Enclosure not stated · 3 knobs
JMK PCBs· 007
Expandora
Based on the Bixonic Expandora· 4 other boards clone it
- Category
- Distortion
- Controls
- Level · Gain · Tone
- Difficulty
- Easy
- Price
- $12.00in stock
- Tags
- octave
From the vendor
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The Expandora is a clone of an out of production pedal, made most famous in it’s use by the guitarist from ZZ Top. This unique distortion device features standard Gain, Tone and Volume Knobs, along with an internal DIP switch for giving options between clean, overdrive, distortion, and insanity settings. Try it out if you’ve always wanted to play through an original, or because you like a challenge and want to try something new.
*Please note – early build docs have an incorrect value for a capacitor! The 33nF capacitor in the tone section should be a 3.3nF capacitor. Please change this if you can on older builds.*
(Rev 4.0.2)
(Rev 3.1)
Reviews
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Schematic
The schematic is in the vendor's build document. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 51 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 23 | ||||
| R1 | 2.2M | 2.2M | ||
| R9 | 1.1K | 1.1k | ||
| R17 | 51K | 51k | ||
| R2 | 100K | 100k | ||
| R10 | 1.1K | 1.1k | ||
| R18 | 100K | 100k | ||
| R3 | 2.2M | 2.2M | ||
| R11 | 1.5K | 1.5k | ||
| R19 | 10K | 10k | ||
| R4 | 2.2M | 2.2M | ||
| R12 | 1M | 1M | ||
| R20 | 10K | 10k | ||
| R5 | 43K | 43k | ||
| R13 | 1.1K | 1.1k | ||
| R21 | 4.7K | 4.7k | ||
| R6 | 560R | 560 | ||
| R14 | 47R | 47 | ||
| R22 | 4.7K | 4.7k | ||
| R7 | 47R | 47 | ||
| R15 | 4.7K | 4.7k | ||
| R23 | 47K | 47k | ||
| R8 | 560R | 560 | ||
| R16 | 820K | 820k | ||
| Capacitors 16 | ||||
| C1 | 100nF | 100n | ||
| C9 | 2.2uF | 2.2u | ||
| C2 | 33pF | 33p | ||
| C10 | 4.7uF | 4.7u | ||
| C3 | 1uF | 1u | ||
| C11 | 3.3nF | 3.3n | ||
| C4 | 22nF | 22n | ||
| C12 | 100nF | 100n | ||
| C5 | 1nF | 1n | ||
| C13 | 1uF | 1u | ||
| C6 | 33pF | 33p | ||
| C14 | 100nF | 100n | ||
| C7 | 100pF | 100p | ||
| C15 | 100uF | 100u | ||
| C8 | 4.7uF | 4.7u | ||
| C16 | 100uF | 100u | ||
| Diodes 4 | ||||
| D1 | 1n4148 | 1N4148 | ||
| D2 | 1n4148 | 1N4148 | ||
| D3 | 1n4148 | 1N4148 | ||
| D4 | 1N4001 | 1N4001 | ||
| Transistors 1 | ||||
| Q1 | 2N3906 | 2N3906 | ||
| ICs 3 | ||||
| IC1 | LM308N | LM308N | ||
| IC2 | LM308N | LM308N | ||
| IC3 | JRC4558 | JRC4558 | ||
| Potentiometers 3 | ||||
| LEVEL | B1M | B1M | Potentiometer | |
| GAIN | B1M | B1M | Potentiometer | |
| TONE | C100K | C100k | Potentiometer | |
| Switches 1 | ||||
| SW1 | DIP | DIP | ||
Other boards based on the Bixonic Expandora
- Dynamo Aion FX · 125B · $12.50
- Dragonbeard Jr Madbean · 1590B · $10.00
- Bionic Pandora PCB Guitar Mania · 125B · €11.90
- Pandora’s Box PedalPCB · 125B · $10.00