Deluxe Reverb single channel (complete Build)

Discussion in 'Shock Brother's DIY Amps' started by stinga11, Jan 30, 2020.

  1. stinga11

    stinga11 TDPRI Member

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    Greetings to all, After a long time I was able to complete my project. I built a single channel Deluxe Reverb in a Princeton cabinet. The Tone Stack would be a larger AB763 and the mid pot is welded as a potentiometer and not as a variable resistor. A capacitor was added at the output of the reverb circuit as in the silverface. Before building my Deluxe Reverb, I built that of a friend and it turned out that I had little headroom. I consulted Rob Robinette and he recommended that I add a 330K resistor before the phase inverter. Also, I used a 100Ω resistor in the negative feedback tail. The speaker is the Jensen C12N.

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    Last edited: Jan 30, 2020
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  2. schmee

    schmee Doctor of Teleocity Silver Supporter

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    Very cool! So... it's pretty different without the tremelo. What feeds the 220k resistor through the .001 uf cap that goes to the PI tube pin 2? Is the Wire just not shown? Those two resistors tagged onto that 220k resistor ... I'm lost!
    I did this but with no reverb or tremelo once, it worked but not sure it worked properly...
     
    Last edited: Jan 30, 2020
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  3. dreamingtele

    dreamingtele Friend of Leo's

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    Man, this would be a dream amp of mine. Nothing of I dont need, and all of what I want!
     
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  4. stinga11

    stinga11 TDPRI Member

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    It is a mixing resitor. Actually it is not necessary but I used it to maintain the tone and gain of the original circuit.
     
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  5. graybeard65

    graybeard65 Tele-Meister

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    The demo is fantastic - that sounds like a wonderful and useful circuit! What did you decide to do for a speaker?
     
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  6. stinga11

    stinga11 TDPRI Member

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    Thanks!!! The speaker is the Jensen C12N.
     
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  7. thunderbyrd

    thunderbyrd Poster Extraordinaire Silver Supporter

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    sounds gorgeous.
     
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  8. dreamingtele

    dreamingtele Friend of Leo's

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    I cannot get over this, ive been looking for something like this! Man, if only i have the money, id commission a build like this from you!

    is the output still at 22w? This would be perfect for the gigs that I do!
     
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  9. Vibrolux59

    Vibrolux59 Tele-Meister

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    Brilliant I want one.
     
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  10. stinga11

    stinga11 TDPRI Member

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    Thank you!!! Yes, the amplifier is 22 watts but it could easily be made of 35 watts.
     
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  11. dreamingtele

    dreamingtele Friend of Leo's

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    Now we're talking! I want that in 35watts! what changes would it need to get it to that?

    I have no ability to make this on my own, but I want a commission a tech here in Australia to quote me on how much this would cost.. I really want this amp!! :)
     
  12. stinga11

    stinga11 TDPRI Member

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    I can make you a schematic and a layout and tell you which transformers you should buy. Then get someone in Australia to build it for you.
     
  13. dreamingtele

    dreamingtele Friend of Leo's

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    Thank you for the help, Id appreciate that very much.. I dont have money now, but I can somehow repay you when Im in better times.. I can pm you my email address..
     
  14. ZMurph

    ZMurph TDPRI Member

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    Would a 40/20/20/20 500V can cap work on this instead of the 47 and 3 20 electrolytics?
     
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  15. Rockinvet

    Rockinvet Tele-Holic

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    Very innovative amp. Would love to have one too. Looks like the general consensus. Awesome!
     
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  16. Greggorios

    Greggorios Friend of Leo's Silver Supporter

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    Another thumbs up on the build. Congrats. Very nice.

    I got interested in that amp idea when I bought a little 5W Blackface Champ from David Gries (Gries amplification). He makes a small PR sized single channel Blackface Deluxe too. Just noticed there's a used one for sale on Reverb. No affiliation other than being a satisfied customer. Just FYI:

    https://reverb.com/item/29195236-gr...n=6481783183&utm_medium=cpc&utm_source=google
     
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  17. jman72

    jman72 Tele-Afflicted

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    That is awesome! Very nice job.
     
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  18. Diverted

    Diverted Tele-Meister

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    This is great. Tell me about the 330k resistor pre-PI? Did you find it helped to increase headroom?
     
  19. stinga11

    stinga11 TDPRI Member

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    First of all I thought about using a can cap but I didn't do it and ordered a costomized board on the hoffman page. I just started assembling the amplifier and regretted not using the can cap. For the next time I will not hesitate to use a capcan because it is easier and I can use the 10-inch board that sells tubesandmore.com that is cheaper for me.
     
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  20. stinga11

    stinga11 TDPRI Member

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    It definitely helps because it's sending a lot of gain to ground. When I compare it with the one I made for my friend, the difference is noticeable, my amplifier stays much clean.
     
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