Mod K-975 Manual Download Page 1

1

Copyright © 2016 by modkitsdiy.com

Use these instructions to learn:

How to build an effects pedal for octave fuzz.

The Ring Resonator is an octave up fuzz effect that is an all analog design that captures those late 60's 
octave up fuzz tones. Transformer coupled germanium diodes produce sounds that range from a subtle 
octave up to thick, harmonically rich sonic textures, and synth like tones. Experimenting with different 
pickups and tone control settings on your guitar with the Ring Resonator can also produce sitar like sounds.

THE RING RESONATOR (K-975)

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 Ring Resonator

Modkitsdiy.com

OUTPUT

BOOST

An Octave Up Fuzz

9 VDC

CENTER (-) 

ADAPTER

Summary of Contents for K-975

Page 1: ...s that range from a subtle octave up to thick harmonically rich sonic textures and synth like tones Experimenting with different pickups and tone control settings on your guitar with the Ring Resonato...

Page 2: ...They should be separated and used as a reference to help assemble the kit correctly 2 Visit www modkitsdiy com if you have any problems when first turning on your pedal for troubleshooting help Remem...

Page 3: ...PUL1569 3 FT PARTS LIST 1 3 RING LUG SLEEVE LUG TIP LUG GROUND LUG TIP LUG DPDT Foot Switch P H498 1 Potentiometers 1KL and 500KA R VA1KL 1 1 2 3 R VA500KA 1 4 Screw 3 8 long S HS440 38 7 4 Nut S HHN4...

Page 4: ...PEID1 100 1 104J 102J red red brown gold 220 220 Resistor W R A220 1 yellow violet brown gold 470 470 Resistor W R A470 1 brown black red gold 1K 1k Resistor W R A1K 1 brown red red gold 1 2K 1 2k Re...

Page 5: ...ns will be made at that terminal That way you can decide whether it s best for you to solder the connection and leave space open for future connections or hold off on soldering until after every conne...

Page 6: ...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 7: ...r lugs so that the center pin lug is facing the bottom side of 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...

Page 8: ...s a short jumper wire Connect this jumper from the power jack s center pin lug to terminal 1 Use the excess length of this jumper to wrap around the connection points Strip and tin a 1 piece of wire a...

Page 9: ...ector 2N 3906 E B C 2N 5088 Connect the 1K resistor to terminal 5 and 15 Now solder the 5 connection Connect the 001 F cap to terminals 9 and 10 Connect the 22K resistor to terminals 9 and 11 Connect...

Page 10: ...cap to terminals 20 and 21 Make sure the negative end is connected to 21 Connect one of the 1N34A diodes to terminal 23 and the 500KA pot s lug 1 Make sure the black cathode end connects to the pot lu...

Page 11: ...2 3 1 6 5 4 1 2 3 1 2 3 DRAWING 1 TOP LEFT SIDE RIGHT SIDE INSIDE VIEW OF THE ENCLOSURE DRAWING 2 15 32 1 8 1 8 1 8 1 8 1 8 1 8 3 8 3 8 15 32 5 16 5 16 1 8 1KL 500KA 11...

Page 12: ...19 20 22 23 25 NC NC NC NC 2 3 1 6 5 4 1 2 3 1 2 3 1KL 500KA 1 8 9 15 16 19 20 22 23 25 NC NC NC NC 680K 1 1M 820K 33 F 50V 200K 220K 150p 2 2 0 2N 3906 E B C Q1 1K 001 22K E B C 2N 5088 Q2 1 2K 47K...

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