RIO A2
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CONTROL ELEMENTS
Front Panel
1. Battery Power Switch
This push-button will activate the power supplied by the internal 9 Volt Batte-ry (not
supplied). The (2) Led will blink at several seconds intervals. If you are using your RIO
A2 Direct Box with external phantom power you can release the switch in order to
preserve the battery life.
2. Power LED
When operating with phantom power, this LED will light up continuously. If you are
using the internal 9 Volt battery, the LED will blink at several seconds intervals.
3. 20dB Attenuation Switches on input
Press either of these switches and you will attenuate the input signal by 20dB. In such
way you can produce increased headroom and reduce the risk of distortion because of
level peaks at input level when the input signal is quite hot.
4. Phase Inversion Switch
By pressing this switch you will reverse the signal phase by 180˚. In normal situations,
just forget about this switch but in case of inversion of the connectors this switch
becomes very useful to compensate the phase cancellation
5. GND Lift Switch
This switch disconnects the input signal ground from the output signal ground. In this
way you can avoid hum produced by ground loop.
6. High frequency Filter at 8 kHz
You can press this switch and activate the 8 kHz High Cut Filter when using an electric
guitar with your RIO A2 Direct Box.
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RIO A2
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APPLICAZIONI
Input
Output
3. Come convertire un segnale forte in un segnale MIC level
4. Come isolare lo strumento sul palco dalla console di missaggio
