1590B · 3 knobs
Electro Harmonix Clone TheoryVerified
Based on the Electro-Harmonix Clone Theory· 2 other boards clone it
- Category
- Vibrato / Chorus
- Build
- Vero· 21×28· 43 cuts, 26 links
- Layout
- Verified · Tagboard Effects marks it as built and working
- Tags
- Chorus, Electro Harmonix, Vibe
From the post
Request for this nice sounding chorus/vibe pedal. Thanks to Scruffie for his schematic. It will fit in a 1590B if you want the aggravation, but a 125B would probably be a better choice.
The effect needs a 15V supply so you can either use a standalone 15V adapter if you have one, or build the included power daughterboard which with double the supply and then uses a regulator to reduce it to a stable 15V.
The schematic was based on a mono version of the old MN3007 Clone Theory, but this is the manufacturers information about the current XO version:
This recreation of the original 1970's Clone Theory is re-known for its very edgy chorus. Stereo outputs provide lush chorus and vibrato with a sparkling wash and liquid elegance.
CLONE THEORY, one of the most lush, deep and warm CHORUS/VIBRATO ever made, now in stereo. The CLONE THEORY’s depth and rate controls swing from one extreme to the other, giving the user an entire realm of possibility for tone.
[20th May: re-jigged slightly reduced the number of links, no corrections were made so the first layout posted should still be good]
and here's the stereo daughterboard for those wanting the option
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 46 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
- 160K (top left), 62K (left, by Depth 1), 300K x2 and 51K x2: printed clearly, unusual values
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 19 | ||||
| ×2 | 1K | 1k | read from the layout by eye | |
| ×1 | 6K8 | 6.8k | read from the layout by eye | |
| ×1 | 10K | 10k | read from the layout by eye | |
| ×2 | 12K | 12k | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| ×2 | 51K | 51k | read from the layout by eye | |
| ×1 | 62K | 62k | read from the layout by eye | |
| ×1 | 68K | 68k | read from the layout by eye | |
| ×4 | 100K | 100k | read from the layout by eye | |
| ×1 | 120K | 120k | read from the layout by eye | |
| ×2 | 150K | 150k | read from the layout by eye | |
| ×1 | 160K | 160k | read from the layout by eye | |
| ×2 | 200K | 200k | read from the layout by eye | |
| ×2 | 220K | 220k | read from the layout by eye | |
| ×2 | 300K | 300k | read from the layout by eye | |
| ×1 | 330K | 330k | read from the layout by eye | |
| ×1 | 390K | 390k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 2M2 | 2.2M | read from the layout by eye | |
| Capacitors 12 | ||||
| ×1 | 27p | 27p | read from the layout by eye | |
| ×1 | 560p | 560p | read from the layout by eye | |
| ×2 | 680p | 680p | read from the layout by eye | |
| ×2 | 22n | 22n | read from the layout by eye | |
| ×6 | 100n | 100n | read from the layout by eye | |
| ×1 | 220n | 220n | read from the layout by eye | |
| ×3 | 1u | 1u | read from the layout by eye | |
| ×1 | 4u7 | 4.7u | electrolytic; read from the layout by eye | |
| ×1 | 10u | 10u | electrolytic; read from the layout by eye | |
| ×1 | 470u | 470u | electrolytic; read from the layout by eye | |
| ×2 | 10U | 10u | electrolytic, daughterboard; read from the layout by eye | |
| ×1 | 47U | 47u | electrolytic, daughterboard; read from the layout by eye | |
| Diodes 1 | ||||
| ×2 | 1N5817 | 1N5817 | daughterboard; read from the layout by eye | |
| Transistors 1 | ||||
| Q1 | 2N4302 | 2N4302 | JFET; legend: try 2N5458; read from the layout by eye | |
| ICs 6 | ||||
| IC1 | RC4558P | RC4558P | read from the layout by eye | |
| IC2 | MN3007 | MN3007 | read from the layout by eye | |
| IC3 | CD4047BE | CD4047BE | read from the layout by eye | |
| IC4 | LM1458 | LM1458 | read from the layout by eye | |
| ×1 | ICL7660S | ICL7660S | daughterboard; read from the layout by eye | |
| Reg | 78L15 | 78L15 | daughterboard regulator; read from the layout by eye | |
| Potentiometers 3 | ||||
| Ch/Vib | B10K | B10k | Potentiometer | read from the layout by eye |
| Depth | B100K | B100k | Potentiometer | read from the layout by eye |
| Rate | C1M | C1M | Potentiometer | read from the layout by eye |
| Trimmers 3 | ||||
| Gain | 100K | 100k | read from the layout by eye | |
| Bias | 100K | 100k | read from the layout by eye | |
| Cancel | 5K | 5k | read from the layout by eye | |
| Switches 1 | ||||
| Vib/Flange | DPDT on/on | DPDT ON/ON | toggle; read from the layout by eye | |
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