1590B · 4 knobs
Royal Albert Hall BenderVerified
Based on the Royal Albert Hall Bender
From the post
Happy Fuzz Friday everyone! Got a request for this one put forth on FSB. It's based on the ThroBak sTone Bender, which itself is just a straight clone of the Tone Bender Mk II Professional. The layout is setup for positive ground and PNP transistors. You can use a voltage inverter daughter board or flip any polarized components and use NPN transistors if you want to daisy chain this with other effects. Also, I added a 1k limiting resistor of the bias pot (far upper right side of the board) that may need to be adjusted to taste. Easy fit in a 1590B.
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 Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.
Parts list 16 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 4 | ||||
| ×3 | 100K | 100k | read from the layout by eye | |
| ×2 | 1K | 1k | read from the layout by eye | |
| ×1 | 2.2M | 2.2M | read from the layout by eye | |
| ×1 | 10K | 10k | read from the layout by eye | |
| Capacitors 4 | ||||
| ×1 | 100nF | 100n | read from the layout by eye | |
| ×2 | 10nF | 10n | read from the layout by eye | |
| ×2 | 4.7uF | 4.7u | electrolytic; read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| ×1 | 1N4001 | 1N4001 | printed 4001; read from the layout by eye | |
| Transistors 3 | ||||
| Q1 | 2N404 | 2N404 | legend: Q1-3: 2N404 or similar, PNP germanium transistors; read from the layout by eye | |
| Q2 | 2N404 | 2N404 | 2N404 or similar, PNP germanium; read from the layout by eye | |
| Q3 | 2N404 | 2N404 | 2N404 or similar, PNP germanium; read from the layout by eye | |
| Potentiometers 4 | ||||
| Attack | B1K | B1k | Potentiometer | read from the layout by eye |
| Bias | B50K | B50k | Potentiometer | read from the layout by eye |
| Pre Gain | B500K | B500k | Potentiometer | read from the layout by eye |
| Volume | A100K | A100k | Potentiometer | read from the layout by eye |