Enclosure not stated · 3 knobs
Roger Mayer Page 1Verified
Based on the Roger Mayer Page 1
- Category
- Distortion
- Build
- Vero· 19×13· 18 cuts, 8 links
- Layout
- Verified · Tagboard Effects marks it as built and working
- Tags
- Distortion, Fuzz, Roger Mayer
From the post
Request. Info about the original from Roger Mayer:
In 1964 I designed my first fuzz guitar effects pedal that was used by Jimmy Page and Big Jim Sullivan and featured on many early hit records. I am pleased to announce that after 40 years this early ground breaking fuzz will be available again. It uses carefully selected germanium transistors and has the same distortion section as the original 1964 version. An added carefully tuned passive fatness control follows the distortion section and this adds fatness without messing up the guitar's detail or the distortion characteristics. It has all the features of the new Vision Series with Hard Wire and Buffered Dual Outputs and is housed in the same style of new enclosure. This reissue meets our strict guidelines of keeping the best of the old but also adding some new noteworthy modern features and we at Roger Mayer welcome you to step on to a piece of genuine history.
Page 1 Front Panel Controls
DRIVE: This sets the amount of distortion.
FATNESS: A combination circuit tailored to provide control to the overall tone depth and is not just a simple top cut circuit.
OUTPUT:The output level boost available can also be used to drive the amplifier very hard if required.
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 24 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 10 | ||||
| ×4 | 470K | 470k | read from the layout by eye | |
| ×3 | 10K | 10k | read from the layout by eye | |
| ×2 | 39K | 39k | read from the layout by eye | |
| ×2 | 33K | 33k | read from the layout by eye | |
| ×1 | 47R | 47 | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 2M2 | 2.2M | read from the layout by eye | |
| ×1 | 18K | 18k | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| ×1 | 1K5 | 1.5k | read from the layout by eye | |
| Capacitors 6 | ||||
| ×1 | 10n | 10n | read from the layout by eye | |
| ×2 | 1n | 1n | read from the layout by eye | |
| ×1 | 2n2 | 2.2n | read from the layout by eye | |
| ×1 | 220u | 220u | electrolytic; read from the layout by eye | |
| ×2 | 22u | 22u | electrolytic; read from the layout by eye | |
| ×1 | 2u2 | 2.2u | electrolytic; read from the layout by eye | |
| Transistors 3 | ||||
| Q1 | BC550C | BC550C | read from the layout by eye | |
| Q2 | AC128 | AC128 | germanium; read from the layout by eye | |
| Q3 | AC128 | AC128 | germanium; read from the layout by eye | |
| ICs 1 | ||||
| ×1 | LM301N | LM301N | read from the layout by eye | |
| Potentiometers 3 | ||||
| Drive | B100K | B100k | Potentiometer | read from the layout by eye |
| Fatness | B100K | B100k | Potentiometer | read from the layout by eye |
| Output | A100K | A100k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×1 | 47K | 47k | set IC pin 6 to half the supply; read from the layout by eye | |