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70 Volt Distributed Audio Systems - Terra Speakers
http://terraspeakers.com/70-volt-distributed-audio-systems/
Originally used exclusively in commercial applications, 70 volt audio distribution systems are becoming more common in today’s larger residential …
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.
70V Distributed Audio – Vellone Communication
https://vellone.com/wiki/70v-distributed-audio/
Constant Current Amplifier (like your home stereo amplifier), which have a low impedance output of either 8 ohms or 4 ohms, and Constant Voltage Amplifier (used for commercial distributed audio systems) which have a high impedance out put identifies in 25 volt, 70 volt, and 100volt output. 70 volt systems is the most commonly used for commercial …
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.
Constant Voltage (70-Volt) Audio Systems For Beginners
https://www.parts-express.com/70-volt-systems-beginners
Nonetheless, 70V systems are generally not used in home audio distribution systems as there are a number of other options that can provide better sound quality and features. For outdoor public address applications, horn-type speakers are used to direct and focus the sound over the area where it is wanted.
What is a 70v sound system? – TIC
https://ticcorp.com/blogs/default-blog/what-is-a-70v-sound-system-preview-5c104335c7ee3
70v system is a constant voltage distributed sound system, often used in commercial settings due to the ease of installation and design. Under the traditional loudspeaker system design, impedance load has to match the operable range of the amplifier. Since most loudspeakers are 8Ω and amplifiers can handle 4-16Ω, match
Multi-Zone 70V Distributed Sound System for Restaurants ...
https://www.proacousticsusa.com/multi-zone-70v-distributed-sound-system-for-restaurants-with-16-speakers-paging-and-bluetooth-media-player-up-to-4-zones.html
Model # MZSS-16EVIDMA725F. This commercial multi-zone 70-volt distributed sound system is designed for background music and paging announcements for up to four areas or zones of a restaurant, sports bar, brewery or indoor/outdoor food court up to 8,000 sq. ft. The multi-zone mixer has several audio and microphone inputs enabling the user to choose different audio …
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