ToneFreak Severe Distortion

Basically, a Marshall Guvnor derivative distortion pedal which is more similar of that from MI Audio's Crunchbox. Clipping is at the feedback loop of the opamp rather than shunting it to ground as seen in the latter.
A few notes:
- the VOLUME pot's Wiper(2) is the effect OUT.
- An SPDT with CENTER OFF toggle switch is used(this is much of a PRESENCE function similar to Crunchbox, only with a fixed 4.7K resistor). "center" pad refers to the CENTER pole of the toggle switch.
- CLIPPING selector switch, use an SPDT with CENTER OFF toggle switch same as mentioned above. Pads located between the 51pF cap and 10K resistor just above the opamp.
- Si refers to Silicon diode(i.e. 1N4148 or similar)
- Ge refers to Germanium diode(i.e. 1N34A, 1N60, etc)
- All SQUARE pads of the diode is the CATHODE.
- The 1M resistor beside the JUMPER, the 100pF and 2.2uF cap is actually 560K in actual SEVERE units.
- Leave the pads empty labeled as "LED" just above the 1N4001 protection diode.

There you have it!. Rawk on!.

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MXR Micro Chorus MN3007 retrofit

This has been discussed at the stompbox forum. First, This is NOT yet verified as far as I'm concerned. I haven't built one either since I have my CE-2 clone. The layout is only based from the retrofit's schematic using MN3007 BBD instead of the original SAD512. Suppose, if the retrofit schematic is correct and working, then there is no reason that the layout won't work. By then, build at your own risk!. Pot is 500K reverse log(audio) type. Transistors could be any common NPN's (2N5088, 2N3904, etc).

(PS: May mga follower na din pala ako na taga.PM..pagkakuyaw jud mga bai!..)

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Echo Base Digital Delay

This is my version of Ian's(slacker at DIYstompboxes.com) Echo Base PT2399 digital delay with minor alterations. I use JFET switching instead of 4066 CMOS switching. Some time ago I had problems with this CMOS leading my unit to fail and I don't even know why. Haha. Anyway, pot values are; LEVEL, REPEAT, and DEPTH is 100K-audio(you might want to try linear tapered pots on these); TIME is 50K linear taper; and SPEED is 1M linear( but I used reverse log taper on my build, so you decide!).
I use J113 for the JFET's salvaged from an old broken DOD pedal. You can use either J201 or similar. And also I used an 11 volt zener(1N4741) as protection diode. Bypass switching is illustrated in the pdf file.
The layout is very compact, designed to accomodate miniature electrolytics or boxed film capacitors. Layout's verified? Oh yes!

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Mad Professor Snow White Autowah

Here you go, this is the Mad Professor Snow White Autowah layout.Very much verified and working! Enjoy fellas.

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EQ and more Distortions!

Yamaha NE-1 and some customized distortion circuits to be posted this week. More over on this next time!

Tech 21 XXL

Here you go as requested, this is the Tech 21 XXL distortion layout minus the CMOS switching and the input buffer of the original circuit. You may want to add a capacitor from 0.1uF-1uF in the jumper labeled as "Cin?" and also changing the biasing ressistor labeled "100K??" into a 1M resistor. Anyway, that is just only a suggestion. Pots are all 100K LINEAR.

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DNA Gain F***er 2

This is the layout of the Gain F***er 2 distortion from DNA Analogic. Pads are provided to FETs and bipolar transistors that has different pinouts. Pots are all 100K. I would recommend using log tapers at DRIVE and LEVEL controls, a reverse audio taper at CUT, and a linear one at the FXXX control. Enjoy!

Layout Download