Blue Robbie Operatör El Kitabı - Sayfa 6

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O P E R A T I O N S

Line Out

The balanced XLR male jack is for connection to your +4dBm balanced line-level input device with a XLR micro-

phone cable such as the Blue Kiwi, Cranberry or Blueberry. Robbie's nominal operating level is 0dB = 1.228V.

Robbie's line output is wired pin 2 hot.

Polarity (Ø)

The SPST switch labeled Ø/REV reverses the signal polarity at a point immediately before the active input

stage. When in its normal (out) position, the input signal passes unaffected. When depressed (in), the polarity

is reversed.

Pad

The SPST switch labeled 0 dB/-20dB activates Robbie's pre-attenuation circuit. When in it's normal (out) position,

input signal passes unaffected. When depressed (in) the input signal is attenuated by –20dB to accommodate

high-spl sources.

Mic/Inst

The SPST switch labeled MIC/INST determines which of Robbie's two inputs feeds the LINE output.

When in its normal position (out), the input signal to the rear-panel XLR MIC input will appear at

the LINE output. When depressed, (in), the input signal to the

⁄

Hi-Z front-panel input appears at

the LINE output.

+48V

The SPST switch labeled +48V activates Robbie's phantom power circuit. When in its normal position (out),

phantom power is OFF. When depressed (in), phantom power is ON. Most condenser microphones require phantom

power as well as some active dynamic and ribbon microphones. The Blue Ball microphone is a good example

of this. Check your microphone's specifications to determine whether it needs power. If it does not, be sure

Robbie's phantom power circuit is OFF. Though most modern microphones of various designs are fairly robust,

application of phantom power to a device not designed for it could result in permanent damage. Particular

care should be exercised when connecting ribbon microphones. Make sure phantom power is switched off before

connecting or removing any microphone to avoid transients that could damage other components in your audio

signal path.