Enclosure not stated · 4 knobs
Ibanez TS808 with Bass ControlVerified
Based on the Ibanez TS808 Tube Screamer· 15 other boards clone it
From the post
Request. This layout adds a Timmy type bass control to the TS808 (but with the lugs swapped round so bass increases as you turn clockwise) . I could have just added this to the existing TS808 post but think it's worth separating them to show two distinct build options. I managed to shift things around so that the board ended up exactly the same size as the 3 knob version so there is no board size compromise if you prefer the extra tone control.
It may be worth experimenting the the 220n and 220R filter at Tone 2 so the Bass and Tone pots compliment each other to your liking.
And for those who really like the Timmy, this version uses both the Timmy Bass and Treble controls.
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 29 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 1 value the reader of this layout was not sure of
- 20n at the left edge under the 51K: printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 10 | ||||
| ×1 | 47R | 47 | read from the layout by eye | |
| ×1 | 100R | 100 | read from the layout by eye | |
| ×1 | 220R | 220 | read from the layout by eye | |
| ×4 | 1K | 1k | read from the layout by eye | |
| ×1 | 3K3 | 3.3k | read from the layout by eye | |
| ×1 | 4K7 | 4.7k | read from the layout by eye | |
| ×7 | 10K | 10k | read from the layout by eye | |
| ×1 | 51K | 51k | read from the layout by eye | |
| ×2 | 510K | 510k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| Capacitors 10 | ||||
| ×1 | 51p | 51p | read from the layout by eye | |
| ×1 | 20n | 20n | read from the layout by eye | |
| ×1 | 39n | 39n | read from the layout by eye | |
| ×1 | 47n | 47n | read from the layout by eye | |
| ×1 | 100n | 100n | read from the layout by eye | |
| ×2 | 220n | 220n | read from the layout by eye | |
| ×3 | 1u | 1u | read from the layout by eye | |
| ×1 | 10u | 10u | electrolytic; read from the layout by eye | |
| ×1 | 47u | 47u | electrolytic; read from the layout by eye | |
| ×1 | 100u | 100u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| D1 | 1N914 | 1N914 | read from the layout by eye | |
| D2 | 1N914 | 1N914 | read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | 2N5088 | 2N5088 | NPN silicon, legend: try 2N5088 or similar, and check orientation; read from the layout by eye | |
| Q2 | 2N5088 | 2N5088 | NPN silicon, legend: try 2N5088 or similar, and check orientation; read from the layout by eye | |
| ICs 1 | ||||
| IC | JRC4558 | JRC4558 | read from the layout by eye | |
| Potentiometers 4 | ||||
| Drive | A500K | A500k | Potentiometer | read from the layout by eye |
| Bass | B50K | B50k | Potentiometer | read from the layout by eye |
| Tone | B10K | B10k | Potentiometer | read from the layout by eye |
| Level | A100K | A100k | Potentiometer | read from the layout by eye |
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