1590B · 1 knob
Fuzz Dog· HiLo
HiLo
Based on the Broughton Audio Low + High Pass Filter· 2 other boards clone it
- Category
- EQ / Filter· Delay/Mod/Filter
- Controls
- Gain
- Difficulty
- Medium
- Price
- £33.60
- Tags
- delay-mod-filter
From the vendor
Nice little utility box, offering high and low pass filters.
LPF is 12dB per octave with a range from 20kHZ to 330Hz.
HPF ranges from 25Hz to 190Hz with the same dB.
There's also a gain pot if you fancy a bit of oomph from your filtering, giving up to +20dB.
Power it at 9V, or give it 18V if you like some extra headroom.
Board-mounted pots for minimal wiring and easy enclosure mounting.
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, will not take a battery. Knobs are not included.
Builds are only available with full kits including enclosures. Please choose appropriate knobs.
Inspired by: Broughton Low + High Pass Filter
Difficulty: Medium
PCB size: 50 x 40mm
Knobs required: 3
Enclosure: 1590B
Direct Connect compatible (4-way)
Download theINSTRUCTION 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 30 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 15 | ||||
| R1 | 1K | 1k | ||
| R2 | 2M2 | 2.2M | ||
| R3 | 2M2 | 2.2M | ||
| R4 | 1K8 | 1.8k | ||
| R5 | 1K8 | 1.8k | ||
| R6 | 15K | 15k | ||
| R7 | 15K | 15k | ||
| R8 | 1K8 | 1.8k | ||
| R9 | 1K | 1k | ||
| R10 | 5K1 | 5.1k | ||
| R11 | 100R | 100 | ||
| R12 | 100R | 100 | ||
| R13 | 10K | 10k | ||
| R14 | 10K | 10k | ||
| R15 | 100K | 100k | ||
| Capacitors 11 | ||||
| C1 | 100n | 100n | ||
| C2 | 3n3 | 3.3n | ||
| C3 | 3n3 | 3.3n | ||
| C4 | 3n3 | 3.3n | ||
| C5 | 56n | 56n | ||
| C6 | 56n | 56n | ||
| C7 | 100n | 100n | ||
| C8 | 10u | 10u | Electrolytic capacitor | |
| C9 | 10u | 10u | Electrolytic capacitor | |
| C10 | 100u | 100u | Electrolytic capacitor | |
| C11 | 100u | 100u | Electrolytic capacitor | |
| Diodes 1 | ||||
| D1 | 1N5817 | 1N5817 | ||
| Potentiometers 1 | ||||
| GAIN | 50KA | A50k | Potentiometer | |
| Other 2 | ||||
| HP | 100KA DUAL | 100KA DUAL | ||
| LP | 100KA DUAL | 100KA DUAL | ||
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