James - Orange Tonestack?

Discussion in 'Shock Brother's DIY Amps' started by JohnnyCrash, Jan 14, 2020.

  1. JohnnyCrash

    JohnnyCrash Doctor of Teleocity Gold Supporter

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    Anyone built an amp with this preamp/tonestack?

    It’s also sometimes called the “passive baxandall.”

    Any thoughts on its sound? Amount of gain? Etc.?
     
  2. shortcircuit

    shortcircuit Tele-Meister

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    I've been playing around with the James tonestack for a while. It in my last 5 builds/rebuilds. As you can surmise, I really like it. It's a really lossy tonestack, about -20dB, but I drive it with a cathode follower/mosfet source follower to preserve the highs. With the treble and bass at midpoint, there is a flat response. Crank both up for a familiar mid scoop. Turn them down for a mid hump, but you gotta turn up the gain to make up for the attenuation. I really like the Ampeg values on @robrob's site: https://robrobinette.com/Generic_Tube_Amp_Mods.htm#Baxandall_or_James_Tone_Stack
     
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  3. FenderLover

    FenderLover Poster Extraordinaire

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    I gotta agree with Shortcircuit, it's really lossy, but the best one to go from mid scoop to flat to mid peak. It's all about gain after that - when you're flat it's -15dB to -20dB loss. Mid peak means the mids are -20dB and everything else is lower. Just have enough gain to make up and you're good.
     
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