mudbunny muff multiple opcion

8/19/2019 Mudbunny MUFF Multiple Opcion

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http://www.madbeanpedals.com presents

m m u u d d b b u u n n n n yy FX T YPE : DISTORTION

Open-Ended Big Muff™PCB artwork m 2011 madbeanpedals

Release date: 01.05.11

The Mudbunny is an open-ended project in which you can create numerous versions of the hugelypopular Electro-Harmonix® Big Muff ™. The Big Muff ™ is a staple of modern rock and has been usedand popularized by innumerable players in the last three decades. A components list has beenincluded below covering some of the many variations of this effect. A blank components list has alsobeen included for you to fill in your own values, should you want to create a unique variation of yourown.

The Mudbunny also includes the Jack Orman “Presence Control” (labeled MID). This mod allowsyou to alter the range of the TONE control to create frequency sweeps not offered in the traditional

Big Muff™. By using the MID control on the Mudbunny, you can create flattened or boostedfrequency curves with the turn of a pot! This mod can be added to any existing Big Muff™ variation.

The controls are as follows

SUS: The overall gain of the effect. TONE: A combination of high and low pass filters with the turn of a pot. MID: The Jack Orman “Presence Control”. A typical value for this pot is 25kB, although higher andlower values will work, too. VOL: The overall output.

SmallBear Parts Guide – www.smallbearelec.com

· Panasonic ECQ-B / V film caps or Topmay box caps

· Carbon film Resistors 1/4W and/or metal film resistors 1/4W

· 16v electrolytic radial caps

· Ceramic / Silver Mica caps (for pF values)

· 16mm Alpha Pots

http://www.muzique.com/lab/tone3.htmhttp://www.muzique.com/lab/tone3.htmhttp://www.madbeanpedals.com/


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Notes

· If you wish to exclude the Presence Control, simply leave the pot off and jumper pads3&1 on the board where the MID control is located. This will connect R18 directly toground.

· There are many transistors you can use in the Mudbunny. Alternatives to the 2n5088

include BC549C, BC550, BC182L, 2n5089, and MPSA18, as well as many more. Usingdifferent transistors will create unique variations in tone. Be careful to use the correctpin-outs, however. Some transistors, such as the BC549C will need to be rotated 180°from the silk screen drawing on the PCB due to its reversed pin-out. Always check theappropriate datasheet for your transistor BEFORE soldering.

· You can also create unique tones by using different diodes in place of the 1n914 (or theequivalent 1n4148). Different diodes such as germanium, LED, and mosfets (wired asdiodes) offer the opportunity to customize the Mudbunny to your personal taste. Typical

alternatives include 1n34a, 1n270, BAT41, red or green diffused 3mm or 5mm LEDs,and 2n7000 mosfets.

· Using germanium diodes in the D3/D4 position will sometimes create a very light octaveeffect. If you use them for both D1/D2 and D3/D4 you may get a slight “bloom” in thenote decay (a VERY COOL effect). If using a mosfet for clipping, simply solder the gateand drain pins together on each mosfet and use the two leads (source and gate/drain)as the diode in a back to back configuration on the D1/D2 and/or D3/D4 positions.

· You can socket the clipping diodes (D1 – D4) to allow you to switch out different typesat any time. Alternatively, you could use either an SPDT or DPDT wired in either spot toallow you to switch between different diode types on-the-fly.

· One useful way to develop your own variation (instead of breadboarding) is to use aPCB as a development board. By socketing most of the pads on the PCB you can easilyswap out different values and component types to gauge changes in tone. You couldalso use pin headers for the pots to easily switch out different values for them.Experimentation is the key here, and this is an easy way to use the Mudbunny as a

learning tool.


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fabbed Version

NOTE

There is a small manufacturing area on the silk screen ofthe Mudbunny PCBs. C10 and R24 were overwritten withvalues on top of the component name layer. Please referto the image above where these two areas are notated.


