Enclosure not stated · 3 knobs
T-Rex Mudhoney V1.1Verified
Based on the T-Rex Mudhoney· 1 other board clones it
- Category
- Distortion
- Build
- Vero· 18×18· 22 cuts, 9 links
- Layout
- Verified · Tagboard Effects marks it as built and working
- Tags
- Distortion, Overdrive, T-Rex
From the post
I recall reading how most of the Mudhoney DIY builds were just not sounding right.. Recently re-traced on FSB by Kasper, from his V1.1 version of the pedal - there may have been a fault with the schematics that previously floated around the web. When i saw this, i thought "the switch shouldn't work like that".. But it seems like it really does, and with this configuration, instead of the Ruetz-style mods on the Rat, one may finally get that Mudhoney (err.. tuned Rat?) tone out from a stripboard. There are the BJT transistor buffers in place to keep the topology close to an idol, but obviously the electronic switching is removed to accomodate true bypass. The oldee PSG demo may look outdated today, but it does not sound bad. And hey! It starts with a Dinosaur Jr riff with the pedal! I'll leave a note on the orginal take of this layout...
..And there's been slight development. This V2 of the layout incorporates 47R CLR for power supply and a 10K pulldown at the output as on Kasper's later revision of the schem. Making this now verbatim with the original. I doubt it'll sound any different from the slightly smaller layout above. But for the sake of completeness.. Here's a layout again as revision 2.
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 31 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 10 | ||||
| ×5 | 10K | 10k | read from the layout by eye | |
| ×3 | 1K | 1k | read from the layout by eye | |
| ×3 | 1M | 1M | read from the layout by eye | |
| ×2 | 510K | 510k | read from the layout by eye | |
| ×1 | 1.5K | 1.5k | read from the layout by eye | |
| ×1 | 2.2K | 2.2k | read from the layout by eye | |
| ×1 | 560Ω | 560 | read from the layout by eye | |
| ×1 | 150Ω | 150 | read from the layout by eye | |
| ×1 | 100Ω | 100 | read from the layout by eye | |
| ×1 | 47Ω | 47 | read from the layout by eye | |
| Capacitors 11 | ||||
| ×1 | 33pF | 33p | read from the layout by eye | |
| ×1 | 100pF | 100p | read from the layout by eye | |
| ×1 | 1nF | 1n | read from the layout by eye | |
| ×1 | 4.7nF | 4.7n | read from the layout by eye | |
| ×2 | 22nF | 22n | read from the layout by eye | |
| ×2 | 100nF | 100n | read from the layout by eye | |
| ×2 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×3 | 4.7uF | 4.7u | electrolytic; read from the layout by eye | |
| ×1 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 3 | ||||
| D1 | 1N5817 | 1N5817 | read from the layout by eye | |
| D2 | 1N4148 | 1N4148 | read from the layout by eye | |
| D3 | 1N4148 | 1N4148 | read from the layout by eye | |
| Transistors 2 | ||||
| ×2 | BC546 | BC546 | BJTs are BC546; read from the layout by eye | |
| ×1 | 2N5457 | 2N5457 | JFET; read from the layout by eye | |
| ICs 1 | ||||
| IC1 | OP07 | OP07 | read from the layout by eye | |
| Potentiometers 3 | ||||
| Gain | A47K | A47k | Potentiometer | read from the layout by eye |
| Tone | B100K | B100k | Potentiometer | read from the layout by eye |
| Level | B10K | B10k | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| Boost | SPDT | SPDT | toggle; read from the layout by eye | |
Other boards based on the T-Rex Mudhoney
- T-Rex Mudhoney Tagboard Effects