Enclosure not stated · 2 knobs
Univox SQ-150 Square WaveVerified
Based on the Univox SQ-150 Square Wave· 4 other boards clone it
- Category
- Fuzz
- Controls
- Distortion · Balance
- Build
- Vero· 16×9· 6 cuts, 2 links
- Layout
- Verified · Tagboard Effects marks it as built and working
- Tags
- Fuzz, Univox
From the post
And a little clip with a small cap to tame the squeels and a LPB-1 with a trimmer at the output to fix the level issue.
Your browser does not support this audio
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 19 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 8 | ||||
| ×2 | 100K | 100k | read from the layout by eye | |
| ×2 | 560K | 560k | read from the layout by eye | |
| ×2 | 10K | 10k | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| ×1 | 270K | 270k | read from the layout by eye | |
| ×1 | 3.9K | 3.9k | read from the layout by eye | |
| ×1 | 680Ω | 680 | read from the layout by eye | |
| ×1 | 2M | 2M | read from the layout by eye | |
| Capacitors 5 | ||||
| ×1 | 100nF | 100n | read from the layout by eye | |
| ×1 | 1nF | 1n | read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×1 | 33uF | 33u | electrolytic; read from the layout by eye | |
| ×1 | 4.7uF | 4.7u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| D1 | 1N34A | 1N34A | D1-D2 were Ge (try 1N34A); read from the layout by eye | |
| D2 | 1N34A | 1N34A | D1-D2 were Ge (try 1N34A); read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | BC550C | BC550C | was 2SC1312G (try BC550C); read from the layout by eye | |
| Q2 | 2N5457 | 2N5457 | JFET; was 2SK34C (try 2N5457); read from the layout by eye | |
| Potentiometers 2 | ||||
| Distortion | B250K | B250k | Potentiometer | read from the layout by eye |
| Balance | A50K | A50k | Potentiometer | read from the layout by eye |
Other boards based on the Univox SQ-150 Square Wave
- Shin Ei / Univox SQ-150 Square Wave Dirtbox Layouts
- Univox SquareWave Effects Layouts (blog) · 1590A
- Univox Square Wave Fuzz Fuzz Dog · 1590B · £25.20
- Pulse Wave Fuzz PedalPCB · 125B · $8.00