Project · Bass
EHX™ Hog's Foot Replica
This project is a replica of the very simple circuit that was the original vintage Electro-Harmonix™ Mole or early version Hog's Foot™. This booster is somewhat similar to the EHX™ LPB, but it is tuned for bass. It is built on the same PCB (CB1) that is used in the LPB2™ project. Trademarks mentioned on this page belong to their owners and NOT General Guitar Gadgets.
Parts layout
Parts Layout / Wiring Diagram
What you will need
Bill of Materials
Version 2012May09 · Copyright 2007 JD Sleep · Permission refused for posting/serving this file from any site other than www.generalguitargadgets.com · Trademarks are property of their owners
Resistors
| Resistor ID | Value | 3-band Marking | 4-band Marking |
|---|---|---|---|
| R1 | 430k | yellow-orange-yellow | yellow-orange-black-orange |
| R2 | 43k | yellow-orange-orange | yellow-orange-black-red |
| R3 | 10k | brown-black-orange | brown-black-black-red |
| R4 | 390 ohm | orange-white-brown | orange-white-black-black |
| R5 | (Potentiometer) | ||
| R7 | 1k | brown-black-red | brown-black-black-brown |
| R9 | 27k | red-violet-orange | red-violet-black-red |
Capacitors
| Capacitor ID | Value | Type | Possible Marking |
|---|---|---|---|
| C1 | 3.3µF | Aluminum Electrolytic | 33µF |
| C2 | 3.3µF | Aluminum Electrolytic | 33µF |
| C3 | none | ||
| C4 | 100µF | Aluminum Electrolytic | 100µF |
| C5 | 0.1µF | Film or ceramic | 104 |
| C6 | 0.1µF | Film or ceramic | 104 |
Potentiometers
| Part ID | Value | Type |
|---|---|---|
| R5 - Volume Control | 100k | Linear Taper |
Other
| Part ID | Part Name |
|---|---|
| D1 | 1N914 |
| D2 | LED |
| Q1 | 2N5089 or other NPN bipolar junction transistor |
| J1 | Stereo quarter-inch jack |
| J2 | Mono quarter-inch jack |
| J3 | DC Jack |
| B1 | 9 volt battery (not included in the Kit) |
| Sw1 Examples of other NPN bipolar junction transistors: ● 2N5088 (original) ● 2N5089 (low noise version of 2N5088) ● 2N3904 ● 2N4401 ● many others | Heavy Duty 3PDT foot switch 9v battery snap, Printed Circuit Board, 24 gauge stranded wire, Enclosure, Knobs |
More about this project
Notes, sounds and related links
Ready to build? We have the kit.
Would you like a Ready to Solder Circuit Board for this project?