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3 O P E R A T I O N
3 . 1
D Y N A M I C
M I C R O P H O N E S
Dynamic microphones are characterized by lower output levels. Hence, more gain is needed to
amplify a dynamic microphone to operating level. Occasionally it is necessary to add the –20dB pad
to the microphone to avoid distortion (e.g. when recording percussion). Do not use phantom power
when using dynamic microphones.
3 . 2
P H A N T O M
P O W E R E D
Phantom powered microphones such as condensors and some ribbon microphones require external
power to pre-amplify the microphone acoustic pickup. These microphones typically have much
higher output than dynamic microphones. Hence the –20dB pad is almost always necessary when
close micing to avoid clipping the amplifier.
3 . 3
I N S T R U M E N T
I N P U T
The instrument inputs on channels one and two are designed to handle ¼" plugs from instruments
such as electric guitars and basses. These instrument inputs are ultra high impedance amplifiers
designed to allow the audio potential of an acoustic or electric instrument pickup to be fully realized.
Care should be taken not to overdrive these inputs with the signals from instruments with on-board
preamplifiers.
3 . 4
E N H A N C E M E N T
The Enhancement function of the DigiMax gives the processed signal a 3dB cut from 250
Hz to 5kHz. The slope of this frequency cut has a smoothing effect on the signal that is
being processed.
For certain voices and microphones, which may tend to possess a
characteristic mid-range rise, this feature will have the effect of flattening the mids. This
will result in a fuller frequency response and an apparently richer; fuller sound.
Experimenting with the Enhancement feature will allow you to expand the sound potential of
your available microphones and instruments. The following graph is a representation of the
EQ curve derived with the ENH switch, engaged.
M I C R O P H O N E S
13
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