Enclosure not stated · 4 knobs
Blackout Effectors Whetstone PhaserVerified
Based on the Blackout Effectors Whetstone Phaser· 3 other boards clone it
From the post
" The vintage sound of an analog OTA-based phaser melded with contemporary parameters out the wazoo. From classic and not-so-classic sounds, subtle and over-the-top phase tones, mellow through seasick pitch vibrato, ringmod, glitchy octave effects, and outright strange phased/autowah/tremolo hybrid sounds you won't find anywhere else. No doubt the Whetstone can do things that your current phaser can't "
This was a request.
Original FSB thread and unverified schematic avilable here.
Update! The first link on the right of the bottom 13600 should go from the Base of 2N5087 to the Collector of the 2N5088.
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 40 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 14 | ||||
| ×13 | 27K | 27k | read from the layout by eye | |
| ×8 | 10K | 10k | read from the layout by eye | |
| ×5 | 1K | 1k | read from the layout by eye | |
| ×4 | 4K7 | 4.7k | read from the layout by eye | |
| ×3 | 15K | 15k | read from the layout by eye | |
| ×3 | 2M2 | 2.2M | read from the layout by eye | |
| ×2 | 22K | 22k | read from the layout by eye | |
| ×2 | 1K8 | 1.8k | read from the layout by eye | |
| ×1 | 3K3 | 3.3k | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| ×1 | 100R | 100 | read from the layout by eye | |
| ×1 | ? | ? | LED resistor, value not given; read from the layout by eye | |
| Capacitors 10 | ||||
| ×5 | 6n8 | 6.8n | read from the layout by eye | |
| ×4 | 100n | 100n | read from the layout by eye | |
| ×2 | 47n | 47n | read from the layout by eye | |
| ×1 | 220n | 220n | read from the layout by eye | |
| ×1 | 680p | 680p | read from the layout by eye | |
| ×3 | 22u | 22u | electrolytic; read from the layout by eye | |
| ×2 | 100u | 100u | electrolytic; read from the layout by eye | |
| ×1 | 33u | 33u | electrolytic; read from the layout by eye | |
| ×1 | 10u | 10u | electrolytic; read from the layout by eye | |
| ×1 | 1u | 1u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| D1 | 12V Zener | 12V | read from the layout by eye | |
| Transistors 3 | ||||
| ×3 | 2N5087 | 2N5087 | printed 5087; read from the layout by eye | |
| ×3 | 2N5088 | 2N5088 | printed 5088; read from the layout by eye | |
| ×1 | 2N7000 | 2N7000 | MOSFET; read from the layout by eye | |
| ICs 1 | ||||
| ×3 | LM13600 | LM13600 | printed 13600; read from the layout by eye | |
| Potentiometers 4 | ||||
| Feedback | B250K | B250k | Potentiometer | read from the layout by eye |
| Depth | B250K | B250k | Potentiometer | read from the layout by eye |
| Level | A100K | A100k | Potentiometer | read from the layout by eye |
| Rate | C1M | C1M | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×1 | 10K | 10k | read from the layout by eye | |
| Switches 6 | ||||
| Range | 3P4T rotary | 3P4T ROTARY | switch 1; read from the layout by eye | |
| Symmetry | DPDT | DPDT | switch 2; read from the layout by eye | |
| Vibrato | SPST | SPST | switch 3; read from the layout by eye | |
| Stages | DPDT | DPDT | switch 4; read from the layout by eye | |
| Sweep | SPDT | SPDT | switch 5; read from the layout by eye | |
| Filter | DPDT | DPDT | switch 6; read from the layout by eye | |
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