Tricky tremolo question

[isaac_teller]

Hello everyone. Is it possible to add a depth\intensity control to a Valco 1224 without adding another triode while also keeping the tremolo on the first gain stage(for example: without using the type of circuit found on the Fender 6G2)?


file:///C:/Users/zafim/Downloads/Valco_National_1224_TremoTone%20(3).pdf

[SEL49]

Look at the Marshall 18 watt amp...

     https://el34world.com/charts/Schematics/files/Marshall/Marshall_18watt_schem.pdf

[isaac_teller]

Thanks. Good idea but still adds a triode.

[kagliostro]

May be that instead of a triode you can add a MOSFET as CS (Common-Source Amplifier - or Simply Gain Stage) and follow the proposed schematic

Other thing you can try is to use a MOSFET as SF connecting it after the oscillator you have on the Valco

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EDIT:

May be you can borrow from the GA40 Les Paul

Franco

[SEL49]

Thanks. Good idea but still adds a triode.

Not so. V3A is the preamp and V3B is the oscillator. Exactly what you asked for.

[Merlin]

If only someone would write a book about this sort of thing, with this exact answer on page 162, fig. 8.11 

[isaac_teller]

SEL49 you are right. I stand corrected.

[HotBluePlates]

If only someone would write a book about this sort of thing, with this exact answer on page 162, fig. 8.11