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SoS-K v1.0 instructions Oct. 2019 — p.4/13

www.flightofharmony.com

What is it?

The Sound of Shadows (SoS) is a voltage-controlled (VC) digital delay 

module based around the PT2399 echo IC

1

 from Princeton Technology – which 

was, by the way, originally designed for Karaoke equipment.  The SoS is essentially 

two separate modules: a delay and a voltage-controlled amplifier (VCA). The 

focus of the SoS is the delay; the VCA was thrown in because half of an LM13700 

IC was unused, so the VCA is very basic. 

As with all f(h) products, the SoS was engineered towards maximizing 

functionality while keeping cost as low as possible. If some aspects of the unit 

seem awkward, it is most likely due to this. The goal is to make unique, useful, 

enjoyable, and affordable instruments, not just hoover

2

 out your bank account.

Remember: every instrument has its quirks and unexpected aspects, so 

RTFM

3

 all the way through! Specific quirks are mentioned in the description of 

the particular feature they apply to, so please read this through before emailing.

DELAY

In

Out

Input

x -1

x -1

In

Out

FEEDBACK

Clean

out

Mix

out

Mix

Delay

out

Insert

jack

EXT

VCA

out

In Out

VCA

VCAIN

jack

EXT

Sound of Shadows flowchart

Feature summary:

Delay

• 

VC delay rate

• 

VC feedback level

• 

Signal input

• 

Clean, Delayed, and Mix 

outputs

• 

Feedback loop insert jack

VCA

• 

Input breakjack

• 

CV input

• 

Output

1)   Integrated Circuit
2)   Hoover is a company that manufactures vacuum cleaners.
3)   RTFM = Read The F*cking Manual

Overview

(taken from SoS-E manual)

Содержание The Sound Of Shadow

Страница 1: ...KIT flight of harmony Digital Delay Effect Eurorack Module Kit rev1 0 ...

Страница 2: ...ing Direct2 Output Impedance 1kΩ Control Voltage CV inputs Vsupply CV input coupling Direct CV input impedance 100kΩ Number of pieces nuts washers of pots jacks not counted 159 Kit Difficulty Advanced 1 Has been tested and performs well with supply voltages from 9VDC to 15VDC 2 I O jacks are direct coupled The Delay circuit itself is not A DC signal at the input will be available at the Clean Mix ...

Страница 3: ... note 4 Nylon PCB Standoff see note 1 Potentiometer bag 2 A100k Potentiometer Input Insert 4 B100k Potentiometer 6 Washer 6 Nut 6 Knob 1 Jack bag 10 3 5mm TS jack 10 Washer 10 Nut 1 Reference manual this thing NOTE This kit is designed to be able to use jacks and or pots with varied heights from different manufacturers Lengths of PCB standoffs and pin headers will vary depending on contents The Po...

Страница 4: ... seem awkward it is most likely due to this The goal is to make unique useful enjoyable and affordable instruments not just hoover2 out your bank account Remember every instrument has its quirks and unexpected aspects so RTFM3 all the way through Specific quirks are mentioned in the description of the particular feature they apply to so please read this through before emailing DELAY In Out Input x...

Страница 5: ...attenuated hence the Insert attenuator Turn clockwise to increase the signal level counter clockwise to attenuate When not using the Insert jack it is recommended to keep this control turned fully clockwise to the maximum position Otherwise you are attenuating the output of the delay cell which will affect everything else further down the signal path Input This is the input level control Just like...

Страница 6: ...es they can be daisy chained quite effectively into the feedback loop To do this patch the Delay out into the desired effect and the output of the effect into the Insert jack You may need to adjust the Insert level control see above for best sound VCA This is another breakjack The input of the VCA is normalized normally connected to the Mix output Inserting a jack here breaks that connection enabl...

Страница 7: ...event connecting the power backwards and damaging the unit This assumes that you are using either the supplied cable or one manufactured by Doepfer Looking at the rear of the module the negative supply red stripe is on the left positive supply is on the right see fig 2 Contact email flight flightofharmony com Twitter flightofharmony Drawings and designs 2019 flight of harmony LLC http www flightof...

Страница 8: ...SoS K v1 0 instructions Oct 2019 p 8 13 www flightofharmony com PCB Assembled View ...

Страница 9: ...SoS K v1 0 instructions Oct 2019 p 9 13 www flightofharmony com Exploded View ...

Страница 10: ...SoS K v1 0 instructions Oct 2019 p 10 13 www flightofharmony com SMD Reference ...

Страница 11: ...SoS K v1 0 instructions Oct 2019 p 11 13 www flightofharmony com Control Jack Reference A100k A100k ...

Страница 12: ...SoS K v1 0 instructions Oct 2019 p 12 13 www flightofharmony com Power Cable Assembly Triangle indicates location of red stripe ...

Страница 13: ...SoS K v1 0 instructions Oct 2019 p 13 13 www flightofharmony com IC1 Orientation Diode Orientation Line Slope Line Slope Pin 1 Miscellaneous LINE OR LINE ...

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