Deluxe-umble Reverb idea

[tubenit]

I was thinking about how much I like the clean tone of the Tweed BluezMeister, but that it would be cool to have reverb and vibrato like on a Deluxe reverb.  So this is what I came up with.  Haven't built it, but I'd love to.

CHECK for errors!!  Any discrepency, go with the schematic which should be correct.

IF you don't want to use a phase invertor plate 10k trim pot, then I'd suggest using a 120k & 110k resistor for the plates.

With respect, Tubenit

* Edit    added Dumbly DR which does not have an active FX. However, be sure to check for discrepencies between schematic and layout.  IF there is a difference, go with the schematic drawing.

[tubenit]

At the risk of being dumb, which Deluxe reverb circuit did you decide to follow

Technically, none of them. I am simply adding a reverb circuit and a vibrato circuit like Deluxe Reverb AB763 has. And even the reverb & vibrato are not the same.  I also used a tube rectifier unlike a D-style amp but similar to a DR.  And it uses a fixed bias 6V6 power amp like a DR.

With respect, Tubenit

[Tom_Hull]

hi

just learning ,,


6v6

does pin 8 ground need a resistor and cap
like 25uf 25v ,,,, 250 ohm ,10 watts

tom

[tubenit]

6v6

does pin 8 ground need a resistor and cap
like 25uf 25v ,,,, 250 ohm ,10 watts

This amp is fixed biased instead of cathode biased. So no, it doesn't need a cathode resistor and cap. You could build a cathode version if you wanted but the vibrato circuit would need to be modified.

With respect, Tubenit

[Tom_Hull]

thanks for the answer..

now back to  more reading and studying .... ..

and getting ready for this amp later next month ....and i bought some 12AT7 s this morning

tom

[tubenit]

Check v2 for validity.  I noticed this valve had two triodes in parallel.  Care to discuss this approach?   

The approach is the standard that Fender uses on all their Fender reverb circuits .

Check out a schematic  Princeton Reverb, Deluxe Reverb, Super Reverb, Twin Reverb ................ etc.......

With respect, Tubenit

[Tom_Hull]

hi

well i have been looking and wondering about V4.

should ...........

16 ,,,,,,,,,,1M to ground line .
15 ,,,,,,,,,,,wire to bottom 16
               1M  


pin 3  V1        4.7 M resistor to ground

heres a pic

thanks

tom

[tubenit]

I don't understand what all your questions are?

Go with the schematic if there is an error between schematic and layout.

There should be a 4.7M resistor to ground from the .002 to mid-boost switch on the layout.

Remember, this is a DRAFT idea. As far as I know, no one has built this.

With respect, Tubenit

[tubenit]

This is closer to a Deluxe Reverb then Dumblish.   I like cathode biased amps because I can simply substiture a 6V6, 6L6, or 5881 with NO changes.

The idea was to dumblize the DR tone stack.  On my Tweed BluezMeister on clean using the midboost and PAB,  it is almost the same overdrive/gain as with the OD channel engaged.  Not as much but headed there.

So this idea would allow a DR with reverb and vibrato, cathode biased and a D-style tone stack.  Note some other values and coupling caps are changed to make this more D-style friendly tonally.

CHECK for errors!  IF there is a discrepancy, go with the schematic.  This is a DRAFT idea, I have not built it.  IF you build it, you might consider using a 300R/10w resistor and a 100uf cap for the power tubes.