125B · 5 knobs
From the vendor
Overview
Are you looking for that Sweet Dee sound? Not a tall squawking bird but the legendary, over the top priced amps that break up wonderfully to match your guitar face. This thing has it and more. With controls to dial in the midrange frequencies and a three way toggle for varying levels of clipping, you can get the tone you want without selling your house.
Controls
• Volume – Controls the overall output volume
• Gain – Controls amount of distortion
• Tone – Controls the post-gain high frequencies
• Bass – Controls the pre-gain bass frequencies
• Voice (Toggle) – Toggles between Smooth / Open / Crunch voicing
Details
• Designed for a 125B enclosure with top-mounted jacks
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 41 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 16 | ||||
| R1 | 1M | 1M | ||
| R2 | 470K | 470k | ||
| R3 | 100K | 100k | ||
| R4 | 100K | 100k | ||
| R5 | 47K | 47k | ||
| R6 | 10K | 10k | ||
| R7 | 100K | 100k | ||
| R8 | 100K | 100k | ||
| R9 | 1K | 1k | ||
| R10 | 47K | 47k | ||
| R11 | 33K | 33k | ||
| R12 | 1K | 1k | ||
| R13 | 100K | 100k | ||
| R14 | 100K | 100k | ||
| R15 | 470K | 470k | ||
| R100 | 4K7 | 4.7k | ||
| Capacitors 13 | ||||
| C1 | 100p | 100p | ||
| C2 | 22n | 22n | ||
| C3 | 10u | 10u | ||
| C4 | 100p | 100p | ||
| C5 | 10u | 10u | ||
| C6 | 47n | 47n | ||
| C7 | 2u2 | 2.2u | ||
| C8 | 100p | 100p | ||
| C9 | 2u2 | 2.2u | ||
| C10 | 1u | 1u | ||
| C11 | 22n | 22n | ||
| C12 | 10u | 10u | ||
| C100 | 100u | 100u | ||
| Diodes 7 | ||||
| D1 | 1N4148 | 1N4148 | ||
| D2 | 1N4148 | 1N4148 | ||
| D3 | 1N4148 | 1N4148 | ||
| D4 | 1N4148 | 1N4148 | ||
| D5 | 1N4148 | 1N4148 | ||
| D6 | 1N4148 | 1N4148 | ||
| D100 | 1N5817 | 1N5817 | ||
| ICs 1 | ||||
| IC1 | MC1458P | MC1458P | ||
| Potentiometers 4 | ||||
| VOLUME | A100K | A100k | Potentiometer | |
| TONE | B25K | B25k | Potentiometer | |
| BASS | C10K | C10k | Potentiometer | |
| GAIN | A1M | A1M | Potentiometer | |
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