125B · 3 knobs
Maestro Bass BrassmasterVerified
Based on the Maestro Brassmaster· 6 other boards clone it
- Category
- Fuzz
- Controls
- Bass · Sensitivity · Brass
- Build
- Perfboard
- Layout
- Verified · Effects Layouts (blog) marks it as built and working
- Tags
- Bass, Fuzz, Maestro
From the post
The Brassmaster was originally designed for bass and also picked up by guitarists. The circuit is very unique and originals are hard to come by. I was able to lay it out to fit in a 125B with board mounted pots.
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 Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.
Parts list 41 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 19 | ||||
| ×2 | 4.7K | 4.7k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| ×1 | 470Ω | 470 | read from the layout by eye | |
| ×3 | 10K | 10k | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×3 | 47K | 47k | read from the layout by eye | |
| ×2 | 6.8K | 6.8k | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| ×1 | 3.3K | 3.3k | read from the layout by eye | |
| ×3 | 2.2K | 2.2k | read from the layout by eye | |
| ×1 | 82K | 82k | read from the layout by eye | |
| ×2 | 1.5M | 1.5M | read from the layout by eye | |
| ×1 | 820Ω | 820 | read from the layout by eye | |
| ×3 | 150K | 150k | read from the layout by eye | |
| ×1 | 150Ω | 150 | read from the layout by eye | |
| ×2 | 220K | 220k | read from the layout by eye | |
| ×2 | 12K | 12k | read from the layout by eye | |
| ×1 | 390Ω | 390 | read from the layout by eye | |
| Capacitors 7 | ||||
| ×1 | 4.7nF | 4.7n | read from the layout by eye | |
| ×2 | 10nF | 10n | read from the layout by eye | |
| ×3 | 47nF | 47n | read from the layout by eye | |
| ×4 | 100nF | 100n | read from the layout by eye | |
| ×5 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×1 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×4 | 1N4148 | 1N4148 | printed 4148; read from the layout by eye | |
| ×1 | 1N4001 | 1N4001 | printed 4001; read from the layout by eye | |
| Transistors 7 | ||||
| Q1 | NPN silicon | NPN SILICON | type not given; read from the layout by eye | |
| Q2 | NPN silicon | NPN SILICON | type not given; read from the layout by eye | |
| Q3 | NPN silicon | NPN SILICON | type not given; read from the layout by eye | |
| Q4 | NPN silicon | NPN SILICON | type not given; read from the layout by eye | |
| Q5 | NPN darlington | NPN DARLINGTON | type not given; read from the layout by eye | |
| Q6 | NPN silicon | NPN SILICON | type not given; read from the layout by eye | |
| Q7 | NPN silicon | NPN SILICON | type not given; read from the layout by eye | |
| Transformers 1 | ||||
| ×1 | 42TM018 | 42TM018 | audio transformer; read from the layout by eye | |
| Potentiometers 3 | ||||
| Bass | B10K | B10k | Potentiometer | read from the layout by eye |
| Sensitivity | B10K | B10k | Potentiometer | read from the layout by eye |
| Brass | B10K | B10k | Potentiometer | read from the layout by eye |
| Switches 2 | ||||
| Harmonic | SPST | SPST | read from the layout by eye | |
| Brass | 3PDT on/on | 3PDT ON/ON | Brass Sw1-9; read from the layout by eye | |
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