Gym Lights Powering Up

This is a (mediocre) recording of gym lights being powered on. There is the distinct hum of the transformer/capacitor or whatever helps power them running in the background and then a distinctive click and electronic thud as the lights come on followed by the buzz of the overhead lights as they are warming up. Mp3 and wav files available. It's a pretty distinctive noise and i will try to get a better recording of it next time.