Apple Workgroup Server 6150/66 - Manual (Page 124)

m Do not change the sample rate for sound coming from a device connected to
the sound input port.
The other options cannot be changed. If you use a program that provides
sound recording in mono format, you can use its mono setting.
4 Close the Sound control panel.
Recording an alert sound
Although your server can produce stereo sound, the server records alert sounds
in the same way as other Macintosh models: in 8-bit mono sound, at a sample
rate of 22.254 kHz. This makes the alert sounds you record compatible with all
Macintosh computers. For instructions on recording an alert sound, see the
“Sound” topic in Macintosh Guide, available in the Guide menu.
Connecting external stereo speakers
You can take advantage of your server’s stereo sound output by connecting
external powered (amplified) speakers.
1 Assemble the speakers and the cable you need.
You need a cable with stereo miniplugs at each end to connect one or both
speakers to the computer. (Some speakers require a dual-plug adapter. Others,
like those shown here, accept a single stereo miniplug and are joined by
standard speaker wires.)
The following illustration shows the equipment configuration and the
connections for a computer sound system.
Audio In port
Sound output port
Powered
speakers
108 Appendix D / Using Stereo Audio