Enclosure not stated
FAL Treble Boosters
Based on the FAL Treble Boosters
From the post
Found these posted by the one and only pinkjimiphoton on the usual places. Both are very old and rare always on fixed treble boosters. Should be quick fun small builds. You can easily make them NPN by flipping the electrolytic caps, power and ground connections. I believe low gain transistors will work fine in them.
FAL Treble Booster 1967
FAL Treble Booster 1969
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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Check before you build · 1 value the reader of this layout was not sure of
- 25uF electrolytic at bottom left: printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 4 | ||||
| ×1 | 4.7k | 4.7k | read from the layout by eye | |
| ×1 | 68k | 68k | read from the layout by eye | |
| ×1 | 10k | 10k | read from the layout by eye | |
| ×1 | 1k | 1k | read from the layout by eye | |
| Capacitors 4 | ||||
| ×1 | 100nF | 100n | read from the layout by eye | |
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| ×1 | 25uF | 25u | electrolytic; read from the layout by eye | |
| Transistors 1 | ||||
| Q1 | PNP Ge | PNP GE | germanium PNP, type not specified; read from the layout by eye | |