Dynamic Microphones; Phantom Powered Microphones; Instrument Input - PRESONUS BLUETUBE User Manual

Two channel microphone / instrument tube preamplifier
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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
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 condenser 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
The instrument input is designed to handle ¼" plugs from
instruments such as guitars and basses. This instrument input is an
ultra high impedance amplifier designed to allow the full audio
potential of an acoustic or electric instrument pickup to be realized.
Care should be taken not to overdrive the input with instrument
preamplifiers.
to
avoid
distortion
M I C R O P H O N E S
I N P U T
(e.g.
when
recording

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