Akashic Guitar effects PCB lookup
LOWMIDRESVOLBAND

1590BBS · 5 knobs

Dead End FX

Spectrum

Based on the Holmes H-X6 Spectrum filter pedal (The whaaaaat??)

Category
EQ / Filter· Eq
Controls
Low · Mid · Res · Vol · Band
Price
$15.00in stock
Buy the PCB at Dead End FX Build document

From the vendor

Clone of the Holmes H-X6 Spectrum filter pedal (The whaaaaat??). These were also sold under the Coron, Asama, and Sanox labels. Household names in the pedal industry, we know. Another fantastically handy, yet obscure Japanese circuit. This is a tone shaper. 3 band EQ, with added HP and BP filtering, and a resonance control added in for good measure. Use it at the beginning of the chain to set the tone, or after a particular pedal to shape it's sound. If you're looking for the perfect cocked wah sound, it'll do that too. One of the nicest circuits that no one has heard of.

Schematic

The schematic is in the vendor's build document, page 4. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 49 rows

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RefValueNormalizedTypeNotes
Resistors 25
R11K211.21kfrom schematic
R23K93.9kfrom schematic
R61K1kfrom schematic
R710K10kfrom schematic
R10100K100kfrom schematic
R11100K100kfrom schematic
R12100K100kfrom schematic
R134K74.7kfrom schematic
R1622K22kfrom schematic
R1722K22kfrom schematic
R18100K100kfrom schematic
R19100K100kfrom schematic
R2056K56kfrom schematic
R211K1kfrom schematic
R2210K10kfrom schematic
R24220K220kfrom schematic
R2551K51kfrom schematic
R26220K220kfrom schematic
R2710K10kfrom schematic
R2910K10kfrom schematic
R302K22.2kfrom schematic
R3110K10kfrom schematic
R321K1kfrom schematic
R331K1kfrom schematic
R3410K10kfrom schematic
Capacitors 9
C2680n680nfrom schematic
C32u22.2ufrom schematic
C710u10ufrom schematic
C922n22nfrom schematic
C1330p30pfrom schematic
C1422n22nfrom schematic
C1610u10ufrom schematic
C17220n220nfrom schematic
C82u22.2uOCR
Diodes 3
D11N9141N914from schematic
D21N9141N914from schematic
D31N41481N4148from schematic
ICs 3
IC1LM4558LM4558OCR
IC2LM4558LM4558OCR
IC3LM4558LM4558OCR
Potentiometers 9
LowB100KB100kPotentiometerfrom schematic
MidB100KB100kPotentiometerfrom schematic
ResB10KB10kPotentiometerfrom schematic
VolA10KA10kPotentiometerfrom schematic
BANDC100KC100kPotentiometerOCR
LOWB100KB100kPotentiometerOCR
MIDB100KB100kPotentiometerOCR
RESB10KB10kPotentiometerOCR
VOLA10KA10kPotentiometerOCR