e/Constant voltage speaker system

Information
has gloss	eng: Constant voltage speaker systems refer to networks of loudspeakers which are connected to an audio amplifier using step-up and step-down transformers to simplify impedance calculations and to minimize power loss over the speaker cables. Constant voltage speaker systems are also commonly referred to as 25-, 70-, 70.7-, or 100-volt speaker systems; Distributed speaker systems; or High impedance speaker systems. In the US, they are most commonly referred to as "70-volt speaker systems".
lexicalization	eng: Constant Voltage Speaker System
instance of	(noun) electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance speaker, loudspeaker system, loudspeaker, speaker system, speaker unit