Enclosure not stated · 2 knobs
Schematic
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Parts list 41 rows
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Check before you build · 2 values the reader of this schematic was not sure of
- second phaser parts inferred from the 'similar circuit, C=15nF' box, not drawn
- 4558 count inferred from the number of op-amp sections
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 20 | ||||
| ×3 | 1k | 1k | phaser 1 input, phaser 2 input, depth 2 output; read from the schematic by eye | |
| ×4 | 22k | 22k | phaser 1 FET bias; read from the schematic by eye | |
| ×8 | 10k | 10k | phaser 1 all-pass stages; read from the schematic by eye | |
| ×1 | 22k | 22k | phaser 1 feedback around stages 2-4; read from the schematic by eye | |
| ×1 | 10k | 10k | input; read from the schematic by eye | |
| ×1 | 680k | 680k | input bias; read from the schematic by eye | |
| ×1 | 150k | 150k | LFO; read from the schematic by eye | |
| ×1 | 470k | 470k | LFO; read from the schematic by eye | |
| ×1 | 10k | 10k | LFO, in series with Speed; read from the schematic by eye | |
| ×1 | 100k | 100k | LFO; read from the schematic by eye | |
| ×1 | 3M9 | 3.9M | LFO; read from the schematic by eye | |
| ×1 | 1M | 1M | LFO trim feed; read from the schematic by eye | |
| ×1 | 22k | 22k | depth 1 output; read from the schematic by eye | |
| ×2 | 47k | 47k | mixer inputs; read from the schematic by eye | |
| ×2 | 100k | 100k | mixer dry input and output pulldown; read from the schematic by eye | |
| ×1 | 68k | 68k | mixer feedback; read from the schematic by eye | |
| ×1 | 22k | 22k | mixer + input to ground; read from the schematic by eye | |
| ×4 | 22k | 22k | second phaser, implied by the box 'similar circuit as above but C=15nF'; read from the schematic by eye | |
| ×8 | 10k | 10k | second phaser, implied by the box 'similar circuit as above but C=15nF'; read from the schematic by eye | |
| ×1 | 22k | 22k | second phaser, implied by the box 'similar circuit as above but C=15nF'; feedback; read from the schematic by eye | |
| Capacitors 10 | ||||
| ×1 | 0.1uF | 100n | supply bypass; read from the schematic by eye | |
| ×4 | 47nF | 47n | phaser 1 stage caps (marked C); read from the schematic by eye | |
| ×3 | 100pF | 100p | phaser 1; read from the schematic by eye | |
| ×1 | 10nF | 10n | LFO; read from the schematic by eye | |
| ×1 | 10uF | 10u | LFO, electrolytic; read from the schematic by eye | |
| ×1 | 0.1uF | 100n | input; read from the schematic by eye | |
| ×2 | 0.22uF | 220n | depth 1 and output; read from the schematic by eye | |
| ×1 | 1uF | 1u | depth 2; read from the schematic by eye | |
| ×4 | 15nF | 15n | second phaser, implied by the box 'similar circuit as above but C=15nF'; stage caps; read from the schematic by eye | |
| ×3 | 100pF | 100p | second phaser, implied by the box 'similar circuit as above but C=15nF'; read from the schematic by eye | |
| Transistors 2 | ||||
| ×4 | BF245A | BF245A | JFETs for phaser 1, matched with the drawn current-source test; read from the schematic by eye | |
| ×4 | BF245A | BF245A | second phaser, implied by the box 'similar circuit as above but C=15nF'; read from the schematic by eye | |
| ICs 3 | ||||
| ×3 | 4558 | 4558 | dual op amp: four phaser 1 stages, input buffer, output mixer (six sections); read from the schematic by eye | |
| ×2 | 4558 | 4558 | second phaser, implied by the box 'similar circuit as above but C=15nF'; four sections; read from the schematic by eye | |
| ×1 | 741 | 741 | LFO; read from the schematic by eye | |
| Potentiometers 3 | ||||
| Speed | B500k | B500k | Potentiometer | drawn 500k LIN; read from the schematic by eye |
| Depth | B100k | B100k | Potentiometer | drawn 100k LIN, phaser 1; read from the schematic by eye |
| Depth | B100k | B100k | Potentiometer | drawn 100k LIN, phaser 2; read from the schematic by eye |
| Trimmers 1 | ||||
| Trim | 250k | 250k | LFO offset; read from the schematic by eye | |
| Switches 2 | ||||
| On/Off | SPST | SPST | phaser 1 on/off, shunts depth output to ground; read from the schematic by eye | |
| On/Off | SPST | SPST | phaser 2 on/off; read from the schematic by eye | |