1590B · 4 knobs
Exar MT-1 MetalVerified
Based on the Exar MT-1 Metal· 1 other board clones it
- Category
- Distortion
- Controls
- Level · High · Low · Distortion
- Build
- Vero· 20×20· 23 cuts, 9 links
- Layout
- Verified · Tagboard Effects marks it as built and working
- Tags
- Distortion, Exar
From the post
Hi yall. Noticed a week or so back that it's been exactly ten years since my first post here. To celebrate the occasion, i thought i'd post something. There's been a number of slower years along the way, but so it goes. Life has it's ups and downs. To quote one of the more interesting british bands i've found in recent years: "It's alright now. Not what you hoped for, but that's ok. Teenage hopes are never less than perfect anyway." Now for the layout. There had been a trace up on FSB for years and it seemed a bit wonky on couple of details. Vitalii checked his unit out and there were a couple of errors on that old trace. His new trace seems to be spot on. Now, this probably won't be the low-parts-count / easy build alternative for HM-2 style sounds, but this may still be nice 1590B-sized build with enough distorion. There's also room for tweaking. For examble, one could sub one or even both clipping diode pairs for LEDs or Schottkys or use a on/off/on switch for changing them on the fly. Hi/Lo gyrator controls seem to be quite effective as well. I bet this will be a fun distortion build with no special parts required. Sadly, no youtube demos to be found.. Should you build one of these and a make a demo? ...So i could post it up?
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 30 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 1 value the reader of this layout was not sure of
- Which transistor each BC550/BC547 label belongs to is by position: the two upper ones taken as BC550, the middle-right and bottom ones as BC547
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 10 | ||||
| ×6 | 10K | 10k | read from the layout by eye | |
| ×4 | 1K | 1k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| ×2 | 470K | 470k | read from the layout by eye | |
| ×2 | 470Ω | 470 | read from the layout by eye | |
| ×2 | 56K | 56k | read from the layout by eye | |
| ×2 | 3.3K | 3.3k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 12K | 12k | read from the layout by eye | |
| ×1 | 33K | 33k | read from the layout by eye | |
| Capacitors 11 | ||||
| ×1 | 100pF | 100p | read from the layout by eye | |
| ×1 | 470pF | 470p | read from the layout by eye | |
| ×1 | 1nF | 1n | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×1 | 22nF | 22n | read from the layout by eye | |
| ×2 | 47nF | 47n | read from the layout by eye | |
| ×1 | 150nF | 150n | read from the layout by eye | |
| ×1 | 330nF | 330n | read from the layout by eye | |
| ×3 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×1 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×2 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| D1 | 1N5817 | 1N5817 | read from the layout by eye | |
| ×4 | 1N4148 | 1N4148 | D2, D3, D4, D5; read from the layout by eye | |
| Transistors 2 | ||||
| ×2 | BC550 | BC550 | read from the layout by eye | |
| ×2 | BC547 | BC547 | read from the layout by eye | |
| ICs 1 | ||||
| IC1 | TL072 | TL072 | read from the layout by eye | |
| Potentiometers 4 | ||||
| Distortion | B470K | B470k | Potentiometer | read from the layout by eye |
| Lo | B22K | B22k | Potentiometer | read from the layout by eye |
| Hi | B22K | B22k | Potentiometer | read from the layout by eye |
| Level | A10K | A10k | Potentiometer | read from the layout by eye |
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