Bartlett High School T-135 AC/DC

Here's a T-135 AC/DC in Bartlett Illinois. This siren is right next to Bartlett High School. It started right at 10:00, and only revolved 3 times. In the background you can hear some P-50s from the FD, and from the Home Depot. Enjoy! Recorded July 7, 2009.

Category:

Science & Technology

Tags:

• New
• T-135
• in
• Bartlett
• Illinois

[TspesVladD]

Thanks for the all the comments.

[Thewoog34]

@timeslip325 The design of the T-128 and T-135 have an exponential horn coming out of every port. That's why this siren has a flowery-looking design. You can look up pictures of the insides of these sirens. It's actually a much more efficient design than the 2001 and is why the T-128 can put out the same amount of sound as the 2001, even with 4 less ports.

[Thewoog34]

@DasMidnightDrifter Have you heard the Sentry 40v2t? It has a version with battery backup (40v2t-B), has TWICE the sound output of the Cyclone (129-130 db @ 100 feet) and has the same 2/3 port ratio as the Cyclone with 10/15 ports. It sounds great and is the best siren in production today.

[spotandtiggerbug]

@lilaj34siren It is indeed a T-135. They have changed them. T-128s are smaller.

[lilaj34siren]

that is a t-128 not t-135 they are great sirens by the way our town has 3 of these a whelen vortex r4 and a thunderbolt 1000t

[sirenfan97]

ASC and ACA have always made good quality sirens.

[SgtSavage166]

@TheThunderboltFreak They look similar, but this is indeed a T-135 AC/DC. It's bigger and the shroud is shaped differently.

[TheThunderboltFreak]

this is a t-128 not a t-135

[timeslip325]

the only thing i think this siren needs is a longer horn - wouldnt that help the sound to carry further?

[thecompanycar]

@fireman746 If you are on the ground trying to get a full reading, you'll never succeed. It's required that they be mounted high enough not to cause significant hearing loss from the top of the pole. In all honesty, 120dB is pretty dang good. A 126 to 128 dB siren will get a reading at around 112 dB at ground level.

Whenever an engineering or acoustic firm is brought in to run tests, they always do a test at eye level with the horn in the air at 100ft. to get the most accurate reading.