Honestly, wouldn’t it be easier to install an ip pbx with paging zones for the public areas and extensions with auto answer in the class rooms? You could announce the entire building or dial individual class rooms. Not to mention class room to class room. Subscribed!
I considered that, but the audio quality with those did not satisfy me with most of those systems and with these schools it’s best to keep it simple! Thanks for your comment.
@@dfd5858 Just found this video. Haven’t looked more. But is this just you? Or do you work for a company. Cause you sound around my age range 23-26, if so. That’s awesome! You sound like you love what you do.
I don’t know who makes the PA systems at my school district, but they all had a different tone when an announcement was made. My elementary school (originally built 1905, retrofitted and major expansions added in 2001) had around a 1khz tone like a curse word bleep, and the voice of the teachers was quite clear, loud, and had some bass. Based on the tone I’m guessing it was a Rauland system with unknown round baffle flush mount speakers, likely higher end Quam speakers based on the sound. My middle school (built 1966, never fully renovated but some updates were done) had around a 500hz “ping” sound, and the voice was tinny, quiet and crackly. I have no idea what this system was, but I think it had Quam surface mount slanted front wall speakers, which seemed to be okay sounding based on the “thump” at the end of the message. My high school (built 1902, retrofitted and expanded slightly in 2015) has a loud, long 500hz boooooop tone, and the voice is also quite low quality, but louder. Speakers appear to be assorted Quam products. Also, the speaker baffles in the classrooms have digital clocks! All the other schools had analog clocks.
Fellow PA nerd! Based on what your saying that could be a DuKane starcall unit but I’m not 100 percent sure. The default bell tone is what you describe. Did the page tone sound like two chimes back to back?
@@dfd5858 I’m pretty sure the page tones were what I described. My elementary school had a bell tone for lunch and recess time which was around 7 dings, and the last ding didn’t fade out, it held for longer and cut off abruptly. It was a fairly quiet, pleasant tone, as was the page tone, which was about an octave higher than the usual tones I hear, around the pitch of the censor beep you hear on the radio, and very short. My middle school was old fashioned and had physical bells in the hallways, as well as buzzers behind the clocks in the classrooms. The clocks and bells were branded Simplex, and appeared to be original to the building. They were not, to my knowledge, hooked up to the PA system. The page tone there (the short “ping” sound) reminds me of the page tone I’ve heard in many Home Depot hardware stores. I’ve been in other district middle schools that still have the original clock system with real bells like this, and they’re sometimes also branded IBM but appear the same. My high school does not use a bell tone, instead relying on the teachers to page, or really make an announcement over the P.A. to let people know when the class changes are. The page tone is a longer steady “booooooooop” tone that really echoes through the halls. Also, a while back, I toured a recently remodeled middle school in the same district. Not sure what their bell tone was, but the page tone sounded like the “busy” signal on a phone!
Currently installing a fire alarm system in a school in the UK. Recently did a couple of restaurant's in high rise towers with fire and PAVA. Installed CCTV in Birmingham and Liverpool prison's. Enjoy watching these types of videos especially from other countries 👍
The electrolytic capacitors in those amplifiers must be very happy from the blistering hot heat. I can see one of these amps failing from a dry capacitor between the stages or from a high-power transistor finally dying after being scorched for so long.
I'm almost 30, but when you said "Someone fucked this up" my inner middler schooler came out and thought, "ooooooooo he said a bad woorrrrddddd" That coming from an IT guy who tends to say fuck you Office 365, what the fuck Active Directory, etc about 30 times a day. Either way, I don't envy you working on this. I thought my IDF racks were bad.
A comment and a subscribe. it's gonna take awhile for the algorithm to do its thing but keep posting and thou shall follow! It found me after all! I've not seen it done with what looks like cat 3 or 5 cable only two wire powered copper at least here in the uk. Each twisted pair split off to different speakers i presume? kinda cool that you can route both phones music and announcements like this
I worked in the Telecom Industry & worked on Low-voltage circuits for the past 25-years, & whomever worked on that school prior to this video really butchered the house wiring. Having any telecom or audio equipment in the boiler room is just a bad idea. This was just crazy every which way. 😮
Probably because the zoned paging would short out and not page anywhere. The original installer (Hired on a schoolboard single source contract to a friend of a schoolboard trustee a a 50 years ago (1973?) ago) is long gone and so the janitor who knows how to replace fuses was told to fix it so we can make morning announcements! At least that's what I walked into at one site.
