125B · 2 knobs
FAT32 Dynamic Filter
Based on the BOSS FT-2
- Category
- EQ / Filter
- Controls
- Sens · Frq
- Price
- $14.99out of stock
From the vendor
Compare to BOSS FT-2 from the mid 80’s, using the obsolete dual VCA M5207L01 chip. Dual stacked PCBs, meant to fit inside the 125B enclosure. Comes with 1mm spaced M3 nylon washers, and color-matched mini 3pdt pcb (if available). Link to mini 3pdt pcb.
This can be built with only the “up” or “down” options, or with a rotary offering an additional “manual” setting that allows cocked wah sounds and/or an expression pedal out via a stereo jack.
Can be purchased as pcb set (both pcb’s with mini 3pdt pcb), or the very same bundled with a tested M5207L01 chip.
Much more info in the document below.
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 85 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 49 | ||||
| R36 | 10k | 10k | ||
| R1 | 1M | 1M | ||
| R37 | 10k | 10k | ||
| R2 | 10k | 10k | ||
| R38 | 10k | 10k | ||
| R3 | 10k | 10k | ||
| R39 | 10k | 10k | ||
| R4 | 10k | 10k | ||
| R40 | 22k | 22k | ||
| R5 | 10k | 10k | ||
| R41 | 4k7 | 4.7k | ||
| R6 | 47k | 47k | ||
| R42 | 1k | 1k | ||
| R7 | 47k | 47k | ||
| R43 | 4k7 | 4.7k | ||
| R8 | 10k | 10k | ||
| R44 | 10k | 10k | ||
| R9 | 10k | 10k | ||
| R45 | 15k | 15k | ||
| R10 | 10k | 10k | ||
| R46 | 47k | 47k | ||
| R11 | 10k | 10k | ||
| R47 | 22k | 22k | ||
| R12 | 12k | 12k | ||
| R48 | 47k | 47k | ||
| R13 | 47k | 47k | ||
| R49 | 3k3 | 3.3k | ||
| R14 | 47k | 47k | ||
| R15 | 10k | 10k | ||
| R16 | 47k | 47k | ||
| R17 | 47k | 47k | ||
| R18 | 47k | 47k | ||
| R19 | 100k | 100k | ||
| R20 | 1M | 1M | ||
| R21 | 10k | 10k | ||
| R22 | 1k | 1k | ||
| R23 | 2k2 | 2.2k | ||
| R24 | 47k | 47k | ||
| R25 | 1M | 1M | ||
| R26 | 22k | 22k | ||
| R27 | 10k | 10k | ||
| R28 | 12k | 12k | ||
| R29 | 4k7 | 4.7k | ||
| R30 | 10k | 10k | ||
| R31 | 10k | 10k | ||
| R32 | 20k | 20k | ||
| R33 | 10k | 10k | ||
| R34 | 47k | 47k | ||
| R35 | 10k | 10k | ||
| Capacitors 20 | ||||
| C1 | 22n | 22n | ||
| C2 | 47u | 47u | ||
| C3 | 10u | 10u | ||
| C4 | 6n8 | 6.8n | ||
| C5 | 10u | 10u | ||
| C6 | 1u | 1u | ||
| C7 | 6n8 | 6.8n | ||
| C8 | 1n5 | 1.5n | ||
| C9 | 1n5 | 1.5n | ||
| C10 | 1u | 1u | ||
| C11 | 10u | 10u | ||
| C12 | 4n7 | 4.7n | ||
| C13 | 100p | 100p | ||
| C14 | 10p | 10p | ||
| C15 | 100p | 100p | ||
| C16 | 2u2 | 2.2u | ||
| C17 | 10u | 10u | ||
| C18 | 220n | 220n | ||
| C21 | 100u | 100u | ||
| C22 | 47u | 47u | ||
| Diodes 6 | ||||
| D1 | 1n4148 | 1N4148 | ||
| D2 | 1n4148 | 1N4148 | ||
| D3 | 1n4148 | 1N4148 | ||
| D4 | 1n4148 | 1N4148 | ||
| D5 | 1n4148 | 1N4148 | ||
| D6 | 1n5817 | 1N5817 | ||
| Transistors 2 | ||||
| Q1 | 2N5457 | 2N5457 | ||
| Q2 | 2N5088 | 2N5088 | ||
| ICs 6 | ||||
| IC1 | M5207L01 | M5207L01 | ||
| IC2 | NJM2904 | NJM2904 | ||
| IC3 | NJM4580 | NJM4580 | ||
| IC4 | NJM2904 | NJM2904 | ||
| IC5 | NJM2904 | NJM2904 | ||
| IC6 | NJM4580 | NJM4580 | ||
| Potentiometers 2 | ||||
| SENS | 250KB | B250k | Potentiometer | |
| FRQ | 50KB | B50k | Potentiometer | |