Why use 70 volt ceiling speakers?

Custom installers will often use 70V speakers for commercial background music applications. These speakers are useful when many speakers are being connected in series, for example in a restaurant or office for background music or short announcement applications. The 70V commercial speaker allows the installer to connect a few speakers together in series before running the line back to the amplifier. Regular speakers run each speaker directly back to the amplifier. 70V speakers are designed for commercial applications where powerful amplifiers are used to supply sound in large spaces. High-quality surround sound is not the purpose of 70V speakers and they are not recommended for home use.

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