ADDAC405 - Module audio modulaire ADDAC System - Free user manual and instructions

Product Type	Eurorack Synthesizer Module
Dimensions	10 HP (width) x 3U (height) x 25mm (depth)
Weight	Approx. 100 g
Power Requirements	+12V: 50 mA, -12V: 50 mA
Power Connector	10-pin Eurorack ribbon cable
Main Functions	Quad VCA with linear/exponential response, CV control, mixing capabilities
Number of Channels	4
Audio Input/Output	3.5mm mono jacks, 100kΩ input impedance, 1kΩ output impedance
CV Input Range	0V to +5V (unipolar) or -5V to +5V (bipolar, jumper selectable)
Frequency Response	20 Hz – 20 kHz ±0.1 dB
Total Harmonic Distortion	<0.01%
Noise Floor	-90 dBu
Front Panel	Aluminum, black anodized with white silk-screen
Maintenance and Cleaning	Clean with a soft, dry cloth. Do not use solvents or abrasive cleaners.
Safety Precautions	Connect only to Eurorack power supply with correct polarity. Avoid touching exposed circuits. Handle with care to prevent electrostatic discharge.
Spare Parts and Repairability	No user-serviceable parts inside. For repairs, contact ADDAC System support or an authorized technician.
Warranty	2 years limited warranty against manufacturing defects
Environmental Compliance	RoHS compliant
Country of Origin	Portugal
Intended Use	Professional audio and music production in Eurorack modular synthesizer systems

Frequently Asked Questions - ADDAC405 ADDAC System

What is the ADDAC405?

The ADDAC405 is a quad VCA module for Eurorack synthesizer systems, designed for audio and CV signal processing.

How do I power the ADDAC405?

Connect the included 10-pin ribbon cable to your Eurorack power bus, ensuring the red stripe aligns with -12V. The module requires +12V (50 mA) and -12V (50 mA).

What is the width of the ADDAC405?

The module occupies 10 HP (horizontal pitch) in a Eurorack case.

Can I use the ADDAC405 with audio and CV signals?

Yes, each channel can handle both audio and CV signals. The VCA response can be set to linear or exponential via jumpers on the rear.

How do I clean the ADDAC405?

Use a soft, dry cloth to wipe the front panel. Avoid any liquids or abrasive cleaners that could damage the finish.

What is the input impedance?

The audio/CV inputs have an impedance of 100 kΩ, ensuring compatibility with most Eurorack modules.

Is the ADDAC405 compatible with bipolar CV signals?

Yes, by changing internal jumpers, the CV inputs can accept bipolar signals (e.g., -5V to +5V). Default is unipolar (0V to +5V).

What should I do if the module doesn't power up?

Check the power ribbon cable orientation and ensure the bus board is receiving power. If the problem persists, contact ADDAC System support.

Can I mix multiple inputs?

The ADDAC405 does not include a built-in mixer. However, you can use an external mixer or combine outputs using a multiple module.

Where can I find the full manual?

The complete user manual is available for download in PDF format on the official ADDAC System website or from the notice-facile.com page.

USER MANUAL ADDAC405 ADDAC System

ADDAC System

Instruments for Sonic Expression Est.2009

INTRODUCING

ADDAC405

VC RELABI

GENERATOR

USER'S GUIDE. REVO1

October.2020

ADDAC

System

From Portugal with Love!

Welcome to:

ADDAC405 VC RELABI GENERATOR

USER'S GUIDE

October.2020Revision.01

DESCRIPTION

In 2009 John Berndt coined and defined the term Relabi in his essay "Relabi": Patterns of Self-Erasing Pulse, these are his own words: "Relabi, Def.: The experience of a palpably coordinated plurality of events that appears to be cyclical but simultaneously suspends identification of a uniform pattern, preventing a resolved sense of pulse. Relabi therefore seems equally pulsed and unpulsed at the same time. It is an experiential gestalt, a quality of experience, greater than the sum of its parts (it forms a sustained unity in experience, albeit of a new kind)."

He also makes the question: "Why would anyone want this Relabi experience? I maintain that much of what is exciting in musical forms involves an interplay between the setting up and denying of pulse expectations."

Inspired by this idea we developed this module that is both a gate/trigger and cv generator that can be freely used to trigger events or act as a complex modulation source.

Four Sine LFOs are internally generated, each has controls for gain. frequency and mute(off). These 4 LFOs are then mixed together to generate what Berndt named the "Relabi Wave" this "wave" becomes a complex bipolar CV source. This ±5v bipolar "wave" can be monitored on the 2 dedicated leds and is also available at its own Output.

Secondary LFOs Functions:

All secondary function can be changed by fastly toggling the switch from the the Up position (FREQ.) to the Middle position (OFF) and back to the Up position, to monitor this change the Trigger Button Led will blink once for the Left Function and twice for the right function (INT/EXT & FREE/LOCK1).

LF01 INT/EXT:

• Left function INT sets the LFO as an INTernal LFO, in this case the CV input will change the Frequency or Gain depending on the switch position.
• Right function EXT sets the CV input to be a direct CV input into the LFOs mix, this CV input will then be mixed with the remaining active LFOs to create the "Relabi Wave". In this setting the Gain switch position has no effect as the CV can already be attenuated by the dedicated attenuverter.

LF02, 3 & 4 FREE/LOCK1:

• Left function FREE sets each LFO to be independent from LFO1.
• Right function LOCK1 sets each LFO to be locked to the LF01 frequency, in this case the Frequency setting will operate as a divider/multiplier of LF01 (1/16, 1/8, 1/4, 1/3, 1/2, 1/1.5, 1/1.33333, 1*1.25, 1*1.333333f, 1*1.5, 1*1.75, 1*2, 1*3, 1*4, 1*5, 1*6, 1*7, 1*8).

