Tonestackless Dr. Boogey

[sam_801023]

Tonestackless Dr. Boogey

Excuse me, I have been searching the schematic and layout of the Tonestackless Dr. Boogey for almost 3 weeks.
Still, I can't find anything.

Can anyone give me a helping hand by posting the schematic and layout of it ?

[arma61]

HI

this link is full of links to other Dr. Boogie thread, I think there also the tonestackless one.

http://www.diystompboxes.com/smfforum/index.php?topic=61391.msg481948#msg481948

Ciao
Armando

[frokost]

Put a suitable output capacitor between the source of the last JFET and the volume pot, and voila - no tone stack. Omit all parts between the 10K and the volume pot on any layout, preferably gaussmarkov's.

[slideman82]

Finally! Mine's built that way, with some MPF102... and sounds great!

[sam_801023]

Put a suitable output capacitor between the source of the last JFET and the volume pot, and voila - no tone stack. Omit all parts between the 10K and the volume pot on any layout, preferably gaussmarkov's.

But should I remove the last JFET (Q5) as well ?

and the 10K you mean is the presence control, right ?

[frokost]

No, the presence control is part of the tone stack. I was thinking of the 10k coming of the source. Now that you mention it, you can probably shave of that one and the last JFET as well.

As for what layout to use, I really recommend the Gaussmarkov one. There's a long thread here somewhere about all the improvements over the original design, and how the layout battles the severe oscillation issues that a bad layout of the Boogey can lead to. I know - I originally built the Boogey from my own layout and the thing oscillated so bad even with miller caps and shielded wires everywhere that I had to ditch it (I did gig with it twice though  ). With the Gaussmarkov layout, I can run unshielded parallell wires everywhere with no problems whatsoever. So I recommend you use that one even if you don't plan to include the tone stack.

[sam_801023]

No, the presence control is part of the tone stack. I was thinking of the 10k coming of the source. Now that you mention it, you can probably shave of that one and the last JFET as well.

As for what layout to use, I really recommend the Gaussmarkov one. There's a long thread here somewhere about all the improvements over the original design, and how the layout battles the severe oscillation issues that a bad layout of the Boogey can lead to. I know - I originally built the Boogey from my own layout and the thing oscillated so bad even with miller caps and shielded wires everywhere that I had to ditch it (I did gig with it twice though  ). With the Gaussmarkov layout, I can run unshielded parallell wires everywhere with no problems whatsoever. So I recommend you use that one even if you don't plan to include the tone stack.

Thanks 
But do I need to keep the Q5 and the 10K there ?

it seems the 2 parts can be removed after removing the tonestack, right ?

P.S. Yes, the layout is excellent !

[frokost]

That's what I said  . Q5 is just a buffer, so it doesn't hurt to keep it either. Your choice.

[sam_801023]

That's what I said  . Q5 is just a buffer, so it doesn't hurt to keep it either. Your choice.

Great, thanks for your help
and I decide to abandone Q5 and the 10K

Well, will this affect the tone much ?

P.S. It may reduce some noise if I abandone them, right ?

[frokost]

Since it's a buffer, it probably won't affect tone or noise - it's not amplifying anything. AFAIK (which isn't much) the output impedance will be lower with the buffer than without it, and may therefore sometimes play nicer with the next pedal in line, or at least be more consistent. My guess is that it won't matter much and that you can omit it safely.

[slideman82]

Try a bipolar as buffer, sounds cleaner to me with low drive...

[newfish]

Just built the first two stages of a Dr.Boogie on my breadboard.

No tonestack.  No Gain control (all in!) and a single volume control after the de-coupling cap.

This thing is a monster even after two stages.  Am sorely tempted to build one, as and when I buy some more 100K trimmers (hence only two stages so far).

Am thinking of building this (with tonestack) as a recording pre-amp for late-night high-gain situations.

Any suggestions for tempering the output?

[deadastronaut]

i know this is an old worn to death thread ....but. i'll blow the cob webs off it...

ive been messing with an old deliberately large pcb i did of this ages ago, for test purposes...still the best hi gainer imo!...

does anyone have a soundclip of their tonestackless boogey?....just curious to hear the comparison...

or a schematic to switch between stack  on/off....

cheers . rob.


edit:

nevermind  i just did it with a couple of wires from the last fet..    .sorted...cheers anyway...

[askwho69]

dead links bump!

[deadastronaut]

dead links bump!

what?...what dead links?...

[Brymus]

Here is the Gausmarkov PDF on the Dr Boogie/no tonestack.
I hope he doesnt mind me uploading it here.http://www.aronnelson.com/gallery/main.php/v/Brymus/Dr+Boogie/
Seems no one can find this version anymore.

[askwho69]

Wow thanks so much for this one really helps This one is verified? well gauss is a good layouter anyway

Rob dead links because this thread has link that links to tonestackless that has dead link

A2

[Brymus]

Wow thanks so much for this one really helps This one is verified? well gauss is a good layouter anyway

Rob dead links because this thread has link that links to tonestackless that has dead link

A2

I am pretty sure I have seen a build report on it before in the threads here.
So I would say it's verified but I haven't built it myself.

[deadastronaut]

nice one bryan..this is on my to do list now...ive been messing around with my boogie to switch the stack, no need now..cool.

@askwho.. oh i see!..

[jimmybjj]

I know this is a old thread but I wanted to update for future readers (searchers) I have built the boogie from the PDF and it works well, verified.