1590B · 3 knobs
Refractor (Legacy)
Based on the Klon Centaur / KTR· 1 other board clones it
- Category
- Overdrive
- Controls
- Treble · Output · Gain
- Difficulty
- Intermediate
- Price
- see vendor
From the vendor
A part-for-part replica of a mythical overdrive effect noted for its high-end tone and price.
The Refractor project is a straight-up clone of the Klon Centaur and Klon KTR. The goal in designing this PCB was space efficiency: there’s no shortage of Centaur clones that fit in larger enclosures, but ours was made for the 1590B (1290NS)—though it’s just as much at home in a 125B if that’s your style.
One perennially tricky thing about building a Centaur clone is wiring the bypass switch. Due to its unique buffered bypass arrangement, for most clones you have to solder three resistors to the switch itself and it can be time-consuming. To compensate for this, we’ve designed a bypass board that fits standard 3PDT switches and has spaces for all three resistors. From there, all you need to do is run four wires from the bypass PCB directly to the main PCB and you’re done. It’s available separately as the Refractor Bypass.
Schematic
The schematic is in the vendor's build document, page 4. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 65 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 29 | ||||
| R1 | 10k | 10k | ||
| R2 | 1M | 1M | ||
| R3 | 100k | 100k | ||
| R4 | 560R | 560 | ||
| R5 | 5k1 | 5.1k | ||
| R6 | 10k | 10k | ||
| R7 | 1k5 | 1.5k | ||
| R8 | 1k5 | 1.5k | ||
| R9 | 1k | 1k | ||
| R10 | 2k | 2k | ||
| R11 | 15k | 15k | ||
| R12 | 422k | 422k | ||
| R13 | 1k | 1k | ||
| R15 | 22k | 22k | ||
| R16 | 47k | 47k | ||
| R17 | 27k | 27k | ||
| R18 | 12k | 12k | ||
| R19 | 15k | 15k | ||
| R20 | 392k | 392k | ||
| R21 | 1k8 | 1.8k | ||
| R22 | 100k | 100k | ||
| R23 | 4k7 | 4.7k | ||
| R24 | 100k | 100k | ||
| R25 | 560R | 560 | ||
| R26 | 68k | 68k | ||
| R27 | 68k | 68k | ||
| R28 | 100k | 100k | ||
| R29 | 27k | 27k | ||
| R30 | 27k | 27k | ||
| Capacitors 22 | ||||
| C1 | 100n | 100n | ||
| C2 | 4u7 | 4.7u | elec | |
| C3 | 100n | 100n | ||
| C4 | 68n | 68n | ||
| C5 | 68n | 68n | ||
| C6 | 390n | 390n | ||
| C7 | 82n | 82n | ||
| C8 | 390pF | 390p | ||
| C9 | 1uF | 1u | ||
| C10 | 1uF | 1u | ||
| C11 | 2n2 | 2.2n | ||
| C12 | 27n | 27n | ||
| C13 | 820pF | 820p | ||
| C14 | 3n9 | 3.9n | ||
| C15 | 4u7 | 4.7u | elec | |
| C16 | 1uF | 1u | ||
| C17 | 47uF | 47u | elec | |
| C18 | 47uF | 47u | elec | |
| C19 | 1uF | 1u | elec | |
| C20 | 1uF | 1u | elec | |
| C21 | 1uF | 1u | elec | |
| C22 | 1uF | 1u | elec | |
| Diodes 7 | ||||
| D1 | Ge | GE | ||
| D2 | Ge | GE | ||
| D3 | 1N4002 | 1N4002 | ||
| D4 | 1N4002 | 1N4002 | ||
| Z1 | 1N4742 | 1N4742 | ||
| D9E | diodes | DIODES | ||
| D9L | are | ARE | ||
| ICs 3 | ||||
| IC1 | TL072 | TL072 | ||
| IC2 | TL072 | TL072 | ||
| IC3 | TC1044SCPA | TC1044SCPA | ||
| Potentiometers 3 | ||||
| TREBLE | 10KB | B10k | Potentiometer | |
| OUTPUT | 10KB | B10k | Potentiometer | |
| GAIN | 100KB | B100k | Potentiometer | |
| LEDs 1 | ||||
| LED1 | into | INTO | ||
Other boards based on the Klon Centaur / KTR
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