Awesome tone! Fun fact: The difference between this and the 5920 is that the 5920 has two sets of pigtails instead of just one, allowing for better continuity monitoring.
I went to a middle school for 6th grade that used these in the gym. They were set to 90 Bpm March time, Which sounded just like the IPhone Alarm sound. They were Sooo loud. I heard a Spectralert advance in person before and I can say that it was louder than the Advance I heard.