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R1 1M C1 100n D1 - D4 1n914

R2 3K3 C2 omit D5 1N4001

R3 82K C3 100n

R4 390K C4 100n Q1 2n5088

R5 820R C5 560p

R6 22K C6 50n SUS 100kBR7 1K C7 100n TONE 100kB

R8 8K2 C8 560p VOL 100kA

R9 omit C9 50n MID jumper

R10 390K C10 4n

R11 150R C11 10n

R12 12K C12 100n

R13 8K2 C13 100n

R14 82K C14 100uF

R15 390K C15 100n

R16 820R

R17 22K

R18 39K

R19 39K

R20 390K

R21 100K

R22 12K

R23 2K7

R24 100R

TriangleResistors Caps Diodes

Pots

Transistors

R1 1M C1 100n D1 - D4 1n914

R2 39K C2 470p D5 1N4001R3 100K C3 100n

R4 470K C4 100n Q1 2n5088

R5 100R C5 470p

R6 15K C6 100n SUS 100kB

R7 1K C7 100n TONE 100kB

R8 8K2 C8 470p VOL 100kA

R9 100K C9 100n MID jumper

R10 470K C10 4n

R11 100R C11 10n

R12 10K C12 100n

R13 8K2 C13 100n

R14 100K C14 100uF

R15 470K C15 100n

R16 100R

R17 15K

R18 39K

R19 39K

R20 390K

R21 100K

R22 10K

R23 2K7

R24 100R

Violet Ram's HeadResistors Caps Diodes

Transistors

Pots


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R1 1M C1 100n D1 - D4 1n914

R2 39K C2 470p D5 1N4001

R3 100K C3 100n

R4 470K C4 100n Q1 2n5088

R5 390R C5 470p

R6 12K C6 47n SUS 100kBR7 1K C7 100n TONE 100kB

R8 10K C8 470p VOL 100kA


R10 470K C10 3n9

R11 390R C11 10n

R12 12K C12 100n

R13 10K C13 100n

R14 100K C14 100uF

R15 470K C15 100n

R16 390R

R17 12K

R18 22K

R19 20K

R20 470K

R21 100K

R22 10K

R23 2K

R24 100R

Green RussianResistors Caps Diodes

Transistors

Pots

R1 1M C1 100n D1 - D4 1n914

R2 39K C2 430p D5 1N4001R3 100K C3 100n

R4 470K C4 100n Q1 2n5088

R5 390R C5 430p

R6 12K C6 47n SUS 100kB

R7 1K C7 100n TONE 100kB

R8 10K C8 430p VOL 100kA


R10 470K C10 3n9

R11 390R C11 10n

R12 12K C12 100n

R13 10K C13 100n

R14 100K C14 100uF

R15 470K C15 100n

R16 390R

R17 12K

R18 22K

R19 20K

R20 470K

R21 100K

R22 10K

R23 2K7

R24 100R

Civil WarResistors Caps Diodes

Transistors

Pots


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R1 1M C1 100n D1 - D4 1n914

R2 33k C2 500pF D5 1N4001

R3 100k C3 100n

R4 470k C4 100n Q1 BC550

R5 100R C5 500pF

R6 18k C6 100n SUS 100kBR7 820R C7 100n TONE 100kB

R8 8k2 C8 500pF VOL 100kA

R9 100k C9 100n MID jumper

R10 470k C10 4n

R11 100R C11 10n

R12 10k C12 100n

R13 8k2 C13 100n

R14 100k C14 100uF

R15 470k C15 100n

R16 100R

R17 18k

R18 33k

R19 33k

R20 390k

R21 100k

R22 10k

R23 2k7

R24 100R

MayoResistors Caps Diodes

Transistors

Pots

R1 1M C1 100n D1 - D4 1n914

R2 33k C2 560pF D5 1N4001R3 82k C3 100n

R4 470k C4 100n Q1 2n5088

R5 jumper C5 560pF

R6 22k C6 50n SUS 100kB

R7 1k C7 100n TONE 100kB

R8 15k C8 560pF VOL 100kA

R9 82k C9 50n MID jumper

R10 470k C10 4n

R11 jumper C11 10n

R12 22k C12 100n

R13 15k C13 100n

R14 82k C14 100uF

R15 470k C15 100n

R16 jumper

R17 22k

R18 39k

R19 39k

R20 470k

R21 100k

R22 22k

R23 390R

R24 100R

Creamy DreamerResistors Caps Diodes

Transistors

Pots


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R1 C1 D1 - D4

R2 C2 D5

R3 C3

R4 C4 Q1

R5 C5

R6 C6 SUSR7 C7 TONE

R8 C8 VOL

R9 C9 MID

R10 C10

R11 C11

R12 C12

R13 C13

R14 C14

R15 C15

R16

R17

R18

R19

R20

R21

R22

R23

R24

Transistors

Pots

Resistors Caps Diodes

R1 C1 D1 - D4

R2 C2 D5R3 C3

R4 C4 Q1

R5 C5

R6 C6 SUS

R7 C7 TONE

R8 C8 VOL

R9 C9 MID

R10 C10

R11 C11

R12 C12

R13 C13

R14 C14

R15 C15

R16

R17

R18

R19

R20

R21

R22

R23

R24

Transistors

Pots

Resistors Caps Diodes


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Wiring guide for fabbed Version


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Single Sided Version – For EtchingThis PCB does not include the Presence Control mod.

08.03.11 – Transistors shown with BC549C pinout.

2.09” W x 1.77” H (including borders)


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3 - knob1590BB Layout

4.64” W x 6.69” H


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4 - knob1590BB Layout

4.64” W x 6.69” H

This product is intended for DIY use only. Commercial use, including the sale of PCBs,kits or pedals utilizing this information, is strictly prohibited.

mudbunny muff multiple opcion

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