Compaq Armada V300 Series Reference Manual page 101

The volume control on the computer overrides all other volume
controls in the software. That is, the volume from the integrated
stereo speakers, external speakers, or headphones will never be
louder than the sound level selected using the computer volume
control.
The integrated bass reflex speaker enclosures provide extended
low frequency output and improve the audio quality by reducing
speaker distortion. The bass reflex port openings are located on
the front of the computer.