HowToAV.tv explains 100v Line Audio - the most commonly used distributed sound system for commercial installations, public address and background music.
100 volt line is sometimes also referred to in the professional AV industry as 'constant voltage' or a 'high impedance' system. Using 100v line simplifies the installation of multiple speakers and allows the audio to be sent over longer distances with smaller gauge cable when compared with low impedance music amplifiers used in hi-fi or foreground/live music systems.
100v PA systems require specific 100v amplifiers and PA loudspeakers which feature a transformer - all of which are readily available from all professional audio distributors. These systems easily integrate with all standard audio source devices such as microphones, CD players, MP3 players and digital streaming systems.
100v line / PA / public address / BGM systems are most commonly applied to voice and background music applications, as opposed to foreground music and live performance. When you hear a paging announcement for example at an airport or railway station it will probably be through a 100v line audio system.
When it comes to wiring up the speakers they can all be parallel and 'daisy chained' together without worrying about the impedance of the system. There is no messing around with series and parallel wiring to match the amplifier on a 100 volt line system. You can go speaker to speaker or even star wire from a central point. The only golden rule is the combined speaker wattage of all speakers should not exceed the output wattage of the amplifier.
CIE AV Solutions is the UK's leading trade distributor of professional 100v line audio products and sound systems. With over 50 years experience in supply and system design for many of the UK's largest, high profile audio projects, our AV experts provide a unique level of technical support and customer service.
Call the CIE AV experts now on T. 0115 9770075 or email us at firstname.lastname@example.org
HowToAV.tv provides a whole host of tips, tricks and technology know-how for the professional and residential AV sectors.
Subscribe to our YouTube channel now at howtoav.tv for all the latest video casts or send us your questions to email@example.com