Wanted Electronic Siren Speaker Sound Reducer For Testing & Demonstration

[AeroTwinSonic]

I am looking to purchase a pre-made circuit that I could place inline between a 100 watt electronic siren and a siren speaker which would greatly reduce and adjust the decibel level of the siren's decibel level, for testing and demonstration purposes. Please feel free to message or email me at joseph@matternmedia.com with your description and pricing. Thanks For Reading This Ad!

 

[Jarred J.]

Go to Walmart.... Buy a regular incandescent lightbulb

 

[SafetyLighting]

http://www.homedepot.com/p/AudioSource-Impedance-matching-Volume-Control-AOSAE100VC/205411317

 

[MtnMan]

Get a few of these: https://www.amazon.com/dp/B008DGB46C/?tag=elightbars-20

A single 100 Ohm resistor in series with the speaker will cut the power down to about 1 W. Add more resistors in series for more reduction.

 

[FUZZNUT2U]

I have been using this resistor inline (470 ohm 5%) for several years, sound level is perfect in the shop or demo vehicle, Fry's cost $1.79. I have used it for Whelen, Federal Signal, Code 3, Sound Signal..

 

[CHIEFOPS]

With the resistor technique you can ditch the heavy 100 watt siren speaker and substitute a compact 4 watt speaker so your "test kit" is very portable

 

[AeroTwinSonic]

Chiefops: If I wanted to test a Federal PA200, I could simply place one 470 ohm resistor 'in line' connected to a 4 watt speaker? Would I need a resistor in line on each side of the two speaker wires? Also, would I simply solder the resistor in place or is there another simple way to connect? Thanks, Joe.

 

[CHIEFOPS]

I don't remember the correct value of the resistor, I use exactly what a FedSig installation manual recommended.
In any event I soldered but you can crimp the hard leads of the resistor inline with one of the 2 speaker leads and heat shrunk (shrinked?) each connection. I use an old Johnson 2-way radio speaker with alligator clips on the leads for quick hook ups to any siren's output speaker leads. Voila, instant indoor/anywhere siren tester.

 

[RAS Marine]

Or you could try a regular 120 Volt light dimmer inline with your speaker.

 

[Pete L.]

If you have an older speaker that has the removable re-entry cone,
you can shove a shop rag into the re-entry cone as a simple/cheap
solution.

 

[MtnMan]

Or you could try a regular 120 Volt light dimmer inline with your speaker.

Not a good idea.

 

[Scoot163]

http://www.homedepot.com/p/AudioSource-Impedance-matching-Volume-Control-AOSAE100VC/205411317

I can see where the light dimmer might not fit the bill. But would the impedance matching volume control quoted above? I'm thinking for use in collection display, not as a tester.

 

[RAS Marine]

What I did as a tester, was placed a variable resistor or audio volume control between the siren and the speaker to control the sound. It was just a thought.

 

[SafetyLighting]

I can see where the light dimmer might not fit the bill. But would the impedance matching volume control quoted above? I'm thinking for use in collection display, not as a tester.

I was short on time so didn't comment, just posted the link, but I posted it because it's what I use. With the impedance matching control, you can adjust the volume however and whenever you like without being stuck at one volume.

 

[Scoot163]

I was short on time so didn't comment, just posted the link, but I posted it because it's what I use. With the impedance matching control, you can adjust the volume however and whenever you like without being stuck at one volume.

Great to know! Thank you!