Enclosure not stated · 4 knobs
Dunlop Dunlop GBC-95 Modded CrybabyVerified
Based on the Dunlop GCB-95 Cry Baby· 6 other boards clone it
- Category
- Wah / Envelope
- Build
- Vero· 21×12· 12 cuts, 6 links
- Layout
- Verified · Tagboard Effects marks it as built and working
- Tags
- Dunlop, Wah
From the post
For those that are just never satisfied by whats out there in the land of wahs I took the standard Dunlop GBC-95 Crybaby and added some features based on common mod points. So how's this supposed to work?
Voice Pot: Changes the voice of the the wah by changing the sharpness and making it more "vocal." The larger the value the more "vocal" the wah sounds.
Gain Pot: Really this controls the overall bass and gain of the wah. The lower the value the more growl and bass you'll get.
Sweep Switch (SW): This controls the sweep range of the wah. The larger the cap the more bass sweep you'll get. For instance the common value is 10nF, which i put on the board already, and the bass wah has a 68nF. Personally if I were making this I would start with the stock value and increase using values I liked up to the bass value, but hey, that's just me.
Sweep Pot: This will control the range of the week of the wah pot. No different then what you find on the Dimeback or Cantrell Wah.
R1: This will set the volume of the wah, the smaller the value the more volume you'll get. Typically it's 68k. So you can mess around with it and get as much or as little volume as you liked.
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 29 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 2 values the reader of this layout was not sure of
- R1 (main board, between Q1 and Q2): only the designator is printed, no value
- C2, C3, C4, C5, C6 on the sweep board: only designators are printed, no values
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 9 | ||||
| ×2 | 1k | 1k | read from the layout by eye | |
| ×1 | 1.5k | 1.5k | read from the layout by eye | |
| ×2 | 10k | 10k | read from the layout by eye | |
| ×1 | 22k | 22k | read from the layout by eye | |
| ×1 | 82k | 82k | read from the layout by eye | |
| ×2 | 470k | 470k | read from the layout by eye | |
| ×1 | 1.8M | 1.8M | read from the layout by eye | |
| ×1 | 2.2M | 2.2M | read from the layout by eye | |
| R1 | ? | ? | value not printed; read from the layout by eye | |
| Capacitors 11 | ||||
| ×1 | 22pF | 22p | read from the layout by eye | |
| ×3 | 10nF | 10n | two on the main board, one on the sweep board; read from the layout by eye | |
| ×1 | 100nF | 100n | read from the layout by eye | |
| ×2 | 220nF | 220n | read from the layout by eye | |
| ×1 | 4.7uF | 4.7u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| C2 | ? | ? | sweep board, value not printed; read from the layout by eye | |
| C3 | ? | ? | sweep board, value not printed; read from the layout by eye | |
| C4 | ? | ? | sweep board, value not printed; read from the layout by eye | |
| C5 | ? | ? | sweep board, value not printed; read from the layout by eye | |
| C6 | ? | ? | sweep board, value not printed; read from the layout by eye | |
| Transistors 3 | ||||
| Q1 | MPSA13 | MPSA13 | read from the layout by eye | |
| Q2 | MPSA18 | MPSA18 | read from the layout by eye | |
| Q3 | MPSA18 | MPSA18 | read from the layout by eye | |
| Inductors 1 | ||||
| ×1 | ? | ? | labelled 'Inductor', value not printed; read from the layout by eye | |
| Potentiometers 4 | ||||
| Wah | 100K | 100k | Potentiometer | taper not stated; read from the layout by eye |
| Sweep | B5K | B5k | Potentiometer | read from the layout by eye |
| Gain | B1K | B1k | Potentiometer | read from the layout by eye |
| Voice | B100K | B100k | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| SW | 2P6T | 2P6T | rotary, 2 pole 6 position; read from the layout by eye | |
Other boards based on the Dunlop GCB-95 Cry Baby
- Dunlop GCB-95 Cry Baby EfektPol
- Dunlop GCB-95 Cry Baby Effects Layouts (blog)
- Dunlop Crybaby Experimentalists Anonymous
- Dunlop Crybaby 95 Experimentalists Anonymous
- Dunlop Original Crybaby Experimentalists Anonymous
- Jim Dunlop CryBaby GCB-95 Tagboard Effects