Apple Macintosh Performa 6400 Series - Manual (Page 40)

Using your computer’s sound features
Your Macintosh can play and record stereo sound from a variety of sources.
By connecting audio equipment to the sound input and output ports on the
computer, you can listen to or reproduce stereo sound. If it has an internal
CD-ROM player, your computer can also play and record sound from audio
compact discs (CDs). For information on using Macintosh system software
to choose audio input and output options, record an alert sound, or play
audio CDs, see the “Sound” topic of Macintosh Guide, available in the
Guide (h) menu.
About your computer’s sound ports and features
The sound input port is marked with an icon of a microphone (≈). The sound
output port is marked with an icon of a speaker (-). Your computer’s built-
in speaker functions as a subwoofer when external speakers (or a monitor
with built-in speakers) are attached. For more information on the subwoofer,
see the next section, “Using the Built-in Subwoofer.” For more information
on the sound input and sound output ports, see the section “Connecting
Audio Equipment.”
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