1590B · 3 knobs
Fuzz Dog· Repeater
Repeater - Vox Repeat Percussion
Based on the Vox Repeat Percussion· 1 other board clones it
- Category
- Wah / Envelope· Delay/Mod/Filter
- Controls
- Depth · Rate · Vol
- Difficulty
- Medium
- Price
- £39.60
- Tags
- delay-mod-filter
From the vendor
Instant Spacemen 3! Just add fuzz and wah.
Quirky little box of fun. The original was a box that plugged straight into the guitar jack socket. Sound? A reverse-sawtooth tremolo-type affair. Very choppy.
Stock, it cuts the signal completely between 'beats', giving the percussion effect the name suggests. This version has an optional depth knob to tame that chop and give a wider range of effect. It has also been updated for more output, and has an internal volume trimmer to set it to unity (or over, or under, as you wish).
Also added is a switch to change the speed range available. At higher speeds it sounds almost ring-mod-ish. Also included is an extra input capacitor so you can go with the original thin tone or a normal, full range tone.
Kit comes with a tested 2N2646 (the UJT transistor that does the magic).
If you want the PCB without parts there's a link for that at the bottom of the page.
Partial kit: PCB, all board-mounted components, pots.
Full kit: As above, plus footswitch and appropriate daughterboard/components for your selected bypass type (see Downloads section for details of those), jack sockets, DC socket, battery snap, hook-up wire, LED.
Enclosure (pre-drilled) is available as an option with full kits, and will not take a battery. Knobs are not included.
Inspired by: Vox Repeat Percussion
Difficulty: Medium
PCB size: 50 x 25mm
Knobs required: 2
Enclosure: 1590B
Direct-Connect compatible (4-way)
Download the INSTRUCTION PDF
Here's the doc for Version 4 since we still have some stock of the PCBs.
Schematic
The schematic is in the vendor's build document, page 3. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 22 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 12 | ||||
| R1 | 22K | 22k | ||
| R2 | 1M | 1M | ||
| R3 | 330K | 330k | ||
| R4 | 33K | 33k | ||
| R5 | 1K5 | 1.5k | ||
| R6 | 1M | 1M | ||
| R7 | 330K | 330k | ||
| R8 | 4K7 | 4.7k | ||
| R9 | 82K | 82k | ||
| R11 | 1K | 1k | ||
| R12 | 470R | 470 | ||
| R14 | 330K | 330k | ||
| Capacitors 5 | ||||
| C2 | 100n | 100n | ||
| C3 | 68n | 68n | ||
| C4 | 100u | 100u | Electrolytic capacitor | |
| C5 | 10u | 10u | Electrolytic capacitor | |
| C6 | 2u2 | 2.2u | Electrolytic capacitor | |
| Transistors 2 | ||||
| Q1-2 | MPSA18** | MPSA18 | ||
| Q3 | 2N2646 | 2N2646 | ||
| Potentiometers 3 | ||||
| DEPTH | 500KC | C500k | ||
| RATE | 100KC | C100k | ||
| VOL | 47-50K Trim | 47-50K TRIM | ||
Other boards based on the Vox Repeat Percussion
- FuzzPup Repeater Fuzz Dog · 1590A · £36.00