn't have that.

Are you looking for a stereo project that is all laid out more than the ones that exist online for mono? Can you just put two of the mono ones in a box and call it stereo?

[LeftyStrat]

The single channel on online I found didn't have a schematic. If I can get that I can work it out from there.

[Bobwith2Bs]

Have you seen this project page that someone put together for their clone?

https://github.com/mdouchement/Alembic-F2b

[LeftyStrat]

Whoah thanks! That's what I was looking for.

[Bobwith2Bs]

Yeah no problem! Keep us posted on the build. I have been wanting to throw one of these together for years now!

[martin manning]

Scheme on RG Keen's site: http://www.geofex.com/FX_images/alembpre.gif

[martin manning]

Another with back-to-back transformers for the high voltage

[LeftyStrat]

I don't remember where I grabbed this, but it describes the mods.