Akashic Guitar effects PCB lookup
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1590BBS

Dead End FX

Throat

Based on the rare Polytone Multivoicer

Category
Overdrive· Overdrive, Octave
Price
$15.00in stock
Buy the PCB at Dead End FX Build document

From the vendor

An overdrive... with a switchable octave up and clean blend. Who woulda thunk! This is a clone board of the rare Polytone Multivoicer. "The what?". Yeah... new one for us too, but thanks to Mike for bringing this one out of the darkness.

We made a couple of mods to make it a bit more builder and user friendly. The original used the old RC4739 op amps, so we swapped those out for some more common types. We also simplified the switching as well.

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 50 rows

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RefValueNormalizedTypeNotes
Resistors 29
R11m1Mfrom schematic
R247k47kfrom schematic
R3680k680kfrom schematic
R4330k330kfrom schematic
R533k33kfrom schematic
R647k47kfrom schematic
R710k10kfrom schematic
R8100k100kfrom schematic
R910k10kfrom schematic
R1010k10kfrom schematic
R115k15.1kfrom schematic
R1247r47from schematic
R1347r47from schematic
R1447r47from schematic
R1547r47from schematic
R1647r47from schematic
R1747r47from schematic
R18100k100kfrom schematic
R191m1Mfrom schematic
R2010k10kfrom schematic
R2147k47kfrom schematic
R2247k47kfrom schematic
R2313k13kfrom schematic
R2410k10kfrom schematic
R2510k10kfrom schematic
R265k15.1kfrom schematic
R275k15.1kfrom schematic
R285k15.1kfrom schematic
R295k15.1kfrom schematic
Capacitors 13
C1100n100nfrom schematic
C2100n100nfrom schematic
C55n5nfrom schematic
C6100p100pfrom schematic
C733p33pfrom schematic
C13100n100nfrom schematic
C14100n100nfrom schematic
C15100n100nfrom schematic
C16100n100nfrom schematic
C17100n100nfrom schematic
C18100n100nfrom schematic
C19100n100nfrom schematic
C2050n50nfrom schematic
Diodes 1
D51n40011N4001from schematic
ICs 1
IC3NE5532NE5532OCR
Potentiometers 5
FilterA10KA10kPotentiometerfrom schematic
Vol.BlendB10KB10kPotentiometerfrom schematic
BLENB10KB10kPotentiometerOCR
FILTERA10KA10kPotentiometerOCR
OPERATESA5A5PotentiometerOCR
Trimmers 1
TRIM150k50kfrom schematic