Deluxe Rivera mods

[joesatch]

anyone know the specifics or have layouts or schematics of the Rivera mods Paul did to those Deluxe's all the session players were using back in the day?

[SILVERGUN]

Not sure if you saw this but I found it interesting to hear it directly from The Man himself.
My #1 go-to amp is an original '68 Deluxe Reverb and I now understand what all the hype is about. Just a wonderful sounding and feeling amp.
With all the info. that is available here I'm pretty sure we could guess our way through 80% or more of those mods.
Good luck and have fun
Paul Rivera Sr explains the mods on the Fender 68 Deluxe Reissue demo at end (youtube.com)

[joesatch]

it's a good watch i saw that. any details on what needs to be changed on the deluxe?

[SILVERGUN]

I'll bring sluckey's TDR schematic in for reference which helps in ignoring the normal channel.
Two things Mr. Rivera mentioned in that video stand out as places I would start. Reducing bass and adding a Master Vol.
When I built my version of a TDR I incorporated the Master from sluckey's schematic (and loved it) - R7 1ooK
The more you can crank R10 the more alive the amp becomes, so the Master helps to make that manageable.
To reduce bass I would simply lower the value of the cathode bypass cap on V1-B. Personally, I would use a cap decade box to dial in the actual value rather than just pick one value and settle on it. 5uf is probably not a bad guess. C6 would be another point of experimentation...(the use of humbuckers vs. single coil pickups would come into play)

Additionally, I would have to imagine that his 6-position rotary switch involved 6 different values for the mid cap in the tone stack. The lower you make that value, the more low mids will be brought in. But, maybe his solution was just 6 different slope resistor values? 

I also imagine that some of his boost was added through manipulation of the fixed value 6.8K - tone stack to ground (R9)
If you use a pot in place of the that resistor (sluckey refers to this as a RAW control) it allows control over gain as it slowly lift the lossy tone stack out of the circuit

Sorry for the guesses but they are gathered from hands on experience. I really don't think I am off the mark by much. If you search hard enough I would have to believe that some of this info is out there somewhere on the internet already.
Do you have one to mod or are you planning on building?

[mresistor]

heres pics and info on the stage 2 DR
https://www.sweetwater.com/store/detail/Rivera68Dlx--rivera-68-deluxe-with-stage-2-modifications/reviews