MAIN FEATURES AND OPERATION
Gain Boost Section - Phantom Power Section
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Gain Boost Section
A switch is available on the side panel to apply a gain boost of 20dB for each input. Gain boost should be
applied when low level signals are being fed to an input, such as a microphone or guitar. For high level
signals such as those from a CD player or synthesizer, gain boost should not be applied, otherwise signal
distortion will occur.
Phantom Power Section
If the Microphone being used is a ‘condenser’ type it will need to have a DC voltage (normally 48V) sent
to it before it will generate any audio output signal. Some microphones have their own power supply to do
this but if not, the SpeedIO can supply the necessary voltage.
Press the appropriate side panel switch to apply phantom power to an input. The LED in this section will
light indicating that phantom power is being sent to the microphone on the selected channel.
WARNING
: Some Ribbon, Dynamic and Electret type Microphones should NOT have phantom power
delivered to them and if so may be damaged! - Check with the documentation supplied with the
Microphone to see if it requires phantom power.
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