Technical information

30
PreSonus AudioBox
™
USB
Overview Hookup Connecting
to a
Computer
Studio One Artist
Tutorials Technical
Information
Troubleshooting
and Warranty
5 Tutorials
Tutorials
5.0 Tutorials
5.1 Microphone Types
The AudioBox USB work with most types of microphones,
including dynamic, ribbon, and condenser microphones.
5.1.1 Condenser
Condenser microphones generally capture sound with excellent fidelity and are
among the most popular microphone choices for studio recording and, increasingly,
for live performance as well. Condenser microphones require a power source, which
can be provided by a small battery, an external power supply, or phantom power,
which is usually provided by a mixer, preamplifier, or direct (DI) box. Phantom power
is sent over the same mic cable that carries the audio signal; the term derives from the
fact that there is no visible power cord, and the voltage is not perceptible in the audio
path. The AudioBox USB sends 48 VDC phantom power from the XLR inputs only.
5.1.2 Dynamic
Dynamic microphones are possibly the most widely used microphone type,
especially in live shows. They are relatively inexpensive, resistant to physical damage,
and typically handle high sound-pressure levels (SPL) very well. Unlike condenser
microphones, most dynamic microphones do not require a power source.
Dynamic microphones, especially ribbon microphones, tend to generate low output
voltages, so they typically need more preamp gain than condenser microphones.
Ribbon
Ribbon microphones are a special type of dynamic microphone and
get their name from the thin metal ribbon used in their design. Ribbon
microphones capture sound with very high fidelity—especially higher
frequencies. However, they often are very fragile (many newer models
are less so) and typically cannot handle high sound-pressure levels.
Most ribbon microphones do not require phantom power. In fact, unless a
ribbon microphone specifically calls for phantom power, sending phantom
power to a ribbon microphone can severely damage it—usually beyond repair.
5.1.3 USB Microphones and Other Types
Many microphone types are available, and as technology evolves, it is likely
that more will be developed. One type of microphone to emerge recently is the
USB microphone. These may be dynamic or condenser mics, but because a USB
microphone is, in effect, an audio interface, we recommended that you not use
them with the AudioBox USB, as the likelihood of conflicting drivers is great.
If you are using a new or nonstandard type of microphone (e.g.,
USB, headset, laser, MEMS), please consult your microphone’s user’s
manual for power requirement and compatibility information.
Regardless of the microphone type you are using, we recommend
reading your microphone’s user’s manual thoroughly before engaging
phantom power and in case other usage questions arise.
5.1 Microphone Types