Proto Pedal Example: Analog Equalizer Project - SparkFun Learn
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Image result for passive 3 band eq wiring | Diy guitar pedal, Diy guitar amp, Guitar pedals
Guitar Pedal X - GPX Blog - A Brief Hobbyist Primer on Key Tone Stack Types and Circuit EQ Configurations - in collaboration with Master-Builder Adrian 'Thorpy' Thorpe
Guitar/Bass Graphic EQ
Proto Pedal Example: Analog Equalizer Project - SparkFun Learn
Modify your Boss GE-7 Equalizer with upgrades! Mod service Only!
Schematics – electric-safari
Guitar FX Layouts: 2, 4 & 8 Band Gyrator EQ
Simulating the Boss GE-7 Graphic Equalizer in LTSpice