In the original unit, sound is played through an internal speaker, rather than the TV set.

The internal speaker in the computer played the bouncy tune flawlessly.

At once the internal speaker came to life.

The game also had rudimentary sounds provided by an internal speaker.

When you play music through the internal speaker, the quality is tolerable, but not particularly crisp.

This allowed computer game music to have greater complexity than the simplistic beeps from internal speakers.

The internal speakers and accompaniment were removed to a facilitate the new features.

Sadly, though, you cannot play radio through the internal speaker.

Bit3 controls the internal speaker of the Atari 800/400.

The series was somewhat unusual for the fact that it had a physical volume control on the internal speaker.