Which speakers are used in addition to the main sound system to project sound into specific areas?

Fills are supplementary speakers used in a sound system to enhance audio coverage in specific areas where the main sound system may not provide adequate sound quality or volume. These speakers are strategically placed to fill in gaps in sound or to offer a more balanced audio experience for the audience.

For example, a venue might have a main sound system positioned to cover the primary seating area, but certain locations, such as the sides or back of the room, might not receive optimal sound. Fills address these areas, ensuring that all attendees experience a consistent audio quality, which is essential in theatrical performances where dialogue clarity and sound effects are critical.

Monitors, on the other hand, are used mainly for performers to hear themselves and the band on stage, rather than for audience projection. Surround speakers are typically part of a home theater setup, creating an immersive experience by wrapping sound around the listener, but they do not specifically target audio projection to certain audience areas in the context of theatrical sound design. Amps, or amplifiers, are crucial for boosting the audio signal but do not serve as speakers themselves. Thus, fills represent the proper choice for addressing specific sound projection needs within an audio setup.