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Constant Voltage (70-Volt) Audio Systems For Beginners
https://www.parts-express.com/70-volt-systems-beginners
We can design and analyze a 70V audio system from the aspect of impedance (in ohms, for the experts), but using power (in watts, for the rest of us) to arrive at the same end result is definitely more straight forward. The wattage of any 70V power amplifier is always given by the manufacturer. Most are from 20W up to about 100W.
All About 70-volt Speaker Systems - Belden
https://www.belden.com/blogs/broadcast/all-about-70-volt-speaker-systems/
Supermarkets, hotels, hospitals, airports are where you will find 70-volt distributed loudspeaker systems; anywhere you have more than a dozen speakers. While the power amp might be a few hundred watts, most speakers have a transformer that is designed for maybe 5 or 10 watts.
What is a 70v sound system? – TIC
https://ticcorp.com/blogs/default-blog/what-is-a-70v-sound-system-preview-5c104335c7ee3
Posted by Henry Yeung on August 20, 2018. 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 …
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.
How To Design A Basic Commercial Sound System
http://erictraining.com/articles/AV/how_to_design%2070%20volt.pdf
How To Design A Basic Commercial Sound System Commercial Sound System Basics Commercial sound systems are also referred to as 70-Volt Distributed Sound Systems. In a 70-Volt Distributed Sound System, a transformer is included with each speaker. This changes the system from low impedance (4 or 8 ohm) to high impedance and allows con-
70 V Sound System Myths - Professional Audio Training
https://www.prosoundtraining.com/2016/06/23/ten-70-v-system-myths/
The 70.7 volt system gets its name from the RMS (think average) voltage of a pure tone (a sine wave) whose peak voltage is 100 V, which is the highest voltage that, by code, can be present on the line. So, feed a sine wave into the system and turn it up until the “70 V” amplifier clips, and you will read 70 Vrms on the line, which is 100 Vpeak.
Your 70V Speaker System Wiring Diagram and Installation Guide
https://www.proacousticsusa.com/blog/post/your-70v-speaker-system-wiring-diagram-and-installation-guide/
This 70v speaker wiring diagram shows you how to wire a 70v speaker system as well as speaker volume control wiring for your commercial ceiling speaker system installation. Wiring a 70v speaker system, especially ceiling speaker and volume control wiring, can be complicated if you’re not exactly sure what you’re doing. This speaker system wiring diagram …
Basic Speaker Installation - 70 Volt Systems and Applications
https://www.proacousticsusa.com/media/wysiwyg/PDFs/pra-70v-speaker-installation-guide.pdf
audio will occur as a result of clipping. SPEAKER OUTPUT . COM. 4Ω 8Ω 16Ω 70V 100V + - + - + - a. b. c. 30 Watt Amplifier. 5 5 5. SPEAKER OUTPUT . COM. 4Ω 8Ω 16Ω 70V 100V + - + - + - a. b. c. 30 Watt Amplifier. 1. O. 1 1 30 watt maximum output-20% headroom buffer. 24 watt optimal wattage output. 0 watt maximum output-20% headroom buffer ...
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