I was just clearing out some old computer files and found an incidental drone recording I made a while ago. The sound source is an air conditioning system inside a cupboard where some printers were kept in my previous office. Listening back I like how it sounds so I’ve made a quick edit:
It’s mono, recorded with a Marantz PMD660 and an Audio Technica PRO42 boundary mic – not my weapon of choice, but it’s what I had available at the time. The file has no processing, I just chopped out five minutes and then compressed to mp3..