EHX - Sovtek Big Muff Pi  [schematic]

All about modern commercial stompbox circuits from Electro Harmonix over MXR, Boss and Ibanez into the nineties.
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wompwompwomp
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Post by wompwompwomp »

hey

so I am very new to this business, I have built some kits, but still am not great at reading schematics, particularly when things are wired with awkward ribbons, and I am also not familiar with the resistor color scheme used in this pedal.

I am trying to do some of the modifications posted here: http://rkerkhof.ruhosting.nl/Taas/Mods/Big%20Muff.htm

particularly the tone control modifications and adding the extra knob that Jack Orman suggests.

Could anyone be so kind as to look at this picture and circle the parts that correspond with the tone control circuit?
<img src="http://i6.tinypic.com/142gff7.jpg">

thanks,
andy

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Bernardduur
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Post by Bernardduur »

wompwompwomp wrote:hey

so I am very new to this business, I have built some kits, but still am not great at reading schematics, particularly when things are wired with awkward ribbons, and I am also not familiar with the resistor color scheme used in this pedal.

I am trying to do some of the modifications posted here: http://rkerkhof.ruhosting.nl/Taas/Mods/Big%20Muff.htm

particularly the tone control modifications and adding the extra knob that Jack Orman suggests.

Could anyone be so kind as to look at this picture and circle the parts that correspond with the tone control circuit?
<img src="http://i6.tinypic.com/142gff7.jpg">

thanks,
andy

:D

My page
'No more....... loud music.......'
Follow my love for pedals and amps on https://bernardduur.blogspot.com and https://www.instagram.com/bernardduur1

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wompwompwomp
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Post by wompwompwomp »

Bernardduur wrote:
wompwompwomp wrote:hey

so I am very new to this business, I have built some kits, but still am not great at reading schematics, particularly when things are wired with awkward ribbons, and I am also not familiar with the resistor color scheme used in this pedal.

I am trying to do some of the modifications posted here: http://rkerkhof.ruhosting.nl/Taas/Mods/Big%20Muff.htm

particularly the tone control modifications and adding the extra knob that Jack Orman suggests.

Could anyone be so kind as to look at this picture and circle the parts that correspond with the tone control circuit?
<img src="http://i6.tinypic.com/142gff7.jpg">

thanks,
andy

:D

My page
I see the picture with the diodes circled but not one with the capacitors or resistors?

-Andy

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bumblebee
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Post by bumblebee »

You may wana check out my page too:http://sovtek.webs.com/
I havent added any mids control projects yet.

When I add projects I make them with actual photo's of the PCB's so biginers can do them easily.
I also post the schematics so more advanced DIYers can use them if they wish.

The site is brand new and i still have content to add so just keep in bookmarked as more will be added continually.
I so dislike the modern digital world that I need to use semi-digital effects to emulate the analog world of cassette, VHS, and vinyl.

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nbabmf
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Post by nbabmf »

This page maps out all the components:

http://www.premierguitar.com/Magazine/I ... _Mods.aspx
Attachments
EHX Sovtek Big Muff Pi schematics 3
EHX Sovtek Big Muff Pi schematics 3
EHX Sovtek Big Muff Pi schematics 2
EHX Sovtek Big Muff Pi schematics 2
EHX Sovtek Big Muff Pi schematics 1
EHX Sovtek Big Muff Pi schematics 1
PGrussionmuff.pdf
article on big muff pi russian
(611.36 KiB) Downloaded 96 times

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modman
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Post by modman »

Please, support freestompboxes.org on Patreon for just 1 pcb per year! Or donate directly through PayPal

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