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Tube swap on a fender blues deluxe reissue 40w?

Discussion in 'Amp Central Station' started by Billy3, Jan 5, 2021.

  1. strat a various

    strat a various Friend of Leo's

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    Fair enough.
     
  2. zombiwoof

    zombiwoof Tele-Afflicted

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    I am skeptical that Fender put a 12AT7 in the V1 position, that's a driver tube and any tube amp tech I've ever heard talk about this would say it's not a good tube to use in a gain position. In the vid in the link, George just says they changed "the tube" but doesn't say which one. I also think it would be the phase inverter tube that they changed, not V1, if they are using an AT7, if it were V1 a 12AY7 or 5751 would make more sense.
    Do you have a link to a video that says that V1 has a 12AT7?.
    Al
     
  3. strat a various

    strat a various Friend of Leo's

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    That's what I think. All the blurbs say "tube" and "preamp tube", but I'm not seeing "V1" anywhere.
    I can't imagine the upside to designing an amp for 12AT7 V1 and 12AX7 Phase Inverter. That is so backwards, I can't even ...
     
  4. Ronzo

    Ronzo Tele-Afflicted

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    This is an excellent suggestion. An even better suggestion would be to have your son buy two jacks, a pot, a knob, and a small project box and make it himself.

    It works. It allows the preamp to provide better tone and keeps the volume under control. It’s an easy project for a smart young man with basic soldering skills. Lots of instructions on building this on the web. I’ve built four of them for cheap.
     
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  5. Ronzo

    Ronzo Tele-Afflicted

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    Or make one for less than 10 bucks. Most of that is for the project box. I’ll bet you have an appropriate pot, knob, and two jacks in your parts box.

    $40 for that? “They seen you comin’, man.”
     
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  6. 76standard

    76standard TDPRI Member

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    https://www.kcanostubes.com/content/preamp-tube-gain-and-compatibility-guide

    Billy 3, use the link above to get a better understanding of preamp tube gain. Generally speaking, a reduction in gain = a reduction in volume and cleans up your tone with added clean headroom. From that standpoint invest in a good 12AY7 tube. Try to buy one that gets good user reviews. Harp players like that tube a lot. Spend a little time doing some research on the internet. Quest on!
     
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