Balanced Audio, Speakers, and Amplifiers Created by: Sarah Hutchens & Jacob Hanchett.
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Transcript of Balanced Audio, Speakers, and Amplifiers Created by: Sarah Hutchens & Jacob Hanchett.
![Page 1: Balanced Audio, Speakers, and Amplifiers Created by: Sarah Hutchens & Jacob Hanchett.](https://reader033.fdocuments.in/reader033/viewer/2022051417/5697bfbd1a28abf838ca1f7c/html5/thumbnails/1.jpg)
Balanced Audio, Speakers, and
AmplifiersCreated by: Sarah Hutchens & Jacob Hanchett
![Page 2: Balanced Audio, Speakers, and Amplifiers Created by: Sarah Hutchens & Jacob Hanchett.](https://reader033.fdocuments.in/reader033/viewer/2022051417/5697bfbd1a28abf838ca1f7c/html5/thumbnails/2.jpg)
What is balanced audio?
● Method of minimizing unwanted noise from interference in audio cables.
● Uses an extra line:○ Hot line (positive)○ Cold line (negative)○ Earth line
![Page 3: Balanced Audio, Speakers, and Amplifiers Created by: Sarah Hutchens & Jacob Hanchett.](https://reader033.fdocuments.in/reader033/viewer/2022051417/5697bfbd1a28abf838ca1f7c/html5/thumbnails/3.jpg)
How does balanced audio work?
● Two identical signals, which are opposite polarities, will cancel each other out.
● Cables used in these systems are designed to:○ carry two versions of the signals○ manipulate the polarities of these signals to
eliminate noise
![Page 4: Balanced Audio, Speakers, and Amplifiers Created by: Sarah Hutchens & Jacob Hanchett.](https://reader033.fdocuments.in/reader033/viewer/2022051417/5697bfbd1a28abf838ca1f7c/html5/thumbnails/4.jpg)
![Page 5: Balanced Audio, Speakers, and Amplifiers Created by: Sarah Hutchens & Jacob Hanchett.](https://reader033.fdocuments.in/reader033/viewer/2022051417/5697bfbd1a28abf838ca1f7c/html5/thumbnails/5.jpg)
Unbalanced Audio
● Use only two lines to transmit the audio signal○ Hot line (which carries the signal)○ Earth line
● Common in short cables● Common in less professional
applications● Any single-pin connector used for audio
is unbalanced
![Page 6: Balanced Audio, Speakers, and Amplifiers Created by: Sarah Hutchens & Jacob Hanchett.](https://reader033.fdocuments.in/reader033/viewer/2022051417/5697bfbd1a28abf838ca1f7c/html5/thumbnails/6.jpg)
Speakers
● Speakers are the final translation machine
● Voltage and amplitude change the sound
● Takes the amplified electrical signal and translates it back into physical vibrations, by the drivers, to create sound waves
![Page 7: Balanced Audio, Speakers, and Amplifiers Created by: Sarah Hutchens & Jacob Hanchett.](https://reader033.fdocuments.in/reader033/viewer/2022051417/5697bfbd1a28abf838ca1f7c/html5/thumbnails/7.jpg)
Parts of a speaker
![Page 8: Balanced Audio, Speakers, and Amplifiers Created by: Sarah Hutchens & Jacob Hanchett.](https://reader033.fdocuments.in/reader033/viewer/2022051417/5697bfbd1a28abf838ca1f7c/html5/thumbnails/8.jpg)
Types of Drivers
● Woofers○ Biggest drivers ○ Produce low frequency sounds
![Page 9: Balanced Audio, Speakers, and Amplifiers Created by: Sarah Hutchens & Jacob Hanchett.](https://reader033.fdocuments.in/reader033/viewer/2022051417/5697bfbd1a28abf838ca1f7c/html5/thumbnails/9.jpg)
Types of Drivers Cont.
● Midrange○ Produce a range of frequencies in the middle of the
sound spectrum
![Page 10: Balanced Audio, Speakers, and Amplifiers Created by: Sarah Hutchens & Jacob Hanchett.](https://reader033.fdocuments.in/reader033/viewer/2022051417/5697bfbd1a28abf838ca1f7c/html5/thumbnails/10.jpg)
Types of Drivers Cont.
● Tweeter○ Smallest driver○ Produce the highest frequencies
![Page 11: Balanced Audio, Speakers, and Amplifiers Created by: Sarah Hutchens & Jacob Hanchett.](https://reader033.fdocuments.in/reader033/viewer/2022051417/5697bfbd1a28abf838ca1f7c/html5/thumbnails/11.jpg)
Amplifiers
● Amplifies the strength of the electrical signal● Signal is sent to the speaker● Changes alternating current (AC) into direct
current (DC) to work properly ● The electrical signal from the microphone is
not strong enough to make the speakers work
![Page 12: Balanced Audio, Speakers, and Amplifiers Created by: Sarah Hutchens & Jacob Hanchett.](https://reader033.fdocuments.in/reader033/viewer/2022051417/5697bfbd1a28abf838ca1f7c/html5/thumbnails/12.jpg)
Amplifiers Cont.● Transistors
○ Heart of most amps○ Uses conductors and semiconductors○ It boosts the voltage
![Page 13: Balanced Audio, Speakers, and Amplifiers Created by: Sarah Hutchens & Jacob Hanchett.](https://reader033.fdocuments.in/reader033/viewer/2022051417/5697bfbd1a28abf838ca1f7c/html5/thumbnails/13.jpg)
Amplifier Circuit
![Page 14: Balanced Audio, Speakers, and Amplifiers Created by: Sarah Hutchens & Jacob Hanchett.](https://reader033.fdocuments.in/reader033/viewer/2022051417/5697bfbd1a28abf838ca1f7c/html5/thumbnails/14.jpg)
Summary ● Use the correct wires for the best
sound and safety of the equipment ● Speakers change the electrical signal
back into sound by vibrating the drivers
● Amplifiers amplify the strength of electricity
![Page 15: Balanced Audio, Speakers, and Amplifiers Created by: Sarah Hutchens & Jacob Hanchett.](https://reader033.fdocuments.in/reader033/viewer/2022051417/5697bfbd1a28abf838ca1f7c/html5/thumbnails/15.jpg)
Bibliography
● www.mediacollege.com● http://www.howstuffworks.com/amplifier.htm● http://www.howstuffworks.com/speaker.htm
![Page 16: Balanced Audio, Speakers, and Amplifiers Created by: Sarah Hutchens & Jacob Hanchett.](https://reader033.fdocuments.in/reader033/viewer/2022051417/5697bfbd1a28abf838ca1f7c/html5/thumbnails/16.jpg)
Thanks for listening! Hope you learned a little something about balanced/unbalanced audio, speakers and
amplifiers!