Manual - Analogue Haven
Contents
1. www flightofharmony com Revised Feb 2010 We are tomorrow s shadows 7 8 fi2. clockwise decreases the rate which increases the delay time Feedback Controls how much of the delayed signal is fed back into the delay cell Feedback is what creates a reverberation or echo sound multiple repetitions of an acoustic event Clockwise rotation increases the amount fed back and thus the number of repeats counter clockwise decreases the amount The nominal operating area is between 6 00 and 9 00 during normal usage More than this will set up a self propagating feedback cycle that will quickly get out of hand Insert This is the attenuator for the feedback loop insert jack The jack is situated between the delay cell output and the feedback cell input The feedback cell input is calibrated for the output of the delay cell which is around 1 5V maximum and most standard signals inserted here will overload the feedback cell unless 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 a volume knob clockwise increases level counter clockwise attenuates the signal level Mix Um yeah Guess what this controls The balance of the mixed signal at the Mix output Se
3. awkward it is most likely due to this The goal is to make unique useful enjoyable and affordable instruments not just hoover out your bank account And remember every instrument has its quirks and unexpected aspects so RTFM 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 Sound of Shadows flowchart EX AVCAIN VCA Err 3 gt gt gt gt vcr jack In Out A A A alg gt gt gt gt gt gt gt gt Mix p gt gt gt gt gt v A A A A A A A Delay gt gt gt gt gt gt 2 gt gt gt gt Sut Y A v A v A gt DELAY N EXT Insert FEEDBACK 2i In Out gt gt gt gt gt gt gt jack In Ou y Xz v ALL LALALA LALALA LLL LLL LLL LUV Feature summary Delay VCA e VC delay rate e Input breakjack e VC feedback level e CV input e Signal input e Output e Clean Delayed and Mix outputs e Feedback loop insert jack The 30 pin header on the back of the module is for the SoS expansion module currently in development 1 Integrated Circuit 2 Hoover is a company that manufactures vacuum cleaners 3 RTFM Read The F cking Manual 2 8 Controls Rate This controls the delay clock rate which in turn controls how fast the delay steps through its memory array and thusly the amount of delay Clockwise rotation increases the rate which decreases the delay time counter
4. flight of harmony the Sound 0 Shadows Eurorack Module rev 0 o the Sound OF Shadows Rate Feedback Insert Rate Feedback VCA g Input Insert VCA Clean Delay Mix VCA 10 000 fi Components Assembled Sound of Shadows digital delay module DC power cable 9 Ribbon cable Doepfer standard M3x0 5x5mm Stainless Steel machine screws M3 Nylon washers Supply Voltage 12VDC Supply Current max draw 12V 21mA Max Input Voltage 12V TOV Max Output Voltage Ov Input amp Ouput I O coupling Direct Output Impedance 1kQ Control Voltage CV inputs EN aspi CV input coupling Direct CV input impedance 100kQ I O jacks are directcoupled The Delay circuit itself is not A DC signal at the input will be available at the Clean Mix and VCA outputs but not available at the delay output 1 8 What is it The Sound of Shadows SoS is a voltage controlled VC digital delay module based around the PT2399 echo IC 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 was the delay while 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
5. m the input of the feedback cell with the inserted signal now going directly to the feedback gain cell One use for this is to insert an effect or even another delay unit yes 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 enabling the VCA to be used completely independently of the rest of the module Output Clean A buffered and inverted copy of the input signal Delay The buffered amp scaled output of the delay cell Mix A linear mix of the Clean and Delay signals the balance of which is set by the Mix control pot VCA Output of the VCA 4 8 Other connections Power The power connector header is a 2x5 shrouded box header which accepts the standard Doepfer power cable This header style is polarized meaning the connector can only be inserted one way to prevent 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 Expansion Header This is
6. not be messing with them DELFB Y Mixvca v nvcin vcAIN SPARE3 FBIN GND vcvacv sPARE2 FBCV 9 UAG FBWPR R Y 5 O x 2 O O x lt m a veacv cikouT VCACV R RTPTWPR RTEPT3 O RTCV 12 zZz Zz O O x E Z 3 oO a Top row left to right Bottom row left to right IN R Signal input J CLNMIX con Clean buffer gt mix pot Signal input DELOUT Delay signal out J MIXOUT DELMIX con Delay buffer gt mix pot MIXVCA con Mix buffer gt VCA in IDELFB con _Delay IC out gt insert breakjack CLNDELMIX Wiper of mix pot gt mix Be buffer R VCAOUT VCA output R INVCLN Clean signal out J Supply V 12V re fei an ACV G Ground FBIN con Delay IC out gt feedback cell input R ND m n mum FBCV Feedback CV input R FBWPRIR on Feedback wiper gt FB level uffer 6 8 Stuff There is a lot of discussion about the Sound of Shadows on the Muffwiggler forums come check it out People have posted some excellent emos on there haunt the forums as well and new things are posted there long before they hit the f h website hitp www muftwiggler com forum index php A big thank you to those who have sent in suggestions and comments keep them coming Send samples to samples flightofharmony com Comments suggestions complaints to flight flightofharmony com Drawings and designs 2010 flight of harmony Red Hand Studios http
7. provided for an upcoming expansion module which contains a number of functions that were considered extras that is beyond those required for basic usage but feel free to make use of them for your own DIY needs However if you do so you do this AT YOUR OWN RISK We will not be held liable for damage caused by misuse of this module We We Hon tow li tows Pins marked with R are signal inputs that are ready for use with no additional components Some are already utilized via jacks on the panel denoted with J in the description however and no provision has been made for proper mixing of additional inputs which means that they should be considered as a multiple if used The R means that they are connected to a summing resistor on the input of an opamp on the main PCB Pins of the same name but without the R are connected to the same opamp input as the one with the R but do not have a summing resistor you must supply one All f h summing inputs are standardized with 100k input resistors This was done to allow the user to add as many inputs as desired within reason of course but all from one pin All outputs have 1k protection impedance resistors Unless marked as described above assume the terminal is NOT protected u n con connection 5 DIY Do It Yourself 5 8 The descriptions will be minimal if they aren t enough for you you should
8. riously this controls the mix between the Clean and Delay signals at the Mix jack really VCA This controls the VCA output level A K A the volume knob Standard behavior with a minor quirk this control will not fully attenuate the output but a negative CV applied to the VCA CV input will bring the level much further down It was either this or add another IC associated components to the PCB and jack the price further up 4 A K A Also Known As 3 8 Jacks The jacks are grouped by the type and direction into or out of the module of the relevant signal The VCA jacks are just labeled VCA as the function of each is already described by what row they are in CV in Rate Quirk warning Rate CV behavior is inverted Negative increases rate positive decreases If that bugs you too much just think of it as the delay CV input and the issue magically disappears Positive increases the delay and negative decreases the delay Feedback This works normally positive CV increases feedback negative decreases same VCA Same as feedback positive CV increases the output level negative attenuates it Signal in Input This is kind of important for a delay unit you need a signal to delay or else they re somewhat dull effects This is the jack where that signal is input into the delay Insert This is the feedback loop insert breakjack Inserting a plug here will disconnect the output of the delay cell fro
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