https://www.dropbox.com/sh/vhtje97km4m713j/AABEFdcsEKGVQRj4SwOi6LzHa?dl=0
Binks audio test CD. Has numerous sweep tracks and different tone tracks to test speakers with. However these days, a lot of digital consoles and other devices probably have all this stuff built in, so you might not need the CD. If you need the tracks, they're above, though.
After that, I usually
play a
track *I* am very familiar with - and have listened to enough to know what it sounds like in my sleep. This often helps me find weird
EQ'ing or balance issues. That all backed up by
RTA, of course. It also depends on the genre of the event that I'm running or amplifying sound for. Are you simply testing the cabinet for functionality, or trying to tune a room?