Enclosure not stated
FoxRox Wah Retrofit FWRVerified
Based on the Foxrox Wah Retrofit FWR
From the post
This will probably be a popular build for people who use a Fuzz Face (or similar) and also an older style wah, and have a problem putting them in the usual order. Info from Foxrox about their original:
The Foxrox Wah Retrofit is a self-contained JFET buffer/amp circuit that gets installed into your Wah Wah pedal, giving it the ability to cut through any Fuzz Face or Fuzz Face clone. By essentially installing a "real" output section, the Wah Wah pedal becomes immune to the effects of loading, restoring range and depth to older, vintage Wah Wah pedals without affecting their vintage value. Newer, high-end "boutique" wah pedals, such as Teese RMC pedals also benefit from this mod because they are based on the same, classic inductor-based circuit. Since it is a basic JFET audio buffer/amplifier, this circuit can also be added to effects pedals that need more output, as well as effects that need more drive at the input.
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 9 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 3 | ||||
| ×5 | 47K | 47k | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| Capacitors 4 | ||||
| ×1 | 33pF | 33p | read from the layout by eye | |
| ×1 | 100n | 100n | read from the layout by eye | |
| ×1 | 1u | 1u | read from the layout by eye | |
| ×3 | 10u | 10u | electrolytic; read from the layout by eye | |
| ICs 1 | ||||
| IC | LF351 | LF351 | LF351 or similar single opamp; read from the layout by eye | |
| Trimmers 1 | ||||
| ×1 | 500K | 500k | read from the layout by eye | |