Live Music Revolution — Variation of the stage configuration

A bunch of people start their music dream after going to a live performance of a favourite band. The live music always gives deep impact on the fans of the band on the stage. And a live music show is always more amazing than the music from CDs. One of the secrets of this phenomenon is thanks to the devices on the stage which will mostly amplify the sound. Like this:

PA05

A few decades ago however, the configuration of the stage was not as advanced as the picture shown before. In the performance stage of the 50s, the technical principles of the sound system design were not all well thought out. In 1964 The Beatles always used small house PAs consisting of 12in speakers in columns driven by 100 Watt amps and Vox 30 Watt instrument amps to give live performances during their concert tour. But unfortunately, the performances were not that successful because of the poor PAs (PA stands for “Public Address”, meaning any system that amplifies sound so more people can hear it).

PA06

In the late 60s, the stage configuration became more focused on the on-stage monitoring of the band. That’s why we see a lot of equipment at that time.

PA01

By the 80s, the sound system is not on the stage anymore… they are moved to the ceiling. The Ceiling Clusters change the way to configure the stage and it release more space for the staging. Besides, the microphones and speakers are also replaced by more advanced versions, like active speaker cabinets…

PA03

By the 90s, the line source system enlarges the possible audience. A big advantage of this system is that there is that the sound quality changes less with different distances between the audience and the line source system.

PA04

If you have more interest on the details, please check the links below, they are also the reference source of this blog:
http://lenardaudio.com/education/08_live.html
http://monolake.de/interviews/supercomputing.html
http://www.nightheron.com/audioconsulting/whatisapa.html

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