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Dynasound Pro 70 Volt Sound Masking Systems - Industry Leading Sound Masking From Biamp
Quam Solution 1 Ceiling Speaker C10X/BU (25/70 Volt) Common/Black White | eBay
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Pure Resonance Audio Adds C6 & C8 70-Volt Ceiling Loudspeakers - Commercial Integrator
ECS-800-IC-4 Episode 800 Commercial Series 70-Volt In-Ceiling Speaker with Tile Bridge & 4 inches Woofer
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audio - Speaker systems: When is 25 volt used vs 70 volt? - Electrical Engineering Stack Exchange
