Mad Professor - Stone Grey Distortion  [traced]

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Re: Mad Professor - Stone Grey Distortion

Postby Victor Nery » 23 May 2012, 15:38

Greetings,

As I told you, I wasn't sure how to post it. Know I got it. Tomorrow I will post it here as an attachment. I'm at work and the file is at home. Here we are forbidden to access some sites.

Sorry about the inconvenience.

Cheers
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Re: Mad Professor - Stone Grey Distortion

Postby phibes » 24 May 2012, 02:37

It's cool, I used to do the same. The nice thing is you don't have to worry about files going away due to web storage going down. I hate that shit with photobucket.
GuitarlCarl - "TGP = The Gear Polishers"

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Re: Mad Professor - Stone Grey Distortion

Postby Victor Nery » 25 May 2012, 16:46

Greetings,

Sorry about the time it took to post. Here it goes the layout as an attachment. If you have any question about it just let me know and I'll be gald to help you.

Cheers
You do not have the required permissions to view the files attached to this post.
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Re: Mad Professor - Stone Grey Distortion

Postby BJF » 11 Mar 2016, 10:51

Hi,


Recall that when an invereter 40XX series is used as an analog amplifier the open loop gain is low and dependent on powersupply and so at 5V gain is at its highest but open loop bandwidtn is at its lowest at a couple of Hertz; at about 8V open loop bandwith is about 7KHz while now the closed loop gain becomes a complicated computation because the open loop bandwidth is low.

What does this mean in layman terms?
It means that the exact voltage at which the circuit is powered will affect the sound and especially how distortion is formed


At your service
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dv8r601 (22 Jul 2017, 12:28), Fergutor (18 Mar 2016, 17:28), roseblood11 (11 Mar 2016, 12:04), Victor Nery (15 Mar 2016, 10:21)
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Re: Mad Professor - Stone Grey Distortion

Postby gearstack » 06 Aug 2017, 03:54

I dont have 2n3819....I only got j201 and 2n5457. I heard it cant be a straight substitute without altering the leg of the fet. Can someone help me with a simple schem or layout on the clipping part...thanks
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Re: Mad Professor - Stone Grey Distortion

Postby dv8r601 » 08 Aug 2017, 23:34

gearstack wrote:I dont have 2n3819....I only got j201 and 2n5457. I heard it cant be a straight substitute without altering the leg of the fet. Can someone help me with a simple schem or layout on the clipping part...thanks

2n3819
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2n5457
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Take the center leg if looking at front, swap it around so the source is now on the outside, and the gate is in the middle, take a piece of stripped wire jacket and cover the bent lead so it doesn't short out. Easy as that. just make sure the pinouts match the layout that your going to use, otherwise it (potentially)won't sound right.

OR
In a much more complicated fashion:

You could move the link up one spot on each jfet and spin Q2 around so that the same legs are tied together and that the signal effectively goes thru like its supposed to,(Q1-D+S->G INTO Q2 G->D+S), BUT that would involve trace cuts and components to move around, etc.. I'm lazy as hell, so the simplest way works for me with things like this. YMMV

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