Apple Soundtrack Pro 2 - Manual (Page 490)

490 Appendix C Working with Professional Video and Audio Equipment
PCI Audio Interface Card with Breakout Box
The majority of PCI audio interface cards have a breakout box with a large number of
XLR or 1/4" TRS connectors. The breakout box is attached to the PCI card via a long
cable with a multipin connector. The long cable allows you to place the breakout box
in a convenient location, so you can easily connect and disconnect your video and
audio devices without going behind your computer.
Audio Connectors, Cables, and Signal Formats
Different audio connectors and cables are suited for different purposes. They are
available for professional and consumer audio equipment, at a range of prices and
levels of quality. Audio connectors are often indicative of the kind of signal they
transmit. However, there are enough exceptions that it’s important to know what kind
of audio signal you are connecting, in addition to the connector type. An important
distinction is whether an audio connector carries a balanced or an unbalanced signal.
When connecting microphones and musical instruments to an audio interface or a
mixer, make sure the interface has the proper input jacks for the type of connectors
and cables you plan to use.
Analog Audio Connectors, Cables, and Signal Formats
The following is a cross-section of available industry-standard analog audio connectors,
cables, and signal formats.
1/8" Mini Connectors
These are very small, unbalanced audio connectors. Many computers have 1/8" mini
inputs and outputs at –10 dBV line level, and many portable audio devices such as
CD players, iPod digital music players, and MP3 players use these connectors for
headphone outputs. Portable MiniDisc and DAT recorders often use 1/8" mini
connectors for connecting microphones.
Breakout box Computer
(with PCI card)
Analog or digital VTR
XLR connector (2)
Mono miniplug connector
Stereo miniplug connector