Also hard to beat for $44. I got the wiring kit the first one I got for an extra $10 but if you know what you are doing and have wire, a fusible link and stuff, you should be fine. The first one I did was on my '91 CB750, put it right under the headlight.

It's lower than the SuperTones but higher than the train horns of course. It's a nice tone, and since it's impeller-driven rather than compressor driven, you can quickly hit the horn for a pretty normal "toot" and just hold it for another half-second and 139dB. It GETs attention, and don't let anyone fool you - installing the compressor and all that is annoying. In both compressor-based installs I did the compressor was small and tucked away. Might be useful for air-tools for ants.

 

If you like one set of Hellas you should hear my car with 3 sets, it'll make your ears bleed. I've made people several car lengths up stop merging when they try to get in the fast lane doing 55-60 and I don't feel like slowing down. Or throw their phone if they're too busy to start going at a green light

I have been thinking of installing a train horn in the empty space where my stock exhaust goes since I'll have an air tanks when I install my bags though...

 

Im glad I spent the extra money for Hella's.. It's both a great way to get a laugh at people who get pissed at you from being frightened, as well as the ability to be heard and protect yourself.

 

To run 3 sets did you tap directly from the battery?

 

For regular cars and motorcycles, I use this one: [/QUOTE]

Ohh I'm liking that Stebel. Maybe a combo of Stebel and Hellas. I wonder what the current draw would be for the combination.

 

Ohh I'm liking that Stebel. Maybe a combo of Stebel and Hellas. I wonder what the current draw would be for the combination.[/QUOTE]

Would not matter, if you wire in a SPST relay into it, so the horn button trips the relay, and that provides the power to the horn combo.

 

I want a horn that reflects various tones in several directions with different timing so it sounds like multiple cars are all honking.

oh ****! that's a product!

 

In theory that shouldn't be too difficult to develop given the technology exists in current DSP based surround sound systems. Pitch the idea to some electrical engineering students as a senior design project.

 

I would think that a couple of horns and inline capacitors would provide a delay

 

A inductive-capacitive (LC) circuit is possible yes. The values of each LC would need to be calculated based on the required delay. The down side of going this route is the delays are not easily adjustable once placed on the circuit board. The reason to use a microcontroller is to be able to program the length between each tone(s) or the order of the tones. A simple 8bit microcontroller vs a full fledged 32 bit processor in this situation would suffice.

 

I would go this route. Mount multiple horns and each activated individually by a micro controller (ardueno?) that would randomize the style. (Delay frequency sustain etc)

User just pushes a horn button and a symphony of "wake up stupid!" Comes pouring out

 

Arduino looks like a nice kit - lots of add ons! I'm more partial though to designing with FPGAs (field programmble gate arrays) as you could design your specific requirements in Verilog/VHDL and then utilize the smallest logic density device vs being instruction set constrained (basically the hardware vs software arguement). Digilent makes nice FPGA or controller starter kits. I've known the owner of the company for many years and he is an instructor at Washington State University. Heck he could probably make this project a class assignment.

 

I get >135 dB out of my modded Stebels. A bit cheaper than a tank system but theres lag while the compressor spins up.

 

Wow. Thanks for this... I'm a RTL designer by profession so this is exactly my expertise. I'm gonna get a kit or two. Dunno for what yet.

(I'm not actually going to do the multi horn thing... I don't find that many situations where I want to be that obnoxious. ;P)

 

That Stebel is the same one I posted yesterday. They are great. You are exactly right, stock horn wiring trips the relay, and the horn(s) get their current direct from the battery. I think it even comes with the relay, if not - they are cheap.

A friend has 4 of them on a bar behind the grille on a Ranger.