Enclosure not stated · 2 knobs
Electro Harmonix Full Double TrackingVerified
Based on the Electro-Harmonix Full Double Tracking
From the post
Here is a verified layout for a quite unknown slapback-echo EH pedal.
You can find the original FSB thread here.
I've added an output boost to cover volume loss.
I've found only one video around but didn't sound great.
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 34 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 12 | ||||
| ×3 | 47K | 47k | read from the layout by eye | |
| ×5 | 100K | 100k | read from the layout by eye | |
| ×2 | 10M | 10M | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 5K1 | 5.1k | read from the layout by eye | |
| ×2 | 4K7 | 4.7k | read from the layout by eye | |
| ×3 | 1K | 1k | read from the layout by eye | |
| ×1 | 12K | 12k | read from the layout by eye | |
| ×2 | 6K8 | 6.8k | read from the layout by eye | |
| ×1 | 56K | 56k | read from the layout by eye | |
| ×3 | 33K | 33k | read from the layout by eye | |
| ×1 | 330K | 330k | read from the layout by eye | |
| Capacitors 11 | ||||
| ×3 | 100n | 100n | read from the layout by eye | |
| ×2 | 22n | 22n | read from the layout by eye | |
| ×1 | 4n7 | 4.7n | read from the layout by eye | |
| ×2 | 1n | 1n | read from the layout by eye | |
| ×1 | 33p | 33p | read from the layout by eye | |
| ×1 | 470p | 470p | read from the layout by eye | |
| ×1 | 100p | 100p | read from the layout by eye | |
| ×1 | 10u | 10u | electrolytic; read from the layout by eye | |
| ×2 | 22u | 22u | electrolytic; read from the layout by eye | |
| ×1 | 100u | 100u | electrolytic; read from the layout by eye | |
| ×2 | 1u | 1u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| D1 | 9.1V Zener | 9V1 | read from the layout by eye | |
| D2 | 1N4148 | 1N4148 | read from the layout by eye | |
| Transistors 2 | ||||
| ×1 | BS170 | BS170 | MOSFET; read from the layout by eye | |
| ×2 | 2N5088 | 2N5088 | printed 5088; read from the layout by eye | |
| ICs 3 | ||||
| ×1 | 4558 | 4558 | read from the layout by eye | |
| ×1 | CD4047BE | CD4047BE | printed 4047BE; read from the layout by eye | |
| ×1 | v3205 | V3205 | BBD; read from the layout by eye | |
| Potentiometers 2 | ||||
| Blend | A10K | A10k | Potentiometer | read from the layout by eye |
| Level | C5K | C5k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| TR1 | 100K | 100k | Bias, multiturn; read from the layout by eye | |
| Switches 1 | ||||
| Delay | SPST | SPST | Sw 1 / Sw 2; read from the layout by eye | |