Enclosure not stated · 4 knobs
Guyatone MM2 Metal Master w. mods
Based on the Guyatone MM2 Metal Master w. mods
- Category
- Distortion
- Build
- Vero· 30×21· 58 cuts, 27 links
- Layout
- Unverified · no build reported at Dirtbox Layouts yet
- Tags
- Distortion, Guyatone
From the post
Schematic is avaiable HERE. Some mods needed to be done to make it more versitale. First, the 3 position slider switch is replaced by a rotary switch. Second, High and Mid eq sections were hardwired internally. Since they are pretty much the same as in Boss MT-2 High and Mid eq sections, it was pretty easy to add external pots for these.
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 36 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 2 values the reader of this layout was not sure of
- 160K at column 12, rows A-C: printed clearly, unusual value
- 27nF lying on row U, columns 11-13: printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 11 | ||||
| ×9 | 100K | 100k | read from the layout by eye | |
| ×4 | 22K | 22k | read from the layout by eye | |
| ×6 | 2.2K | 2.2k | read from the layout by eye | |
| ×3 | 1K | 1k | read from the layout by eye | |
| ×4 | 10K | 10k | read from the layout by eye | |
| ×4 | 47K | 47k | read from the layout by eye | |
| ×2 | 33K | 33k | read from the layout by eye | |
| ×2 | 220K | 220k | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| ×1 | 160K | 160k | read from the layout by eye | |
| ×1 | 15K | 15k | read from the layout by eye | |
| Capacitors 12 | ||||
| ×5 | 100pF | 100p | read from the layout by eye | |
| ×1 | 3.9nF | 3.9n | read from the layout by eye | |
| ×4 | 10nF | 10n | read from the layout by eye | |
| ×1 | 15nF | 15n | read from the layout by eye | |
| ×1 | 22nF | 22n | read from the layout by eye | |
| ×1 | 27nF | 27n | read from the layout by eye | |
| ×2 | 33nF | 33n | read from the layout by eye | |
| ×3 | 47nF | 47n | read from the layout by eye | |
| ×1 | 220nF | 220n | read from the layout by eye | |
| ×3 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×4 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×2 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 3 | ||||
| D1 | 1N4148 | 1N4148 | legend: 1N4148/1N914; read from the layout by eye | |
| D2 | 1N4148 | 1N4148 | legend: 1N4148/1N914; read from the layout by eye | |
| D3 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 1 | ||||
| Q1 | 2N3904 | 2N3904 | legend: 2N3904, 2N5088 etc.; read from the layout by eye | |
| ICs 4 | ||||
| IC1 | 1458 | 1458 | legend: 1458, 4558, 4580 etc.; read from the layout by eye | |
| IC2 | 1458 | 1458 | legend: 1458, 4558, 4580 etc.; read from the layout by eye | |
| IC3 | 1458 | 1458 | legend: 1458, 4558, 4580 etc.; read from the layout by eye | |
| IC4 | 1458 | 1458 | legend: 1458, 4558, 4580 etc.; read from the layout by eye | |
| Potentiometers 4 | ||||
| Gain | A250K | A250k | Potentiometer | read from the layout by eye |
| High | B10K | B10k | Potentiometer | legend: 10kB or 10kW; read from the layout by eye |
| Mid | B10K | B10k | Potentiometer | legend: 10kB or 10kW; read from the layout by eye |
| Level | A50K | A50k | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| Switch | 4P3T rotary | 4P3T ROTARY | rotary; read from the layout by eye | |