1590B · 2 knobs
From the vendor
This is the little brother of our ZiRCONiA, an optical compressor using VTL5C3 (or similar) that is based on the Diamond.
Featuring 1/8w resistors (or standing 1/4w) and a built-in charge pump for 18v operation, it fits into a 1590b enclosure.
The controls are:
VOLUME- Sets the output level.
EQ- This is a “tilt” style EQ that cuts bass as the treble is increased (CW) and conversely cuts treble as bass is increased (CCW). Set the control at noon for the same sound as EQ “off” on the ZiRCONiA.
COMP- Increases the amount of compression and sustain.
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 69 rows
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ocr read from an image · sch paired from the schematic · fixed corrected by hand. Check marked values against the build document.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 28 | ||||
| R1 | 100Rocr | 100 | ||
| R2 | 10kocr | 10k | ||
| R3 | 10kocr | 10k | ||
| R4 | 100Rocr | 100 | ||
| R5 | 15kocr | 15k | ||
| R9 | 15kocr | 15k | ||
| R10 | 47k5ocr | 47.5k | ||
| R11 | 47k5ocr | 47.5k | ||
| R13 | 100kocr | 100k | ||
| R15 | 1Mocr | 1M | ||
| R17 | 475kocr | 475k | ||
| R18 | 475kocr | 475k | ||
| R19 | 3k3ocr | 3.3k | ||
| R20 | 6k4ocr | 6.4k | ||
| R22 | 100Rocr | 100 | ||
| R23 | 475kocr | 475k | ||
| R24 | 22kocr | 22k | ||
| R25 | 100kocr | 100k | ||
| R26 | 1kocr | 1k | ||
| R27 | 3k3ocr | 3.3k | ||
| R28 | 475rocr | 475 | ||
| R29 | 220kocr | 220k | ||
| R30 | 475kocr | 475k | ||
| R31 | 100kocr | 100k | ||
| R32 | 220kocr | 220k | ||
| R33 | 10kocr | 10k | ||
| R34 | 470kocr | 470k | ||
| R38 | 10kocr | 10k | ||
| Capacitors 25 | ||||
| C1 | 10uocr | 10u | ||
| C2 | 220uocr | 220u | ||
| C3 | 47uocr | 47u | ||
| C4 | 5n6ocr | 5.6n | ||
| C5 | 5n6ocr | 5.6n | ||
| C6 | 330nocr | 330n | ||
| C7 | 100nocr | 100n | ||
| C8 | 100nocr | 100n | ||
| C9 | 100pocr | 100p | ||
| C10 | 100µFocr | 100u | ||
| C11 | 100pocr | 100p | ||
| C13 | 1uocr | 1u | ||
| C14 | 100pocr | 100p | ||
| C15 | 330nocr | 330n | ||
| C18 | 100nocr | 100n | ||
| C19 | 10nocr | 10n | ||
| C20 | 10nocr | 10n | ||
| C21 | 2u2ocr | 2.2u | ||
| C22 | 100nocr | 100n | ||
| C23 | 10uocr | 10u | ||
| C25 | 3n3ocr | 3.3n | ||
| C26 | 10nocr | 10n | ||
| C29 | 3n3ocr | 3.3n | ||
| C31 | 100nocr | 100n | ||
| C30 | 100nocr | 100n | ||
| Diodes 7 | ||||
| D1 | 1N4001ocr | 1N4001 | ||
| D2 | 1N5817ocr | 1N5817 | ||
| D3 | 1N5817ocr | 1N5817 | ||
| D5 | 1N4148ocr | 1N4148 | ||
| D6 | 1N4148ocr | 1N4148 | ||
| D7 | 1N4148ocr | 1N4148 | ||
| D8 | 1N4148ocr | 1N4148 | ||
| Transistors 4 | ||||
| Q3 | 2N3904ocr | 2N3904 | ||
| Q4 | 2N3904ocr | 2N3904 | ||
| Q5 | 2N3904ocr | 2N3904 | ||
| Q6 | 2N3904ocr | 2N3904 | ||
| ICs 3 | ||||
| IC1 | LM358ocr | LM358 | ||
| IC2 | OP275ocr | OP275 | ||
| IC5 | 1044SCPAocr | 1044SCPA | ||
| Potentiometers 2 | ||||
| COMP | 100KBocr | B100k | Potentiometer | |
| VOL | 100KAocr | A100k | Potentiometer | |