The school I went to for kindergarten had AWFUL school bells. There were a LOT of them installed throughout the building, even in some classrooms, even in the music room, the multi-purpose room (now a computer lab), even in the maintenance hallway near the boiler room and water heater rooms! They were installed behind those gray grilles, which I think made their sound louder (though they were also obviously to reduce vandalism.) The bells were made by Simplex, and were the original bells from when the school was built in 1974. When I went here, it was a regular K-6 elementary school, and during my kindergarten year the bell system was having problems, meaning the bells would randomly ring when they weren't supposed to! (I think they still had the old electromechanical clock/bell control panel from the 1970s at the time; now they have a new computer-based one from American Time and Signal, but the old bells and clocks are still intact but they work properly. These bells were just as loud as the fire alarm!
If anyone was interested, the bells sounded exactly like that loud stock sound recording you always hear of school bells on movies and TV. Worst bell sound ever.
The main gymnasium was worse. They had bigger bells (these bells were 10-inch gongs, the rest of the school had 6-inch bells.)
Sometimes I can't help but wonder if this school was originally meant to be for the heard of hearing or something.
When I was here and we were in the hallway or some other area where bells were visible, I'd always have my ears covered because the bell could ring at any time (due to the time system having problems.) That was a lot of fun
The horrible elementary school I went to for grades 1-6 had NO bells whatsoever, so I was able to be weaned without them for six years. Among entering junior high, I thought it was going to be like kindergarten all over again, but this time on my first day there I quickly learned the areas where the bell was loud and where it was unusually quiet. It also helped that the second floor, and that a few parts of the first floor used older chimes instead of bells. The "real" bells were made by Edwards, and they and the chimes were the originals from when the school was built in 1957! They weren't as loud as the Simplex bells, but were still pretty loud if you were in a hallway or room with them or something! A few of these bells were disconnected, too. There was also one bell outside the speech classroom that was muffled up with cloth and duct tape and stuff, and sounded sort of like a buzzer as a result! Usually at lunch, or if I was in music, art or gym class, right before the bell was supposed to ring, I would excuse myself to one of the nearby parts of the building where the bell isn't so loud (the teachers didn't mind.) I also wore a watch to the school, and synchronized it to the school's master time control,
It was a Simplex 2350 time system from the 1980s, and had three bell circuits: one for most of the indoor bells, one for the auditorium/music room bells, the wood shop bell and the only working outdoor bell, and one for the cafeteria bell. This was replaced with another American Time and Signal AllSync system in 2010, just like the previously-mentioned K-8 school now has (after I had kindergarten and prior to last summer, they had a Simplex 6100 time control system.)
But when I started high school, we just had a tone on the intercom system, and that was a lot better. By then I was more concerned about trying to get to class on time before the tone sounded!
And additionally those schools still had their extremely old fire alarm systems with buzzer-style alarms. What fun! 