Sunday, 14 January 2018

Friedman Buxom Boost

"The Friedman Buxom Boost may be the most powerful tonal solution you ever put on your pedalboard. Like its namesake amp head, this pedal pushes a pure, clean signal to conjure the absolute most from your tone. Turning the boost control is your ticket to volume increase, pushing the front of your amp for thick harmonic overdrive, or balancing between two guitars with varying output. Whether you're after a tone tailored by its active mid, treble, and bass controls or the pedal's ability to achieve total transparency - thanks to its onboard EQ Bypass switch - it's all in there. We've even added a useful tight control for reigning in your tube amp's bottom end when boosted. As expected, every Buxom Boost pedal is crafted with the attention to detail and fine ear for tone that comes with Dave Friedman's name.
Your tone, just more of it. Just like the Friedman Buxom Betty amp head, the Buxom Boost sings with a completely clean tone that makes every nuance of your performance shine though. Simply flip the pedal's onboard EQ Bypass switch and you have a completely transparent signal, adding muscle to your guitar without ever changing its fundamental character.
Tuned for your rig. Though the Buxom Boost can be tonally invisible, its active 3-band EQ and powerful Tight control enables it to be anything but. With a stomp of a switch, you're able to balance the voice and output of two different guitars or push certain frequencies for a solo tone that cuts. With the Buxom Boost's high-quality components, you'll be astounded at how well it works for fine tuning your acoustic-electric guitar's plugged-in voice."
Schematic from Bugg available here.
There are 2 layouts (circuit runs at +/-9V).
The first one with the original bipolar voltage converter.
The second one without it.
You must then add the original or a regular one (not sure of the noise difference)





19 comments:

  1. Many thanks man, looking forward to this badboy

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  2. That is a complex powersection. Why so complex? Can anyone give some insight?

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  3. Hi Alex,
    I was just reading your description of this pedal and wondered if you could explain the but where you say:

    "There are 2 layouts (circuit runs at +/-9V)"

    I've not come across this before in pedal building so not sure what it means.

    Will layout 2 work without the bipolar voltage converter or is it a case you have to build either layout 1 OR layout 2+3?

    Cheers

    Elbee

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    Replies
    1. Layout 2 requires the bipolar voltage converter to function.

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  4. So, built the layout and im getting a very faint signal. Almost inaudible. Very garbled what ever it is.
    All parts were checked, links checked, rows knifed etc. Only built layout 1.

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    1. The layout should match the schematic (always better to double check before building an unverified pedal).
      Can you upload pictures and voltages in the Forum/Debugging section?

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    2. Aye, i know its unverified man, will give it a go when i can. I know the layout should match the schem but it could be an error my end or the layout. Will try with the debuggin in a bit man

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  5. Has anyone else been able to build this yet? I might give the swcond layout with seperate power section ago... i posted in the debug area but to no help.

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  6. Looks like they made it with 3 TL072. 2x72 in place of one 74 at pedalpcb. Also simplified the over-complicated power section.

    I can't find similar circuits with IC only. It's impossible to find j201, 5457 and similar old transistors and all preamps use those or seem to work better with those like the Sadowsky.

    Please reply if you know an IC only preamp. Will use in a bass guitar.

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    1. I guess I'm gonna be ditching that power section and go with dual batteries as shown here: http://www.instructables.com/id/Dual-Voltage-Supply-9V-batteries/
      :) Any suggestions? May be a diode in between as usual...

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    2. 3 TL072 or 1 TL072 and 1 TL074 is exactly the same.
      Drawing a vero layout is different than drawing a pcb.
      You need to change things to make it as small as you can.
      If you build the layout without power section and add the regular bipolar voltage converter it should be exactly the same.

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  7. J201 is widely available as are the 2N5457. If you do not trust ebay then check (at a cost!) Mouser.

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    1. Thanks. I don't want to deal with neither of them. Too much hassle with customs and int. shipping for a few parts. I also like to be able to walk into a store and find the stuff right there when I need it. :)

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    2. Most have moved on from through hole J201 and use SMD ones, which are cheap, reliable, readily available, and all you need is an adapter board, which is also cheap.

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  8. Top layout verified. Had a dodgy 1054. But all other components as schematic. In the be-od i favoured a 1458 as i think that had a more pleasing decay, here as far as i know the eq didnt work with that, only a tl072. But it works, has an insane amount of level. Im now gonna box up all 3 into one box, the be-od, dirty shirley and now the buxom.

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    Replies
    1. Would be cool to see a vid of the final boxed up 3-in-1 :)

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    2. Which one works better:
      Guitar > Buxom > Dirty Shirley > Amp
      OR
      Guitar > Dirty Shirley > Buxom > Amp

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  9. If im honest, im gonna have the buxom seperatly. Its more a tool pedal than boost. Heres my thinking- id use it if i was at a gig with a half decent amp but wasent sounding the way i wanted. The buxom could accomodate by changing the character, adding more gain and changing the Eq dramatically.
    I will be boxing the dirty shirley and be-od into a box with a small boost in front for a push but its effing overkill otherwise. I have tested the buxom infront of the dirty shirley and its just not needed that level of tweaking y’know?
    But as an amp changing boost its incredible.

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