Following on from the wonderful world of acoustics, we land slap bang on the lap of tuning up your PA system. In this chapter we’ll be looking at getting your PA ready for a soundcheck and the show.
When you’re all set up and ready to make noise, you first need to make sure that all of your speakers are working and that the right frequency responses are coming out of them. Pink noise is used for testing amplifiers and loudspeakers because it is a constant noise across the entire human hearing range. Pink noise power drops off 3dB per octave, unlike white noise, which generates the same power at all frequencies. The pink noise is generated from the console and is then put through the PA to clearly hear what is coming ...