DigiDesign Mbox Pro Guide d'installation télécharger pdf (Page 39)

Chapter 5: Hardware Overview 31

About Phantom Power

Dynamic microphones (such as a Shure SM57)

do not require phantom power to operate, but

are not harmed by it. Most condenser micro-

phones (like an AKG C3000) do require phan-

tom power to operate.

If you are not sure about the phantom power re-

quirements for your microphone, consult your

microphone’s documentation or contact the

manufacturer.

Gain Controls

These knobs adjust the input gain levels of their

corresponding input (Input 1, Input 2, or

Aux In).

DI Inputs

Front panel DI connectors are provided for in-

put channels 1 and 2, to connect electric guitar,

electric bass, and similar instruments.

Mic/DI Source Selectors and LEDs

These switches select either the Mic (XLR) and

Line (TRS) inputs or DI inputs for each channel.

The DI and Mic LEDs indicate the current source

input.

The Aux In Source select switch selects the Aux

Line inputs, or Phono inputs.

For more information, see “Connecting Audio

Inputs” on page 37.

Peak LEDs

Input 1, 2 and the Aux Input have Peak LEDs

that also function as signal meters. They light

green at –60 dBFS, yellow at –6 dBFS, and red at

0 dBFS (peak).

Pad Switches and LEDs

The Pad switches engage a –20 dB pad on their

corresponding input channels. When engaged,

the Pad LEDs light.

Although phantom power can be used

safely with most microphones, it is possible

to damage some ribbon microphones with

it. Always turn off phantom power and wait

at least ten seconds before connecting or dis-

connecting a ribbon microphone.

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