Mod CONTORTIONIST Manual Download Page 1

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Copyright © 2014 by modkitsdiy.com

Use these instructions to learn:

How to build an effects pedal for fuzz with non-selective frequency tripler.

The Contortionist kit is a limited edition, all analog, high octane fuzz box. It produces fuzz with layered
octave overtones similar to those produced by an electronic-bow. The frequency multiplier circuitry creates
harmonics that swell and recede depending on gain setting, pick attack, neck position and pickup. This is a
high gain circuit that can put out up to 2 volts and will provide ample amounts of sustain.

THE CONTORTIONIST (K-990)

www.modkitsdiy.com

Warning: This circuit was designed for use with a 9 VDC power supply only.

TO 

AMP 

IN

FROM 

GUITAR 

OUT

Unplug when not in use

to save battery life.

The Contortionist

Modkitsdiy.com

OUTPUT

GAIN

High Octane Fuzz Box

9 VDC

CENTER (-) 

ADAPTER

Summary of Contents for CONTORTIONIST

Page 1: ...The frequency multiplier circuitry creates harmonics that swell and recede depending on gain setting pick attack neck position and pickup This is a high gain circuit that can put out up to 2 volts and...

Page 2: ...tion 1 Mount Large Components p 6 Section 2 Wire Large Components p 6 Section 3 Mount Components to Terminal Strips p 8 Section 4 Finishing Up p 9 ASSEMBLY DRAWINGS 4 Drawings pp 10 11 These are the l...

Page 3: ...1 3 RING LUG SLEEVE LUG TIP LUG GROUND LUG TIP LUG DPDT Foot Switch P H498 1 Potentiometers 1KL and 250KA R VA1KL 1 1 2 3 R VA250KA 1 4 Screw 3 8 long S HS440 38 7 4 Nut S HHN440 7 4 Lock Washer S HLW...

Page 4: ...QMPSA13 1 NPN Darlington MPSA13 K PQ 2N3906 1 PNP BJT 2N3906 2N 3906 E B C K P2N3904TAR 1 NPN BJT 2N3904TAR 2N 3904 E B C 22 F 50V C ET22 50 1 22 F Polarized Capacitor 50V 0 1 F Capacitor 100V C PEID...

Page 5: ...e a good solder joint Take your time with each connection and make sure that all components are connected and will remain connected if your project is bumped or shaken Bend the component lead or wire...

Page 6: ...f the enclosure CENTER PIN LUG POSITIVE SWITCH LUG POSITIVE LUG Mount the input jack in the 3 8 hole on the left side of the enclosure with the hardware provided The washer goes under the nut on the o...

Page 7: ...inal holes Strip and tin a 1 piece of wire and connect terminal 13 to 22 Do not solder at 13 yet Suggestion 3 wires components will be connected to terminal 13 Consider connecting to the lower termina...

Page 8: ...cap to terminals 7 and 11 This should be mounted upside down to allow room for other components to be mounted later in the instructions Do not solder at 11 yet Connect a 10K resistor to terminals 9 a...

Page 9: ...power Plug another cable from the output jack left side to your amp s input When using a battery for power remember to unplug from the input jack of the pedal to turn it off and save battery life It s...

Page 10: ...1 2 3 1 2 3 TOP LEFT SIDE RIGHT SIDE 15 32 1 8 1 8 1 8 1 8 1 8 1 8 1 8 3 8 3 8 15 32 5 16 5 16 DRAWING 1 DRAWING 2 10 INSIDE VIEW OF THE ENCLOSURE 1 2 3 4 5 6 250KA 1KL FUZZ VOLUME...

Page 11: ...16 17 18 19 20 21 22 250KA 1KL 12 6 14 4 2 3 5 7 10 11 13 15 1 2 3 1 2 3 1 2 3 4 5 6 TIP TIP SLEEVE SLEEVE RING 1 8 9 16 17 18 19 20 21 22 250KA 1KL 12 6 14 4 2 5 7 10 11 13 15 1 3M 1 10K MPS A13 E B...

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