DESCRIPTION

The Relabi Wave will then be compared to 2 Threshold points defined by the Top and Bottom Threshold controls. Every time the Relabi Wave crosses one of these thresholds each specific Output will go on accordingly:

Output 1: Relabi Wave goes higher than Top Threshold
Output 2: Relabi Wave goes lower than Top Threshold
Output 3: Relabi Wave goes higher than Bottom Threshold
Output 4: Relabi Wave goes lower than Bottom Threshold

These 4 Outputs are variable length Gate outputs defined by the Gate Length controls.

Top Threshold Led Goes On When the Relabi Wave is higher than the threshold setting.

Bottom Threshold Led Goes On When the Relabi Wave is lower than the threshold setting.

The 4 Outputs are also converted to a Trigger and mixed down into the ALL OUTS jack.

MEMORY

All LFO settings are saved in memory and recovered upon start-up.

PLAY MODES

PAUSE: in PAUSE mode the Trigger Button and Trigger Input will pause the generator and the Button Led will go ON.

RESET: at every TRIGGER Button Push or Trigger Input all LFOs will Reset and synchronize, this allows to generate repeatable patterns.

ADVANCE: at every TRIGGER Button Push or Trigger Input the generator will advance to the next cross point and pause, using the ALL OUTS this allows for a very peculiar kind of trigger delay.

This module will also be available as a full DIY kit.

MSRP: 250€

Shipping: Late November

Tech Specs:

10HP

4cm deep

100mA +12V

40mA -12V

ADDAC405

VC RELABI GENERATOR LOGIC TRUTH TABLE

CONTROLS DESCRIPTION

ADDAC405

VC RELABI GENERATOR SIGNAL FLOW DIAGRAM

graph TD
    A["TYPE LENGTH"] --> B["CY INPUT ATTENUER"]
    C["TOP COMPARATOR THRESHOLD"] --> D["CY INPUT ATTENUER"]
    E["TRQUENCU / OT / SAIN"] --> F["LFD 1 CAN ACCEPT AN EXTERNAL SOURCE INSTEAD OF INTERNAL LFD"]
    G["LFD 1 CONTROL"] --> F
    H["CY INPUT ATTENUER"] --> I["LFD 2 CAN ALSO BE A DIVISION OR MULTIFICATION OF LFD"]
    J["FREQUENCY / OFF / SAIN"] --> K["LFD 3 CAN ALSO BE A DIVISION OR MULTIFICATION OF LFD"]
    L["LFD 2 CONTROL"] --> K
    M["CY INPUT ATTENUER"] --> N["LFD 4 CAN ALSO BE A DIVISION OR MULTIFICATION OF LFD"]
    O["TRQUENCU / OT / SAIN"] --> P["LFD 3 CONTROL"]
    Q["LFD 3 CONTROL"] --> P
    R["FREQUENCY / OT / SAIN"] --> S["LFD 4 CONTROL"]
    T["FLAV MODE: PAUSE/RESET/ADVANCE"] --> U["TRIGGER/GATE: PAUSE/RESET/ADVANCE"]
    V["TRIGGER/GATE INPUT: PAUSE/RESET/ADVANCE"] --> W["TRIGGER/GATE INPUT: PAUSE/RESET/ADVANCE"]
    X["TOP COMPARATOR MONITOR LED ON WHILE ABOVE THRESHOLD"] --> Y["TOP COMPARATOR MONITOR LED ON WHILE ABOVE THRESHOLD"]
    Z["OUTPUT 1 TRIGGER/GATE CROSSERS THRESHOLD GOING UP"] --> AA["TOP COMPARATOR MONITOR LED ON WHILE ABOVE THRESHOLD"]
    AB["OUTPUT 2 TRIGGER/SATE CROSSERS THRESHOLD GOING DOWN"] --> AC["TOP COMPARATOR MONITOR LED ON WHILE ABOVE THRESHOLD"]
    AD["ALL OUTS CALL 4 OUTPUTS CONVERTED TO TRICERSMIXED AND MIXED"] --> AE["TOP COMPARATOR MONITOR LED ON WHILE ABOVE THRESHOLD"]
    AF["OUTPUT 3 TRIGGER/SATE CROSSERS THRESHOLD GOING DOWN"] --> AG["TOP COMPARATOR MONITOR LED ON WHILE BELOW THRESHOLD"]
    AH["OUTPUT 4 TRIGGER/SATE CROSSERS THRESHOLD GOING UP"] --> AI["TOP COMPARATOR MONITOR LED ON WHILE BELOW THRESHOLD"]
    AJ["RELABI WAVE CY OUTPUT"] --> AK["TOP COMPARATOR MONITOR LED ON WHILE BELOW THRESHOLD"]
    AL["DOTCOM COMPARATOR"] --> AM["TOP COMPARATOR MONITOR LED ON WHILE BELOW THRESHOLD"]
    AN["DOTCOM COMPARATOR THRESHOLD"] --> AO["TOP COMPARATOR MONITOR LED ON WHILE BELOW THRESHOLD"]
    AP["CY INPUT ATTENUER"] --> AQ["TOP COMPARATOR MONITOR LED ON WHILE ABOVE THRESHOLD"]
    AR["CY INPUT ATTENUER"] --> AS["TOP COMPARATOR MONITOR LED ON WHILE ABOVE THRESHOLD"]

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