Act Curtain
A curtain (sometimes designed for a specific show) that is opened to signal the beginning of a performance. The Front Curtain is often used for this purpose.
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Acoustics
The science of, and study of sound. The acoustics of a room or space depend on its size and shape and the amount and position of sound-absorbing and sound reflecting materials.
Acoustic Reflector Panel
A reflective panel hung in the auditorium, generally above the audience, that is used to direct sound into desired zones. Often decorative in nature.
Amplifier (Amp)
An electronic device that amplifies sound signals to a point where they great enough to be heard through a speaker.
