A while back I posted pictures here of one of our sirens that took a hit and ate dirt due to a construction accident. Siren went yeet and exploded into a hundred pieces on impact. Last year the replacement siren was installed, however it wasn't until recently that it was actually hooked up to power.
Here's the video. This is the first 2910 to be filmed in the wild with this older style controller. Besides the missing hiss of the screens of the older 2800 series design, this siren has a very raspy sound. I believe that is the EZ-Pull driver doors resonating with the sound. It's something I've noticed with other 2900 series sirens on 560 Hz controls compared to the 2810s I've recorded on upgraded panels. The 2810s always had the hiss but put out a much more flat tone, while the 2900 series sirens tended to put out one that was more raspy. It's even more noticeable with the lower pitch. The hissing also blocked out some of the clipping these older controls used to do in alert due to the tone generator not taking that particular pitch too well; all 435 Hz sirens are factory set for 450 Hz but drop by 15 Hz due to bugs in the firmware. With the hissing gone now the clipping is very audible.
https://www.youtube.com/watch?v=LXUqfbls8SY