So this really exist and are not only a movie thing that never work in real life ! So fun to discover ! Butchery happen everywere sad to see some old but well build system be destroyed in an "upgrade" attempt. If things was done right at the fist place it would be great.
35 years in the buisness, ohio area. Let me know if I could assist. Have seen and worked with this many times. If I could ask, Not sure of your experience, but do you inderstand 25volt distribution systems?
@@dfd5858 I did not know the audio out on the Nortel was balanced. I always thought it was unbalanced, because of it being just a two wire setup. Also, is the phone system they're using a Nortel mics or something else? I think how the staff would page on the Nortel would be by using feature 62 or feature 630 for phones and speakers. Hopefully, a student doesn't find out how to use it.
I thought I might have seen a Bluetooth system made for P.A. last week I didn't ask but would be great they looked like speakers on the ceiling with a blue glow around it
My only complaint is that this video wasn't longer (or didn't have a part 2).
Defective By Design
Honestly, wouldn’t it be easier to install an ip pbx with paging zones for the public areas and extensions with auto answer in the class rooms? You could announce the entire building or dial individual class rooms. Not to mention class room to class room. Subscribed!
I considered that, but the audio quality with those did not satisfy me with most of those systems and with these schools it’s best to keep it simple! Thanks for your comment.
@@dfd5858 Just found this video. Haven’t looked more. But is this just you? Or do you work for a company. Cause you sound around my age range 23-26, if so. That’s awesome! You sound like you love what you do.
Looks like at some point principal was too lazy to understand how to select needed zone and bought couple of beers to janitor to simplify the system
always wondered what the back end of these systems looked like. how awesome man. good job! I like fixing stuff others have given up on
I don’t know who makes the PA systems at my school district, but they all had a different tone when an announcement was made. My elementary school (originally built 1905, retrofitted and major expansions added in 2001) had around a 1khz tone like a curse word bleep, and the voice of the teachers was quite clear, loud, and had some bass. Based on the tone I’m guessing it was a Rauland system with unknown round baffle flush mount speakers, likely higher end Quam speakers based on the sound. My middle school (built 1966, never fully renovated but some updates were done) had around a 500hz “ping” sound, and the voice was tinny, quiet and crackly. I have no idea what this system was, but I think it had Quam surface mount slanted front wall speakers, which seemed to be okay sounding based on the “thump” at the end of the message. My high school (built 1902, retrofitted and expanded slightly in 2015) has a loud, long 500hz boooooop tone, and the voice is also quite low quality, but louder. Speakers appear to be assorted Quam products. Also, the speaker baffles in the classrooms have digital clocks! All the other schools had analog clocks.
Fellow PA nerd! Based on what your saying that could be a DuKane starcall unit but I’m not 100 percent sure. The default bell tone is what you describe. Did the page tone sound like two chimes back to back?
@@dfd5858 I’m pretty sure the page tones were what I described.
My elementary school had a bell tone for lunch and recess time which was around 7 dings, and the last ding didn’t fade out, it held for longer and cut off abruptly. It was a fairly quiet, pleasant tone, as was the page tone, which was about an octave higher than the usual tones I hear, around the pitch of the censor beep you hear on the radio, and very short. My middle school was old fashioned and had physical bells in the hallways, as well as buzzers behind the clocks in the classrooms. The clocks and bells were branded Simplex, and appeared to be original to the building. They were not, to my knowledge, hooked up to the PA system. The page tone there (the short “ping” sound) reminds me of the page tone I’ve heard in many Home Depot hardware stores. I’ve been in other district middle schools that still have the original clock system with real bells like this, and they’re sometimes also branded IBM but appear the same. My high school does not use a bell tone, instead relying on the teachers to page, or really make an announcement over the P.A. to let people know when the class changes are. The page tone is a longer steady “booooooooop” tone that really echoes through the halls.
Also, a while back, I toured a recently remodeled middle school in the same district. Not sure what their bell tone was, but the page tone sounded like the “busy” signal on a phone!
@@dfd5858 what you're
@@dfd5858100% that’s a Dukane MCS350 system, or should I say WAS an MCS350 😂
Currently installing a fire alarm system in a school in the UK. Recently did a couple of restaurant's in high rise towers with fire and PAVA. Installed CCTV in Birmingham and Liverpool prison's. Enjoy watching these types of videos especially from other countries 👍
of restaurants
Oof. That must have been a nightmare to figure out.
