Enclosure not stated · 1 knob
Tycobrahe Parapedal ModifiedVerified
Based on the Tycobrahe Parapedal Modified
- Category
- Wah / Envelope
- Controls
- Wah
- Build
- Vero· 16×17· 13 cuts, 9 links
- Layout
- Verified · Tagboard Effects marks it as built and working
- Tags
- Tycobrahe, Wah
From the post
I saw a request for this effect, and strangely enough I have been looking at making one of these of awhile. Not a whole lot of info on this out there, but here's what I found on the Chicago Iron site about there clone of it.
The Tycobrahe Parapedal was unique in that it used two pots to create it's own incredible wah type sound. The Parapedal was made in the mid seventies by Tycobrahe Engineering and has become quite a collectors item, that is - if you can find one. They were made in such small quantities that their value has sky-rocketed. Ask any vintage effect dealer for one(if they can find one).
What I do know is that Geezer Butler and Tony Iommi both used one, and that's enough of a reason for me to build one. Just listen to N.I.B. and you'll hear it on Geezer's bass solo intro.
Original was Positive Ground:
I also made the few changes to make it Negative Ground so you can daisy chain it:
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 18 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
- 650k at the top of column E: printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 9 | ||||
| ×3 | 220r | 220 | read from the layout by eye | |
| ×2 | 1k | 1k | read from the layout by eye | |
| ×3 | 10k | 10k | read from the layout by eye | |
| ×1 | 16k | 16k | read from the layout by eye | |
| ×1 | 22k | 22k | read from the layout by eye | |
| ×1 | 47k | 47k | read from the layout by eye | |
| ×1 | 100k | 100k | read from the layout by eye | |
| ×1 | 650k | 650k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| Capacitors 5 | ||||
| ×1 | 1nF | 1n | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×2 | 68nF | 68n | read from the layout by eye | |
| ×1 | 100nF | 100n | read from the layout by eye | |
| ×2 | 33uF | 33u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| D1 | 1N270 | 1N270 | read from the layout by eye | |
| ICs 2 | ||||
| IC1 | MC1458 | MC1458 | read from the layout by eye | |
| IC2 | MC1458 | MC1458 | read from the layout by eye | |
| Potentiometers 1 | ||||
| Wah | A10K | A10k | Potentiometer | dual; read from the layout by eye |