If the projectorless version of this is the same as a Standard 30A (or so I think), how could the 30A be so much louder than this? I had those Standards in part of my middle school, and they were WAAAAAY louder than 92 dB at 3 feet. I'd say they were at least 100 dB at 10 feet. This Auth doesn't have a volume screw, does it?
@bi0boy I haven't found one. I suspect the way the inside of the projector is designed dampens the sound somewhat as I've heard people say 30As are real loud.
yup. I only got 102db right at the mouth of the horn, which is as loud as my NiB Vibratone 350 at 10ft. This is the only on of my AC horns I can set off without wearing hearing protection.
How much did the db meeter cost? Also, it's good you wear earplugs in other vids. I know a lot of people on here who test alarms like this and the 4040 and don't wear hearing protection. I think I've lost a little bit of my hearing, too.
I lost a bit of my hearing 7 years ago after getting way to close to a Federal 3T22 siren sounding for 5 minutes. As for the db meter, it cost me around $20 at Radio Shack. They sell 2 models, analog, which is cheaper, but harder to read, less sensitive, and not as accurate, and digital which is what I have and would recomend. It has a range of 70db-125db which is plenty for getting a good reading on any alarm.
Ah I remember this horn. All the ones I've heard had the deeper smoother buzz that this had when you first got it. While I like the old sound better, you could actually be right about this being they way they sounded new. Finding one NOS would probably be the only way to know. If that is so, then maybe this one will wear itself with enough use to have the previous deep smoother sound to it.
the only time I've heard these horns in an actual install (dual projector, possibily standard labled), they had the smoother sound, but one did sound rougher though. That system was replaced 10 years ago with Wheelock MT-LSMs, with one lone horn still remaining on the chimney outside (I'm sure it hasn't worked in a long time)
If the projectorless version of this is the same as a Standard 30A (or so I think), how could the 30A be so much louder than this? I had those Standards in part of my middle school, and they were WAAAAAY louder than 92 dB at 3 feet. I'd say they were at least 100 dB at 10 feet. This Auth doesn't have a volume screw, does it?
bi0boy 4 months ago
@bi0boy I haven't found one. I suspect the way the inside of the projector is designed dampens the sound somewhat as I've heard people say 30As are real loud.
Federal3t22 4 months ago
@Federal3t22 Oh okay. That would make sense. Yes 30As are deafening loud. U-MMTs in Continuous Horn are nothing compared to them
bi0boy 4 months ago
Auth made the clock and fire systems in one of the classroom buildings at my college. That fire alarm system had bells.
manidig 2 years ago
i got a hor today just like that made by champion siren that has the exzact same sound that is the way its suppost to sound i think
youngestpilotinGa 2 years ago
Was that a DB meter at 0:22?
coffeeandsugar20 3 years ago
yup. I only got 102db right at the mouth of the horn, which is as loud as my NiB Vibratone 350 at 10ft. This is the only on of my AC horns I can set off without wearing hearing protection.
Federal3t22 2 years ago
How much did the db meeter cost? Also, it's good you wear earplugs in other vids. I know a lot of people on here who test alarms like this and the 4040 and don't wear hearing protection. I think I've lost a little bit of my hearing, too.
coffeeandsugar20 2 years ago
I lost a bit of my hearing 7 years ago after getting way to close to a Federal 3T22 siren sounding for 5 minutes. As for the db meter, it cost me around $20 at Radio Shack. They sell 2 models, analog, which is cheaper, but harder to read, less sensitive, and not as accurate, and digital which is what I have and would recomend. It has a range of 70db-125db which is plenty for getting a good reading on any alarm.
Federal3t22 2 years ago
Odd looking thing
StigelRULES 3 years ago 2
it's the oddest looking one I have. The dual projector verson looked very odd too, kind of had a horseshoe look to it.
Federal3t22 3 years ago
Ah I remember this horn. All the ones I've heard had the deeper smoother buzz that this had when you first got it. While I like the old sound better, you could actually be right about this being they way they sounded new. Finding one NOS would probably be the only way to know. If that is so, then maybe this one will wear itself with enough use to have the previous deep smoother sound to it.
DavidFromAE 3 years ago 2
the only time I've heard these horns in an actual install (dual projector, possibily standard labled), they had the smoother sound, but one did sound rougher though. That system was replaced 10 years ago with Wheelock MT-LSMs, with one lone horn still remaining on the chimney outside (I'm sure it hasn't worked in a long time)
Federal3t22 3 years ago
wow, that's pretty quiet for a vibratory horn
kenshin891 3 years ago 2