Akashic Guitar effects PCB lookup
BLEND

1590BB · 1 knobs

PCB Guitar Mania

The Blender

Based on the Earthquaker Devices Disaster

Category
Utility· Split and blend
Controls
Blend
Difficulty
Intermediate
Price
€9.90out of stock

Heads up Builders widely report inconsistent quality from PCB Guitar Mania boards, and whether a given board works is a gamble. Read recent forum reports before ordering.

From the vendor

Project overview

The Blender is based on an original design called The Phantom Pain audio router. Which, in turn, used the audio pathway of Earthquaker Devicesʼs Disaster Transport Sr. Delay pedal with a “modular” circuit that makes it possible to incorporate any three effects of your choice.

Introduction

Let’s see how this creative invention works:

Send/return A is always in parallel with send/return B. Send/return C is still in series with effect B.

The Blend knob lets effect A stay parallel with effects B and C, mixes the parallel A and B into effect C, or allows a combination of series and parallels.

The original author suggests that it might be worth trying to have switching jacks for send/return B and wire them up so that when there is nothing plugged into the jacks, the send goes directly to the return pad. Though he hasn’t tested himself, it could be a good option if you feel like trying because this modification would create a standard series/parallel pedal with two effects.

If you plan to make this a standalone, modular pedal, you might need to use a 1590BB due to all the jacks you need (2 for each send/return and 2 for the in and out).

Controls

• Blend

For further analysis on this circuit, take a look at this thread on Free Stomp Boxes Forum and DIY Stomp Boxes Forum.

For any technical questions regarding this build, don’t forget to check out our Facebook Group and our forum at Free Stomp Boxes.

The Blender – Building Docs

The Blender – Drilling Template

Schematic

The schematic is in the vendor's build document, page 5. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 51 rows

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RefValueNormalizedTypeNotes
Resistors 29
R23100k100k
R24100k100k
R11m1M
R251m1M
R2100k100k
R264k74.7k
R3100k100k
R27100k100k
R4100k100k
R2847k47k
R5100k100k
R2947k47k
R61m1M
R71m1M
R8100k100k
R9100k100k
R10100k100k
R1115k15k
R1215k15k
R1315k15k
R14100k100k
R1510k10k
R1615k15k
R17100k100k
R18100k100k
R191m1M
R20100k100k
R21100k100k
R22100k100k
Capacitors 17
C922u22u
C1547u47u
C1747u47u
C147n47n
C21u1u
C31u1u
C447n47n
C51u1u
C61u1u
C71u1u
C81u1u
C101u1u
C111u1u
C121u1u
C1347n47n
C141u1u
C161u1u
Diodes 1
D21n40011N4001
ICs 2
IC1TL074TL074
IC2TL074TL074
Potentiometers 1
BLEND10KBB10kPotentiometer
LEDs 1
D1LED.1LED.1