125B · 9 knobs
Radium Springs
From the vendor
The Radium Springs Reverb emulates the sound of a vintage spring reverb unit.
This project includes the required Pythagoras PCB and pre-programmed EEPROM.
Spin FV-1 IC sold separately.
Modes
• Reverb – Standard drippy wet spring reverb
• Blackface – Spring reverb with throbbing tremolo
• Brownface – Spring reverb with swirling harmonic tremolo
Controls
• Reverb Mode – Reverb Dwell, Bass, Treble
• Blackface Mode – Reverb Dwell, Tremolo Rate, Tremolo Intensity
• Brownface Mode – Reverb Dwell, Tremolo Rate, Tremolo Intensity
• Mode (Toggle switch) – Selects the reverb mode
• Volume – Controls the overall output volume
• Mix – Controls the wet/dry mix
Details
• Designed for a 125B enclosure with top-mounted jacks
• Powered by the PedalPCB Pythagoras MultiFX Platform
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 49 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 20 | ||||
| R1 | 1M | 1M | ||
| R2 | 1M | 1M | ||
| R3 | 1K | 1k | ||
| R4 | 15K | 15k | ||
| R5 | 10K | 10k | ||
| R6 | 100K | 100k | ||
| R7 | 10K | 10k | ||
| R8 | 100R | 100 | ||
| R9 | 15K | 15k | ||
| R10 | 15K | 15k | ||
| R11 | 22K | 22k | ||
| R12 | 100R | 100 | ||
| R13 | 4K7 | 4.7k | ||
| R14 | 10K | 10k | ||
| R15 | 10K | 10k | ||
| R16 | 10K | 10k | ||
| R17 | 1K | 1k | ||
| R18 | 15K | 15k | ||
| R19 | 15K | 15k | ||
| R20 | 100K | 100k | ||
| Capacitors 16 | ||||
| C1 | 100n | 100n | ||
| C2 | 1u | 1u | ||
| C3 | 1u | 1u | ||
| C4 | 1n | 1n | ||
| C5 | 10u | 10u | ||
| C6 | 1u | 1u | ||
| C7 | 15p | 15p | ||
| C8 | 1u | 1u | ||
| C9 | 1u | 1u | ||
| C10 | 1u | 1u | ||
| C11 | 2n2 | 2.2n | ||
| C12 | 220p | 220p | ||
| C13 | 470p | 470p | ||
| C14 | 100u | 100u | ||
| C15 | 47u | 47u | ||
| C16 | 47u | 47u | ||
| Diodes 1 | ||||
| D1 | 1N5817 | 1N5817 | ||
| ICs 5 | ||||
| IC1 | TL072 | TL072 | ||
| IC2 | 24LC32A | 24LC32A | ||
| IC3 | FV1 | FV1 | ||
| IC4 | L78L33 | L78L33 | ||
| IC5 | TL072 | TL072 | ||
| Crystals 1 | ||||
| X1 | AB38T-32.768KHZ | AB38T-32.768KHZ | ||
| Potentiometers 5 | ||||
| CTRL1 | B100K | B100k | Potentiometer | |
| CTRL2 | B100K | B100k | Potentiometer | |
| CTRL3 | B100K | B100k | Potentiometer | |
| MIX | B10K | B10k | Potentiometer | |
| VOLUME | B100K | B100k | Potentiometer | |
| Switches 1 | ||||
| SW1 | SPDT | SPDT | ||