Enclosure not stated · 2 knobs
Vox Tonebender compact versionVerified
Based on the Vox Tonebender compact version
From the post
I was doing a request, and this one was so close to the one requested, so i thought i'd draw it up too. Mark has published this in the past and that one fits easily in B, but the one i'm posting now should be doable even in A... :) This also features a trimmer for nailing the bias just right for your transistors.
It may sound a bit thin to someone's liking, so upping the 4n7 for 10n, 15n or maybe even 22n would give you much more bass responce.
First up, the PNP version (this uses positive ground, so a inverter circuit as a addon, perhaps?):
And the NPN (to be daisy chainable):
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.
Parts list 13 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 5 | ||||
| ×2 | 10K | 10k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| ×1 | 820Ω | 820 | read from the layout by eye | |
| Capacitors 4 | ||||
| ×1 | 100nF | 100n | read from the layout by eye | |
| ×1 | 4.7nF | 4.7n | read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×1 | 15uF | 15u | electrolytic; read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | PNP Ge | PNP GE | legend: Q1-Q2 are PNP Ge; read from the layout by eye | |
| Q2 | PNP Ge | PNP GE | legend: Q1-Q2 are PNP Ge; read from the layout by eye | |
| Potentiometers 2 | ||||
| Attack | B1K | B1k | Potentiometer | read from the layout by eye |
| Level | A50K | A50k | Potentiometer | read from the layout by eye |