Enclosure not stated · 5 knobs
Bogner La GrangeVerified
Based on the Bogner La Grange· 1 other board clones it
From the post
Original Info:
The La Grange pedal is designed to emulate the famous British "Plexi" amplifiers from the mid 60's. The wide variety of controls and switches, give you decades of legendary plexi tones, all the way up to the era of the modded amps from the late 80's and throughout the 90's.
An independent boost function, with a level control, can be activated via it's own foot-switch to be either used as a stand alone boost, or together with the La Grange's main circuitry. Essentially two independent pedals, with the boost being in series after the La Grange!
Reinhold designed the La Grange pedal with an op-amp input, followed by five discrete Class A gain stages and incorporated Germanium diode clipping. This approach minimizes the input noise floor while retaining touch sensitivity and clarity throughout the entire gain range.
Original FSB thread and schematic available here.
You can find the original manual PDF here.
I've used Mark's Dual Effect Offboard wiring.
21/11/2017 Layout Updated! Fixed Boost section based on updated schematic.
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 62 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 3 values the reader of this layout was not sure of
- 53R left of centre in the lower half (next to the D1 LED): printed clearly, unusual value
- 8M2 in the group of four resistors left of the OPA132: printed clearly, unusual value
- Transistor types: the labels 'BS170' and '2n5088' run together above the top edge; read as BS170 for the top DGS part and 2N5088 for the CBE part below it
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 20 | ||||
| ×2 | ? | ? | LED resistor, value not given; read from the layout by eye | |
| ×2 | 47R | 47 | read from the layout by eye | |
| ×1 | 53R | 53 | read from the layout by eye | |
| ×1 | 100R | 100 | read from the layout by eye | |
| ×1 | 330R | 330 | read from the layout by eye | |
| ×1 | 390R | 390 | read from the layout by eye | |
| ×2 | 1K | 1k | read from the layout by eye | |
| ×1 | 3K3 | 3.3k | read from the layout by eye | |
| ×6 | 5K1 | 5.1k | read from the layout by eye | |
| ×4 | 10K | 10k | read from the layout by eye | |
| ×1 | 15K | 15k | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| ×2 | 47K | 47k | read from the layout by eye | |
| ×1 | 68K | 68k | read from the layout by eye | |
| ×1 | 82K | 82k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| ×9 | 1M | 1M | read from the layout by eye | |
| ×3 | 2M2 | 2.2M | read from the layout by eye | |
| ×1 | 8M2 | 8.2M | read from the layout by eye | |
| Capacitors 16 | ||||
| ×1 | 22p | 22p | read from the layout by eye | |
| ×1 | 100p | 100p | read from the layout by eye | |
| ×1 | 150p | 150p | read from the layout by eye | |
| ×1 | 470p | 470p | read from the layout by eye | |
| ×2 | 2n2 | 2.2n | read from the layout by eye | |
| ×1 | 10n | 10n | read from the layout by eye | |
| ×5 | 22n | 22n | read from the layout by eye | |
| ×1 | 47n | 47n | read from the layout by eye | |
| ×5 | 100n | 100n | read from the layout by eye | |
| ×2 | 470n | 470n | read from the layout by eye | |
| ×1 | 1u | 1u | film box; read from the layout by eye | |
| ×1 | 4u7 | 4.7u | electrolytic; read from the layout by eye | |
| ×4 | 10u | 10u | electrolytic; read from the layout by eye | |
| ×2 | 33u | 33u | electrolytic; read from the layout by eye | |
| ×2 | 47u | 47u | electrolytic; read from the layout by eye | |
| ×1 | 100u | 100u | electrolytic; read from the layout by eye | |
| Diodes 9 | ||||
| D3 | 10V Zener | 10V | read from the layout by eye | |
| D4 | 10V Zener | 10V | read from the layout by eye | |
| D5 | 10V Zener | 10V | read from the layout by eye | |
| D6 | 12V Zener | 12V | read from the layout by eye | |
| D7 | 1N5817 | 1N5817 | read from the layout by eye | |
| D8 | 1N5817 | 1N5817 | read from the layout by eye | |
| D9 | 1N5817 | 1N5817 | read from the layout by eye | |
| D10 | 1N270 | 1N270 | legend: Ge (1n270); read from the layout by eye | |
| D11 | 1N270 | 1N270 | legend: Ge (1n270); read from the layout by eye | |
| Transistors 3 | ||||
| ×4 | BS170 | BS170 | MOSFET; read from the layout by eye | |
| ×2 | 2N7000 | 2N7000 | MOSFET; read from the layout by eye | |
| ×1 | 2N5088 | 2N5088 | read from the layout by eye | |
| ICs 2 | ||||
| ×2 | 7660S | 7660S | charge pump; read from the layout by eye | |
| ×1 | OPA132 | OPA132 | read from the layout by eye | |
| Potentiometers 5 | ||||
| Volume | A100K | A100k | Potentiometer | read from the layout by eye |
| Ch. Blend | B1K | B1k | Potentiometer | read from the layout by eye |
| Tone | B100K | B100k | Potentiometer | read from the layout by eye |
| Boost | C25K | C25k | Potentiometer | read from the layout by eye |
| Gain | B25K | B25k | Potentiometer | read from the layout by eye |
| Switches 5 | ||||
| Structure | SPDT on/off/on | SPDT ON/OFF/ON | Switch 1, toggle; read from the layout by eye | |
| Gain | SPDT on/off/on | SPDT ON/OFF/ON | Switch 2, toggle; read from the layout by eye | |
| Presence | SPST | SPST | Switch 3, toggle; read from the layout by eye | |
| Variac | SPDT | SPDT | Switch 4, toggle; read from the layout by eye | |
| Boost | 3PDT | 3PDT | Switch 5, footswitch; read from the layout by eye | |
| LEDs 2 | ||||
| D1 | 5mm diffused red LED | 5MM DIFFUSED RED LED | on board; read from the layout by eye | |
| D2 | 5mm diffused red LED | 5MM DIFFUSED RED LED | on board; read from the layout by eye | |
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