Connecting A Stereo Speaker/Headphone - Compaq Evo N400c Hardware Manual

Audio and Video
Audio Components
Feature
1 Speaker
2
Volume buttons (2)
3
Stereo speaker/headphone
jack
4
Microphone jack
5
Microphone

Connecting a Stereo Speaker/Headphone

When connecting a device to the stereo speaker/headphone jack:
Use only a 3.5-mm stereo plug.
Use 32-ohm headphones and at least 8-ohm external speakers
for best sound quality.
The stereo speaker/headphone jack disables the computer
speaker when an external audio device is plugged into the
jack.
6–2
Function
Provides audio playback of
multimedia applications. When
using the computer in a Mobile
Expansion Unit (MEU), the speaker
may be disabled and system sounds
played through the speakers on the
MEU. Consult the documentation
included with the MEU for additional
information.
Adjust or mute the system volume.
Connects stereo speakers,
headphones, or a headset to the
computer
Supports a single sound channel
(monaural) microphone with a
3.5-mm plug
Supports audio input when the
display is open and has a standard
sensitivity of -50dB
Hardware Guide