ADDAC Systems - 711 Balanced Inputs
€279.00
Net: €234.45
In stock
| U | 3 |
| HP | 6 |
| Depth | 40 |
| +12V | 40 |
| –12V | 40 |
ADDAC711 - Balanced Inputs
The ADDAC711 is a dual-channel isolated DI box designed to keep the sound coming into a modular system free from any undesired noisy interferences, ensuring that what the inputs receive is what the external hardware is actually producing. It provides galvanic electrical isolation between the modular system and external sources, preventing impedance mismatch and ground loop induced hum.
The ADDAC711 circuit is designed around a unity 1:1 type audio transformer operating in the 20Hz to 20kHz range. This impedance matching transformer provides two fully balanced inputs via XLR connectors.
The LIFT/FLOAT/GND 3-way switch allows choosing 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 input and output grounds completely separate 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 option for avoiding ground loops or any other undesired interference occurring between a modular system and external hardware. Try out which option works best in any given situation.
The ADDAC711's inputs accept not only XLR balanced but also TS mono jacks and TRS balanced jacks.
Note: The ADDAC711 is meant to be used with line signals. Mic and instrument levels will still need to be amplified to line level prior to the module.