1590B · 5 knobs
Fuzz Dog· MegaWatt
MegaHIWatt - Vintage HIWATT Amp Tone
Based on the WiiO / RAH
- Category
- Overdrive· OD/Dist/Preamp
- Controls
- Gain · Master · Treble · Bass · Mids
- Difficulty
- Medium
- Price
- £38.40
- Tags
- od-distortion
From the vendor
One PCB, two different circuits based on 70s Hiwatt amp tones. Shape your sound into something close to two classics: • NORTH - based on Pete Townsend's sound on The Who - Live at Leeds. • SOUTH - Page's sound from Led Zeppelin at the Royal Albert Hall, 1970 Either can be made on the same PCB (though not both at once - sorry!) NORTH is simpler in both construction and tone shaping, having Vol, Gain, Bass and Treble. The tone controls are highly interactive. SOUTH adds a Mids control, which adds more interaction into the tone stack mix. Both versions are very responsive to playing dynamics. The kit is supplied with vertical-mount pots which have round shafts, so you'll need set-screw fitting knobs. If you want the PCB without parts there's a link for that at the bottom of the page. Partial kit: PCB, all board-mounted components, pots. Full kit: As above, plus footswitch and appropriate daughterboard/components for your selected bypass type (see Downloads section for details of those), jack sockets, DC socket, battery snap, hook-up wire, LED. Enclosure (pre-drilled) is available as an option with full kits, and will not take a battery. Knobs are not included. If you want the kit pre-built you must select the full kit/enclosure option and vertical-mount pots. Don't forget to select knobs from the set-screw section too. Inspired by: WiiO / RAH Difficulty: Medium PCB size: 50 x 50mm Knobs required: 4 (North), 5 (South) Enclosure: 1590B Direct-Connect compatible (4-way) Download the the INSTRUCTION PDF
Schematic
The schematic is in the vendor's build document, page 3. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 55 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 21 | ||||
| R1 | 10M | 10M | ||
| R2 | 1K | 1k | ||
| R3 | 3K3 | 3.3k | ||
| R4 | 3K3 | 3.3k | ||
| R5 | 12K | 12k | ||
| R6 | 200K | 200k | ||
| R7 | 10M | 10M | ||
| R8 | 3K3 | 3.3k | ||
| R9 | 3K3 | 3.3k | ||
| R11 | 100K | 100k | ||
| R12 | 10K | 10k | ||
| R15 | 130R | 130 | ||
| R16 | 3K3 | 3.3k | ||
| R17 | 3K3 | 3.3k | ||
| R18 | 10M | 10M | ||
| R19 | 12K | 12k | ||
| R20 | 12K | 12k | ||
| R21 | 62K | 62k | ||
| R22 | 100K | 100k | ||
| R10 | 100K | 100k | ||
| R14 | 220K | 220k | ||
| Capacitors 23 | ||||
| C1 | 250p | 250p | ||
| C2 | 100n | 100n | ||
| C3 | 220n | 220n | ||
| C5 | 470n | 470n | ||
| C6 | 47n | 47n | ||
| C8 | 10n | 10n | ||
| C9 | 4n7 | 4.7n | ||
| C10 | 470p | 470p | ||
| C12 | 100n | 100n | ||
| C14 | 2n2 | 2.2n | ||
| C15 | 2n2 | 2.2n | ||
| C16 | 10n | 10n | ||
| C17 | 100u | 100u | elec | |
| C18 | 100u | 100u | elec | |
| C19 | 4u7 | 4.7u | elec | |
| C20 | 100u | 100u | elec | |
| C21 | 10u | 10u | elec | |
| C22 | 100u | 100u | elec | |
| C23 | 10u | 10u | elec | |
| C4 | 47p | 47p | ||
| C7 | 1n | 1n | ||
| C11 | 1n | 1n | ||
| C13 | 220n | 220n | ||
| Diodes 3 | ||||
| D1 | 9.1V | 9.1V | ||
| D2 | 9.1V | 9.1V | ||
| D3 | 9.1V | 9.1V | ||
| Transistors 3 | ||||
| Q1 | BS170 | BS170 | ||
| Q2 | BS170 | BS170 | ||
| Q3 | BS170 | BS170 | ||
| Potentiometers 5 | ||||
| GAIN | 500KA | A500k | Potentiometer | |
| MASTER | 100KA | A100k | Potentiometer | |
| TREBLE | 500KB | B500k | Potentiometer | |
| BASS | 500KA | A500k | Potentiometer | |
| MIDS | 100KB | B100k | Potentiometer | |