Enclosure not stated · 4 knobs
Vemuram Jan RayVerified
Based on the Vemuram Jan Ray· 6 other boards clone it
From the post
Info about the "original" modified Timmy:
A firm natural overdrive with a pleasant silky sustain. An easy to handle overdrive with great sustain without any unnatural compression. It keeps the characteristics of the tones that the guitars naturally produce. The Jan Ray reproduces that great sustaining punchy clear tones of the blackface Fender amps from the 60's. The tone is crispy yet the low is warm and mellow.
And it only costs £300 here in the UK for a blatant rip off! Bargain! And so I strongly suggest anyone considering buying one gets themselves a Timmy instead or makes their own.
[Update 17th July 2014]
I like the compressed setting on the Timmy and so have added an updated layout which includes an additional switch to choose between compressed and uncompressed symmetrical clipping.
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 23 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 1 value the reader of this layout was not sure of
- 9K1 x2 (left of the IC and right of it): printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 7 | ||||
| ×1 | 100R | 100 | read from the layout by eye | |
| ×1 | 680R | 680 | read from the layout by eye | |
| ×1 | 1K2 | 1.2k | read from the layout by eye | |
| ×3 | 3K3 | 3.3k | read from the layout by eye | |
| ×1 | 7K5 | 7.5k | read from the layout by eye | |
| ×2 | 9K1 | 9.1k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| Capacitors 8 | ||||
| ×1 | 22p | 22p | read from the layout by eye | |
| ×1 | 47p | 47p | read from the layout by eye | |
| ×1 | 150p | 150p | read from the layout by eye | |
| ×1 | 39n | 39n | read from the layout by eye | |
| ×2 | 47n | 47n | read from the layout by eye | |
| ×1 | 100n | 100n | read from the layout by eye | |
| ×2 | 1u | 1u | read from the layout by eye | |
| ×2 | 47u | 47u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| ×5 | 1N4148 | 1N4148 | D1, D2, D5 on the board; D3, D4 on the clipping switch; read from the layout by eye | |
| ICs 1 | ||||
| IC | LM1458 | LM1458 | read from the layout by eye | |
| Potentiometers 4 | ||||
| Gain | B500K | B500k | Potentiometer | read from the layout by eye |
| Bass | B50K | B50k | Potentiometer | read from the layout by eye |
| Treble | B10K | B10k | Potentiometer | read from the layout by eye |
| Volume | B10K | B10k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×1 | 10K | 10k | read from the layout by eye | |
| Switches 1 | ||||
| Clipping | DPDT on/on | DPDT ON/ON | toggle; read from the layout by eye | |
Other boards based on the Vemuram Jan Ray
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- Vemuram Jan Ray Effects Layouts (blog)
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