Resistor in place of Mid Pot

[M Fowler]

Fender 68 Custom Princeton Reverb tone stack

[martin manning]

Very interesting Mark; I was not aware of that hybrid.

[M Fowler]

Much darker, Marshall flavor, quicker breakup less headroom but tremolo seems stronger but still using 1m not 330k or 220k like Paul C mod.

[Smokebreak]

Also, the "'68 Custom Deluxe Reverb" they've put out has the same stack for the custom channel.
From the description : Comes equipped with Celestion Speakers (V Type) for a more modern, punchy sound that breaks up nicely when pushed. Reduced negative feedback lends a more "touch-sensitive" feel, quicker break up and added harmonic richness. The shared tremolo on both channels adds to its versatility. Because of this the '68 channels are wired in phase and can be blended for more tonal options, via A/B/Y box. "Custom" channel features a 50s Tweed "Bassman" tone circuit for more low mids and sooner breakup. The Deluxe Reverb has the bright cap removed on the "Vintage" side to make the amp more pedal-friendly.

I played the amp the other day and thought both channels sounded really good. Better than the BF DR reissues by a bit.

https://www.manualslib.com/manual/10496 ... =12#manual

[M Fowler]

Here is a downloadable 68 Custom Deluxe Reverb schematic