Fender 5E3, single channel with reverb/Hammond AO-43

Discussion in 'Amp Tech Center' started by Diverted, Apr 19, 2018.

  1. Diverted

    Diverted Tele-Meister

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    Hi all,

    I'm finishing up a really fun build that taught me a lot. It was hard finding all the info I needed for this amp in one place. Now that I've gone through the build, I wanted to see if there is any interest from the forum on posting the schematic and layout schemes I came up with.

    Anyway, the amp is a single channel Fender Deluxe 5E3 circuit with Princeton AA1164 reverb. Also has a post-PI master volume and a three way feedback/cathode bypass switch per Rob Robinette. For nine-pin tubes it uses two 12AX7s and a 12AT7. Plus output tubes and rectifier.
    This amp uses the transformers from a Hammond AO-43 amplifier organ, which can be had super cheap on eBay. I used a one-off aluminum chassis but you can easily use the Hammond chassis. The whole Hammond amp w/tubes can usually be found for under $100 so it's a good economical way to build a great-sounding amp and not have to scrounge for tons of parts.

    If specs/details/pics etc are of interest, let me know and I'll post a bunch of stuff.

    Ted

    IMG_9055.jpg
     
    tizianod, cap47, robrob and 4 others like this.
  2. flyswatter

    flyswatter Friend of Leo's

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    Did you install the "Trainwreck-style" master vol. from Rob's site (the one without the extra caps) or the proper PPIMV with the 0.1 uF caps added to the 220ks in the phase inverter? Thinking of trying a master in my 5E3 and would be curious how yours worked out.

    Nice build!
     
  3. Diverted

    Diverted Tele-Meister

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    I was thinking of doing a PPIMV but read a few things about bad interactions it might have with the reverb circuit. So I built it with a trainwreck-style. I may try that next and if it doesn't work well, switch back to trainwreck.
     
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  4. ArcticWhite

    ArcticWhite Tele-Meister

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    Yes please post schematics, pics, layouts, and any sort of build diary you can.
    I have a couple of these amps and don't quite know what to do with them. I bought a retired Hammond repair man's stock for 200 bucks, so I have 36 amps right now. And all the tubes. And a dozen speakers..
     
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  5. vintagelove

    vintagelove Tele-Meister

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    Nice work!!!
     
  6. vintagelove

    vintagelove Tele-Meister

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    Rub it in man, rub it right tf in...




    Nice score!
     
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  7. doug

    doug TDPRI Member Silver Supporter

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    This is exactly the amp I want! I would greatly appreciate your posting a layout and, perhaps, more pictures.
     
  8. robrob

    robrob Poster Extraordinaire Ad Free Member

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    That's a very cool amp. Yes, post all the details and some sound clips please.
     
  9. ArcticWhite

    ArcticWhite Tele-Meister

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    Yes please!
     
  10. Diverted

    Diverted Tele-Meister

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    Okie dokie. Just fixed up the last few issues with the amp and it's playing like a champ.
    I moved a few of the tube assignements around as I was building it. When I build the next one (next week) I'm going to move them around so they make more sense and are easier to deal with layout-wise. Once I do that I'll draw up a layout. Sound clips are coming at some point soon!
     
  11. muscmp

    muscmp Tele-Afflicted

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    i have a hammond a043 amp, a042 preamp, reverb pan, connectors and two heppner speakers that i'm trying to figure out what to do with them, so your info should help.
    thanks,
    play music!
     
  12. Duncandog

    Duncandog NEW MEMBER!

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    Did you ever post those schematics? I have one of those amps and would love to build that design!!
     
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  13. Digital Larry

    Digital Larry Tele-Holic

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    Yeah me too, I just posted about my AO-43 and my puzzlement about what to do with it.
     
  14. tizianod

    tizianod Tele-Meister Gold Supporter

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    looks great, can't wait to see more and hear some sound samples. Nice job!
     
  15. ArcticWhite

    ArcticWhite Tele-Meister

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    What a tease...
    Hey, maybe he got Diverted?
     
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