ADDAC309 - Professional audio equipment ADDAC System - Free user manual and instructions

Product Type	Eurorack CV to Expression Converter
Brand	ADDAC System
Model	ADDAC309
Channels	2
CV Inputs	2 with attenuators
Outputs	2 x 1/4" TRS jacks (to pedal expression input)
Power Supply	Passive, powered from pedal (3.3V to 9V)
Current Consumption	0 mA on +12V, 0 mA on -12V
Size (HP)	4 HP
Depth	3.5 cm
Main Features	Converts CV signals to expression pedal control for effect pedals with TRS expression input; attenuators for scaling CV
Maintenance	Clean with a dry cloth; do not use liquids
Safety	Standard eurorack installation; ensure correct connection to pedal
Spare Parts & Repairability	Contact [e-mail]
Contact	[e-mail]
Year of Release	2023
Country of Origin	Portugal

Frequently Asked Questions - ADDAC309 ADDAC System

What is the ADDAC309 CV to Expression?

The ADDAC309 is a passive eurorack module that converts control voltage (CV) signals into expression pedal control signals for effect pedals with TRS expression inputs.

How does the ADDAC309 work?

CV signals from your modular are fed into the module's CV inputs, scaled by the attenuators, and then output to the effect pedal's expression input via 1/4" TRS jacks.

How many channels does it have?

The ADDAC309 features 2 independent channels, each with its own CV input, attenuator, and output.

Does the ADDAC309 require power from the eurorack case?

No, it is a passive module. It draws power from the connected effect pedal, matching the pedal's operating voltage (3.3V to 9V).

What voltage range can the ADDAC309 handle?

It works with pedal voltages from 3.3V to 9V. The CV input should be within typical modular levels (0-10V); use attenuators to scale.

Can I use any effect pedal with the ADDAC309?

Only pedals with a TRS expression input are compatible. Check your pedal's manual to ensure it supports an external expression pedal.

How do I connect the ADDAC309 to my pedal?

Connect a 1/4" TRS cable from the module's output (labeled 'TO PEDAL') to the pedal's expression input. Connect your CV source to the module's CV input.

What are the attenuators for?

The attenuators allow you to scale the incoming CV signal to match the pedal's expected sweep range, preventing overdrive or underutilization.

Is the ADDAC309 compatible with 0-5V CV sources?

Yes, but you may need to adjust the attenuator to ensure the 5V signal is properly mapped to the pedal's full range. Start with the attenuator at minimum and increase gradually.

Where can I get spare parts or support?

For spare parts, repairs, or support, contact ADDAC System at [e-mail].

USER MANUAL ADDAC309 ADDAC System

ADDAC System

Instruments for Sonic Expression Est.2009

INTRODUCING

ADDAC309

CV TO

EXPRESSION

USER'S GUIDE. REVO1

November.2023

ADDAC

System

From Portugal with Love!

DESCRIPTION

ADDAC309 CV to Expression allows a simple and straight forward connection between modular and effect pedals that features expression pedal TRS inputs.

Instead of using an expression pedal into the effects pedal the user can use this module in between a CV source and the Effects pedal to be controlled. This is a great way to control the available parameters on the effects pedals straight from a CV source.

ADDAC309 features 2 channels each with a CV Input with attenuator and a 1/4' jack output.

This is a passive module, the power needed for operation is taken from the pedal power instead of the modular frame, this allows for perfect matching of the pedal's operating voltage which can range from 3.3v to 9v.

Channel 1 Attenuator →

Channel 2 Attenuator

Channel 1 Input

Channel 2 Input

Channel 1 Output

Channel 2 Output

SIGNAL FLOW DIAGRAM

graph LR
    A["CV INPUT 1"] --> B["CV 1 ATTENUATOR"]
    B --> C["TO PEDAL 1 EXPRESSION INPUT"]
    C --> D["EFFECT PEDAL 1 EXPRESSION INPUT (TRS)"]
    E["CV INPUT 2"] --> F["CV 2 ATTENUATOR"]
    F --> G["TO PEDAL 2 EXPRESSION INPUT"]
    G --> H["EFFECT PEDAL 2 EXPRESSION INPUT (TRS)"]

Tech Specs:

4HP

3.5 cm deep

0mA +12V

0mA -12V

For feedback, comments or problems please contact us at: [e-mail]