Enclosure not stated · 3 knobs
JHS Morning GloryVerified
Based on the JHS Morning Glory· 6 other boards clone it
From the post
The JHS Morning Glory is a modified Blues Breaker overdrive, but with an added JFET output buffer to increase the volume. The original Marshall circuits barely made it above unity with the volume maxed (see the video below), so the output buffer is a good improvement over the original. There's also a high cut switch to help tame single coils a bit. I wasn't quite able to get the on-board pots to be in the exact layout as the JHS units (the Tone control and High Cut switch are reversed), but it's close enough. You should be able to board mount the SPST high cut switch as well.
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 Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.
Parts list 29 rows
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Check before you build · 1 value the reader of this layout was not sure of
- Switch '1-Sw-2' at the left edge: two wires only, entered as SPST; the drawing does not name the switch type
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 13 | ||||
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 3.3K | 3.3k | read from the layout by eye | |
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| ×2 | 6.8K | 6.8k | read from the layout by eye | |
| ×1 | 10K | 10k | read from the layout by eye | |
| ×2 | 12K | 12k | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| ×2 | 47K | 47k | read from the layout by eye | |
| ×1 | 68K | 68k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 220K | 220k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| ×1 | 2.2M | 2.2M | read from the layout by eye | |
| Capacitors 8 | ||||
| ×1 | 47pF | 47p | read from the layout by eye | |
| ×1 | 470pF | 470p | read from the layout by eye | |
| ×4 | 10nF | 10n | read from the layout by eye | |
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×4 | 100nF | 100n | read from the layout by eye | |
| ×1 | 2.2uF | 2.2u | electrolytic; read from the layout by eye | |
| ×2 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×2 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×4 | 1N4148 | 1N4148 | D1-D4; read from the layout by eye | |
| ×1 | 1N4001 | 1N4001 | read from the layout by eye | |
| Transistors 1 | ||||
| Q1 | 2N5457 | 2N5457 | JFET; read from the layout by eye | |
| ICs 1 | ||||
| IC1 | LM833N | LM833N | read from the layout by eye | |
| Potentiometers 3 | ||||
| Drive | B100K | B100k | Potentiometer | read from the layout by eye |
| Tone | B25K | B25k | Potentiometer | read from the layout by eye |
| Volume | A100K | A100k | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| Sw | SPST | SPST | toggle, two wires (1-Sw-2); type not stated; read from the layout by eye | |
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