This is an excellent example of "fuck around and find out". They fucked around with teh wiring, and they found out that they buggered it up.
i guess that amps hot because when they twist speakers in series or parallel the ohms will be way out of whack 🤔
The electrolytic capacitors in those amplifiers must be very happy from the blistering hot heat. I can see one of these amps failing from a dry capacitor between the stages or from a high-power transistor finally dying after being scorched for so long.
P. S. You should make a part 2 video, this first one is way too short!
I'm almost 30, but when you said "Someone fucked this up" my inner middler schooler came out and thought, "ooooooooo he said a bad woorrrrddddd"
That coming from an IT guy who tends to say fuck you Office 365, what the fuck Active Directory, etc about 30 times a day.
Either way, I don't envy you working on this. I thought my IDF racks were bad.
A comment and a subscribe. it's gonna take awhile for the algorithm to do its thing but keep posting and thou shall follow! It found me after all! I've not seen it done with what looks like cat 3 or 5 cable only two wire powered copper at least here in the uk. Each twisted pair split off to different speakers i presume? kinda cool that you can route both phones music and announcements like this
I worked in the Telecom Industry & worked on Low-voltage circuits for the past 25-years, & whomever worked on that school prior to this video really butchered the house wiring. Having any telecom or audio equipment in the boiler room is just a bad idea. This was just crazy every which way. 😮
Video just came up on my feed, it was actually very interesting, hope to see more.
The old amp looks cool i would save it
Why would they want to downgrade to just 2 zones? Doesn't the Dukane do that ?
Probably because the zoned paging would short out and not page anywhere. The original installer (Hired on a schoolboard single source contract to a friend of a schoolboard trustee a a 50 years ago (1973?) ago) is long gone and so the janitor who knows how to replace fuses was told to fix it so we can make morning announcements! At least that's what I walked into at one site.
@@PWingert1966 lol
Atomic - Blondie at the end hahahah, i wish however that at least a folllowup was done for this video! Hope all is well mate!
Wow what a bird nest of wires. Hope you saved that amp on the old system.
cool video, hope you get more subscribers and continue making content!
Wow! what a butchery job! :( Did you get to speak with the Sweeney Todd that hacked it all to bits?!
At least you were able to give them something!
Lol I did not, they should be glad
Those old amps are worth keeping. They are bullet proof.
Thanks for sharing super cool
I bet they had someone that said they could do it with not alot of experience do this.
cute pfp
So this really exist and are not only a movie thing that never work in real life !
So fun to discover !
Butchery happen everywere sad to see some old but well build system be destroyed in an "upgrade" attempt. If things was done right at the fist place it would be great.
35 years in the buisness, ohio area. Let me know if I could assist. Have seen and worked with this many times.
If I could ask, Not sure of your experience, but do you inderstand 25volt distribution systems?
Good job!
Good stuff👍
Clean install
They clearly hired the cheapest person to do the work before.
They probably just got the IT guy to do it
@@s8wc3 exactly lol
looks like fun!
Good to use music to test it all out and water in the amp definitely shorted it out
Your a pro is the PA system at my school suppost to sound like a broken bc radio with a horrable mic going threw a damper for the base and high end
Nah but a lot do!
Hopefully you can fix the old amps and re purpose them !
Gave them to a friend! He will re use them
How is the phone system interfaced with the amps? Is it a station connection or a trunk? Also, what paging controller is being used?
The master telephone switch in this case a Nortel Meridian has a balanced audio output.
@@dfd5858 I did not know the audio out on the Nortel was balanced. I always thought it was unbalanced, because of it being just a two wire setup. Also, is the phone system they're using a Nortel mics or something else? I think how the staff would page on the Nortel would be by using feature 62 or feature 630 for phones and speakers. Hopefully, a student doesn't find out how to use it.
Very interesting
Are you in Canada? Or did someone just really like BIX blocks?
Definitely Canada. Looks like any random school I work in in Ontario.
... n00d blocks?
Those "In Case of Fire" posters take me back to elementary school in Ontario
Located in Oshawa Ontario just east of Toronto
I thought I might have seen a Bluetooth system made for P.A. last week I didn't ask but would be great they looked like speakers on the ceiling with a blue glow around it
nice one
What School is this?
How sad
sir, indian schools unfortunately
He certainly did the needful
FJB !
Castreau too!
Such a pointless and complex system just to spread noise