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The Why and How of 70 Volt Audio Systems
http://erictraining.com/articles/AV/70-volt_cheat_sheet.pdf#:~:text=Next%20you%20need%20to%20run%20the%20wire%20from,move%20on.%20It%20will%20save%20you%20time%20later.
Wiring a 70-Volt Audio System - YouTube
https://www.youtube.com/watch?v=4rcSd3Ql88Q
Follow these wiring guidelines to ensure you configure your 70V audio system properly. For more information, visit http://bit.ly/2bCnjPl.
All About 70-volt Speaker Systems - Belden
https://www.belden.com/blogs/broadcast/all-about-70-volt-speaker-systems/
First, you need to buy an amplifier that has a 70-volt output. These are commercial-grade products so you won't find one at a hi-fi or home theater store. The second thing is that you will need to buy a special transformer for every speaker running off this system. The picture below was provided by Parts Express.
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 …
The Why and How of 70 Volt Audio Systems
http://erictraining.com/articles/AV/70-volt_cheat_sheet.pdf
The Why and How of 70 Volt Audio Systems The basic components of a 70-volt system are (1) an audio source, (2) a 70 volt amplifier, (Never hook up 70 volt speakers to a residential 8 ohm amplifier. Stuff could blow up!) (3) speaker wire (usually 16/2 gauge for runs up to 1,000 feet) and (4) speakers with transformers capable of receiving a 70 volt signal.
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