ADDAC System ADDAC711 Manual


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Side 1/5
Instruments for Sonic Expression
Est.2009
August.2022
USER’S GUIDE . REV01
ADDAC711
BALANCED
INPUTS
INTRODUCING
From Portugal with Love!
ADDAC711 BALANCED INPUTS USER’S GUIDE
August.2022Revision.01
Welcome to:
page 2ADDAC SYSTEM
DESCRIPTION
ADDAC711 is a dual channel Isolated DI box and is all
about keeping the sound coming into your Modular free
from any undesired noisy interferences, making sure that
what youre getting from your inputs is what your exter-
nal hardware is actually producing. It provides galvanic
electrical isolation between the Modular system and
external sources preventing impedance mismatch and
ground loop induced hum.
ADDAC’s 711 circuit is designed around a unity 1:1 type
Low-cost Audio Transformer operating in the 20 Hz to 20
KHz range, this impedance matching transformer provides
two fully balanced outputs (via XLR connectors).
There are two independent channels on the module with:
Audio Output
Signal overload warning led
LIFT/FLOAT/GND toggle switch
Gain control
XLR Input
The LIFT/FLOAT/GND 3-way switch lets you choose
between lift, ground or floating ground.
In the LIFT position (left) the module circuit will be
“lifted” to ground through a 100R resistor and a 10nF
capacitor.
In the FLOAT position (middle) Ground will not be shared
leaving ins and outs grounds completely apart from each
other fully isolating both signals.
in the GND position (right) Ground will be shared between
inputs and outputs, here no isolation is used.
Any of these three positions may be the best form of
avoiding ground loops or any other undesired interference
occurring between your modular and the external hard-
ware. Try out which one of these options will work best
in any given situation.
This module will also be available as a full DIY kit.. Tech Specs:
6HP
4 cm deep
40mA +12V
40mA -12V


Produkt Specifikationer

Mærke: ADDAC System
Kategori: Ikke kategoriseret
Model: ADDAC711

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