Developer Documentation
PATHHardware Documentation > Original Power Mac G3 Computers Developer Note


Audio Input and Output

The audio I/O features for Power Macintosh G3 computers are provided on the Apple DVD-Video and Audio/Video Card, Audio/Video Card, and Audio I/O Card when plugged into the PERCH slot on the main logic board. These cards include a line-level audio input port for a microphone or other line-level stereo input and an audio output port for use of headphones or amplified speakers. The Apple DVD-Video and Audio/Video Card and Apple Audio/Video Input/Output Card also include RCA jacks for audio input and output. Connection to the front panel sound push buttons, on all-in-one enclosures configured with either the Audio/Video Input/Output Card or Audio Input/Output Card, provides for control of the sound output volume by pushing the volume control buttons on the front panel.

Note
The Apple DVD-Video and Audio/Video Card is not supported in the Power Macintosh G3 All-in-one enclosure.

The sound specifications for the sound ports on AV configurations of the Power Macintosh G3 computers are

Stereo audio input for video audio is connected to the right audio channel (red) and left audio channel (white) RCA connectors. The composite video and S-video connectors use the same RCA audio connectors for video audio input.


© 1998 Apple Computer, Inc. - Revised 8/13/98