Silicon Tone Bender by Mic Tester

Silicon Tone Bender by Mic Tester

This project was originally posted over at FreeStompboxes,org. This is a great sounding Tone Bender. Easy to build, and parts are not hard to find. I haven’t tried it but it would probably work with a range of other transistors.

PCBs

I designed tis PCB and made it available through PCBWay.com on their shared service. You can order boards for yourself from their shared service here:

https://www.pcbway.com/project/shareproject/Tone_Bender_Si_f1f421a8.html

Schematic

Here is my drawing of the schematic for reference.

Parts List

Part NumberValue
R11M
R2150K
R322K
R410K
R51K
R610K
R7100r
R810K
R910K
R102K2
R1110K
R1210K
R1347K
R1447K
C110n
C2100n
C3100n
C4100n
C58n2
C610µ
C747µ
C84µ7
D11n5817
D2LED
Q1BC109
Q2BC109
Q3BC109
Q4BC109
GAINB1K
TONEB50K
VOLUMEA100K

Drilling Guide

Download the drilling guide here.

Print the guide at 100% and wrap it around your enclosure with a piece of tape. This guide is meant to fit a 1590B sized enclosure.

Pictures