3 Volume button (down)

Decreases volume to the built-in

 

speakers, to external speakers, or to

 

headphones plugged into the stereo

 

speaker/headphone jack on the

 

computer.

4 Volume button (up)

Increases volume to the built-in

 

speakers, to external speakers, or to

 

headphones plugged into the stereo

 

speaker/headphone jack on the

 

computer.

5 Microphone jack

Connects an external mono

 

microphone. The jack requires a

 

3.5-mm, 2-conductor or 3-conductor

 

plug.

6 Stereo speaker/headphone

Connects headphones, head set, or

jack

external speakers to the computer.

 

The jack requires a 3.5-mm,

 

3-conductor plug.

7 Internal microphone

Built-in monophonic microphone for

 

the multimedia sound system. The

 

internal microphone supports audio

 

input for spoken comments.

NOTE: With stereo speakers muted, system beeps are still audible unless they have been turned off.

!

WARNING: To reduce the risk of personal injury, adjust the volume

control before putting on headphones.

 

 

Using Internal and External Microphones

The internal microphone is disabled when an electret condenser microphone with a 3.5-mm plug is plugged into the microphone line-in jack.

IMPORTANT: A stereo electret condenser microphone in the mono microphone jack is acceptable, but the left channel will be recorded on both the left and right channels. A dynamic microphone will not achieve the recommended sensitivity.

10-2 Using Audio Features