MOSFET Phase splitter

[ollie]

Looking at a 10M45S CCS data sheet the other day and thought this really does behave like depletion mosfet. Well, I broke an old 12AX7 tube and use the base to solder in two of these CSSs in for the two triodes. Plugged it into the phase splitter socket on a 5F6A circuit and BINGO. Bottom end is tighter, seems to recover quicker when driven hard. Tone was thinner at same amp settings, but easily fixed with settings. Less gain though. What do you think?

[loudthud]

Interesting. Protection is probably required for the gate pin just like any MOSFET. No data on frequency response. Have you tried changing the bias resistor in the PI?

[ollie]

Im going to start making adjustments tomorrow. Ya know... see what measures differently from stock. They are running cool.

[GibsonLover]

See if you can start a trend - The IRF 820 (and others) are prefectly suitable for mundane audio chores. As a cathode follower it drops right into a cathode, grid, plate connections of a triode stage. LFO for the trem circuit as well. I prefer no-audio path uses for solid state, and comes in real handy when you're one triode short.
Check this out: http://www.geofex.com/Article_Folder...osfetfolly.htm

[tubeswell]

The IRF 820 (and others) are prefectly suitable for mundane audio chores. As a cathode follower it drops right into a cathode, grid, plate connections of a triode stage. LFO for the trem circuit as well. I prefer no-audio path uses for solid state, and comes in real handy when you're one triode short.
Check this out: http://www.geofex.com/Article_Folder...osfetfolly.htm

Handy article - Cheers :-)