Audio Devices - 14064

Illustrator Draftsman 1 & C - Volume 1 Equipment
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Audio Devices Introduction Audio devices provide sound to a presentation. It maybe a narration, sound effects, or music. A presentation is ineffective if an audience cannot hear it. Cassette decks Cassette decks provide the dimension of sound to a visual presentation. This music or narration promotes the understanding of the presented material. Cassette tapes are available in 30-, 60-, 90-, and 120-minute increments. You can record information on a cassette tape or use pre-recorded tapes. Some cassette decks require an additional device, called an amplifier, which increases the sound volume before it reaches a set of speakers. Nomenclature Cassette decks have an on/off power switch, a play button, a record button, a forward/fast forward button, a rewind/reverse button, a pause button, a stop/eject button, and a tape counter. The tape counter is useful when you are cuing sound at a specific time or interval and monitoring the amount of tape expended. Use To record, most cassette players require you to depress the record button simultaneously with the play button. Take care not to re-record over pre- recorded information. To prevent this, break off the small plastic tab on the side of the cassette cartridge. Clean the tape heads with a head cleaning tape or an alcohol solution and cotton swab after 8 hours of play. Speakers Speakers transmit sound so that everyone can hear. They use a ground wire and an input wire for connection to a player or amplifier. Use Place speakers far enough from the amplifier to prevent feedback or squeal. The speakers should remain in front of and facing the audience. Place them out of the way, preferably mounted on the ceiling. Care Keep the front grill of the speaker box. Replace speakers that have been tom or crushed. Damaged speakers distort sound or buzz and are distracting to the audience. Occasionally, disconnect the speaker and expose fresh wire to reconnect to the terminals. Oxidation of the copper core of the wire will cause the speaker to cut in and out. 5-19

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