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All About 70-volt Speaker Systems - Belden
https://www.belden.com/blogs/broadcast/all-about-70-volt-speaker-systems/
So the 70-volt distributed speaker systems are mostly confined to low audio-quality applications such as background music or paging. Supermarkets, hotels, hospitals, airports are where you will find 70-volt distributed loudspeaker systems; anywhere you have more than a dozen speakers.
Amazon.com: 70v speakers
https://www.amazon.com/70v-speakers/s?k=70v+speakers
The Why and How of 70 Volt Audio Systems
http://erictraining.com/articles/AV/70-volt_cheat_sheet.pdf
1) A 70-volt system allows you to use multiple speakers without worrying about impedance issues, which can overload and damage an 8-ohm amplifier. 2) A 70-volt system allows you to run more speakers off a single amplifier. 3) A 70-volt system plays in mono, not stereo, so speaker placement is not as critical.
Commercial 70V Speaker Systems - Parts Express
https://www.parts-express.com/pro-audio/Commercial-70V-Speaker-Systems
Commercial 70V Speaker Systems For functional and reliable permanent public address installations, shop our selection of commercial & 70V installed speaker systems, PA horns and drivers, mounting & installation accessories, and more.
70v speakers | Sweetwater
https://www.sweetwater.com/store/search.php?s=70v+speakers
Atlas Sound Complete Business Music 70V Ceiling Speaker Kit with Source Selection 50-watt Music and Paging System with 6 Ceiling-mounted Speakers, Wall Level Controller, and Self-diagnostic Technology $719.99 Or $15.00/month§ with 48 mo. financing* i Demo available for $647.99 Compare Atlas Sound Complete Business Music 70V Ceiling Speaker Kit
Commercial 70V Speakers | Outdoor Speaker Depot
https://www.outdoorspeakerdepot.com/commercial-70v/indoor-outdoor-speakers.html
A 70v output amplifier connected to 70v speakers allows you to maximize the wattage output with transformer taps that can be changed to select the power levels to step up or step down the voltage and daisy chain the wiring. This not only simplifies the installation process but allows you to reach your sound goals without overloading the amp.
70 V Sound System Myths - Professional Audio Training
https://www.prosoundtraining.com/2016/06/23/ten-70-v-system-myths/
The 70 V system is just a means of signal distribution. It has nothing to do with the type of loudspeaker used. While 70 V distribution works well for ceiling loudspeakers, the amplifier doesn’t know or care about “what” or “where” with regard to loudspeakers. Do you have separate circuits in your house for toasters, TVs, and lamps? Of course not.
25V, 70V, & 100V Constant Voltage Speaker Systems
https://www.lowellmfg.com/wp-content/uploads/What-is-a-25V-70V-or-100V-Speaker-System.pdf
25V, 70V, & 100V Systems: Longer Speaker Lines or Smaller Gauge Speaker Lines: The reduced cable loss that results from higher amplifier voltages in constant voltage speaker systems, allows the designer the option to run speaker lines farther, or to use smaller gauge cable to reduce the cost of the speaker system installation.
Understanding 70v / 100v line Loudspeaker Tappings
https://cie-group.com/how-to-av/videos-and-blogs/tappings
70v or 100v line loudspeakers feature a line transformer which steps up the audio outout sugnal 100 volts (or 70 volts!) so that the transmission line current for the chosen power output is relatively low. This reduces signal loss and allows lower grade / …
What Tap Setting Should I use on my 70V Speakers?
https://avdesignguide.com/70v-tap-settings/
The main component of a 25V, 70V or 100V system is the speaker transformer. In most cases you would purchase your speaker with an integrated transformer, and use the built in switch selector to choose your power tap. This power tap indicates the …
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