Enclosure not stated · 4 knobs
Fuzzhead Fx AN-602 O.D.Verified
Based on the Fuzzhead Fx AN-602 O.D
From the post
Just is a variation of a russian big muff. The base eq of the circuit is preserved i. e. dark, bassy and heavy but there is much more gain and volume on tap. There is also an old school inductor based Mid Boost circuit at the recovery stage that boost and saturate frequencies at 800Hz.
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 Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.
Parts list 31 rows
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Check before you build · 3 values the reader of this layout was not sure of
- 500pF x3 (columns 4 and 19 near the top, column 4 lower left): printed clearly, unusual value
- 1.5M at column 10 (rows M-O): drawn translucent over cuts, read as 1,5M
- 10K at column 12 (rows I-L): drawn translucent, partly overlapped by the 10nF
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 13 | ||||
| ×1 | 82Ω | 82 | read from the layout by eye | |
| ×3 | 390Ω | 390 | read from the layout by eye | |
| ×2 | 2.2K | 2.2k | read from the layout by eye | |
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| ×1 | 5.1K | 5.1k | read from the layout by eye | |
| ×1 | 5.6K | 5.6k | read from the layout by eye | |
| ×1 | 10K | 10k | read from the layout by eye | |
| ×3 | 12K | 12k | read from the layout by eye | |
| ×2 | 22K | 22k | read from the layout by eye | |
| ×4 | 100K | 100k | read from the layout by eye | |
| ×2 | 470K | 470k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| ×1 | 1.5M | 1.5M | read from the layout by eye | |
| Capacitors 7 | ||||
| ×3 | 500pF | 500p | read from the layout by eye | |
| ×1 | 3.9nF | 3.9n | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×2 | 56nF | 56n | read from the layout by eye | |
| ×6 | 100nF | 100n | read from the layout by eye | |
| ×1 | 330nF | 330n | read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×4 | KD521 | KD521 | D1-D4; legend: KD521 / 1N4148; read from the layout by eye | |
| D5 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 4 | ||||
| Q1 | KT3102E | KT3102E | legend: KT3102E / BC109C; read from the layout by eye | |
| Q2 | KT3102E | KT3102E | legend: KT3102E / BC109C; read from the layout by eye | |
| Q3 | KT3102E | KT3102E | legend: KT3102E / BC109C; read from the layout by eye | |
| Q4 | KT3102E | KT3102E | legend: KT3102E / BC109C; read from the layout by eye | |
| Inductors 1 | ||||
| ×1 | 100mH | 100mH | read from the layout by eye | |
| Potentiometers 4 | ||||
| Tone | B100K | B100k | Potentiometer | read from the layout by eye |
| Mid Boost | B5K | B5k | Potentiometer | read from the layout by eye |
| Drive | A100K | A100k | Potentiometer | read from the layout by eye |
| Volume | A100K | A100k | Potentiometer | read from the layout by eye |