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  2. Projector - Wikipedia

    en.wikipedia.org/wiki/Projector

    A projector or image projector is an optical device that projects an image (or moving images) onto a surface, commonly a projection screen. Most projectors create an image by shining a light through a small transparent lens , but some newer types of projectors can project the image directly, by using lasers .

  3. Audiovisual - Wikipedia

    en.wikipedia.org/wiki/Audiovisual

    Audiovisual (AV) is electronic media possessing both a sound and a visual component, such as slide-tape presentations, [1] films, television programs, corporate conferencing, church services, and live theater productions. [2] Audiovisual service providers frequently offer web streaming, video conferencing, and live broadcast services. [3]

  4. CRT projector - Wikipedia

    en.wikipedia.org/wiki/CRT_projector

    A Zenith 1200 CRT Projector based home theater. Visible extending from the ceiling are three lenses, one each for red, green and blue Black and white CRT projector. A CRT projector is a video projector that uses a small, high-brightness cathode-ray tube (CRT) as the image generating element. The image is then focused and enlarged onto a screen ...

  5. Projection mapping - Wikipedia

    en.wikipedia.org/wiki/Projection_mapping

    This technique is used for most large projection-mapping shows, and requires skill and patience to be set up with specialised software. For smaller productions, smaller, lower-output projectors are sufficient. In most cases, a 2200-lumen projector is adequate for projections under indoor light or theatrical lighting.

  6. Professional audio store - Wikipedia

    en.wikipedia.org/wiki/Professional_audio_store

    Each stack of speakers in this setup consists of two EAW SB1000 slanted baffle subwoofers (each contains two 18" drivers) and two EAW KF850 full-range cabinets for the mid and high frequencies. A professional audio store is a retail business that sells, and in many cases rents, sound reinforcement system equipment and PA system components used ...

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