70 Volt Audio Systems

All About 70-volt Speaker Systems - Belden

https://www.belden.com/blogs/broadcast/all-about-70-volt-speaker-systems/

The Why and How of 70 Volt Audio Systems

http://erictraining.com/articles/AV/70-volt_cheat_sheet.pdf

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. Where would you use a 70-volt system?

70 Volt Audio: Introduction to the Products and Principles ...

https://www.cepro.com/news/70_volt_audio_introduction_products/

Constant Voltage (70-Volt) Audio Systems For Beginners

https://www.parts-express.com/70-volt-systems-beginners

Constant Voltage (70-Volt) Audio Systems For Beginners High-Impedance Loudspeaker Distribution Audio distribution systems, especially those commonly used in department stores, warehouses, around race tracks, etc., require that many loudspeakers be driven from a single audio amplifier over long runs of speaker wire.

70 Volt Distributed Audio Systems - Terra Speakers

http://terraspeakers.com/70-volt-distributed-audio-systems/

70 Volt Distributed Audio Systems. Most of us are familiar with impedance matching for distributed audio systems. Resistive and autoformer impedance matching volume controls, unrealistic wattage ratings and more can conspire to make your life difficult if you’ve got lots of speakers to install for a distributed audio system. Feat not.

Constant Voltage (70-Volt) Audio Systems

https://www.parts-express.com/70-volt-systems

Constant Voltage (70-Volt) Audio Systems As common and useful as they are in commercial applications, there is often some amount of "mystery" attached to constant-voltage audio systems, commonly referred to as "70-volt", "25-volt" or "100/140-volt" systems.

WHAT IS 70-Volt? Everything you need to ... - Rockville Audio

https://www.rockvilleaudio.com/blog/what-is-70volt-everything-you-need-to-know-wiring-advantages-and-more/

70 volt systems are the number one choice for any application where you want to install multiple speakers. With 70 volt there are a lot of advantages over 8-ohm systems. One of the main advantages is the simplicity of the wiring as well as how easy it is to match up speakers with the amplifier. For example, with a 180 watt / 70 volt amplifier, you can install speakers that …

Commercial Sound Systems | 70 Volt Distributed Audio ...

https://www.proacousticsusa.com/complete-sound-systems/commercial-sound-systems.html

70 V Sound System Myths - Prosoundtraining

https://www.prosoundtraining.com/2016/06/23/ten-70-v-system-myths/