Use a loudspeaker as a horn

[robert-j-o]

Hello. Now that I've got you concerned/intrigued:

I found this exact loudspeaker some time ago : ALS1000 D Soundstar - https://www.fedsigvama.com/en/product/soundstar-als1000/, and I've been wanting to do something with it ever since… more of an experiment really. That being said, I don't know much about anything.

I would like to use it as a alternate horn on a motorcycle. I suppose for that I would need a way to convert my motorcycle's 12V DC to oscillate at a frequency that's around 400/500 Hz… at first I thought something like this (link to the Amazon product) could do the trick, then I realised it operates at a frequency of 12KHz… which clearly won't work!

Do you guys have any idea how I could achieve this?

Thanks for your time
Robert

 

[robert-j-o]

Oh I'm sorry I think I should have posted in the DIY forum! Is there any way to move my post?

 

[DPG]

Yeah the motor speed controller is not the way to go. To be honest by the time you've found something suitable and made it suitable for the harsh environment of a motorbike you would be better off just buying a loud bike horn.

 

[robert-j-o]

Yeah the motor speed controller is not the way to go. To be honest by the time you've found something suitable and made it suitable for the harsh environment of a motorbike you would be better off just buying a loud bike horn.

See that's progress! I know that I know nothing

Yeah it's not really about loudness, or about the horn to be honest, I've got a perfectly adequate horn on my bike. It's about finding a way… I find that appealing!
What got me thinking is that this product is origianlly a loudspeaker intended for emergency vehicles, and I thought if they can make it do all these sirens and sounds surely it would be somewhat easy to have it make a tone at the push of a button . Then again, I know nothing!

I love your bike by the way DPG

 

[DPG]

See that's progress! I know that I know nothing

Yeah it's not really about loudness, or about the horn to be honest, I've got a perfectly adequate horn on my bike. It's about finding a way… I find that appealing!
What got me thinking is that this product is origianlly a loudspeaker intended for emergency vehicles, and I thought if they can make it do all these sirens and sounds surely it would be somewhat easy to have it make a tone at the push of a button . Then again, I know nothing!

I love your bike by the way DPG

You could definitely do it with a suitable oscillator and power amplifier. I'd be tempted to do a Google search for siren circuits to be honest though.

 

[Avo Mk8]

I'd be tempted to do a Google search for siren circuits to be honest though.

you tempted me!
There's kits and DIY things about, and you can even buy the real thing (probably need a mortgage!)

EuroSmart Motorcycle Weatherproof Siren - 8-82414

Weatherproof programmable motorcycle siren amplifier with up to 28 tones - compact and lightweight

haztec.uk

 

[littlespark]

wire up a 12v DC fire alarm sounder..... confuses the hell out of pedestrians

 

[robert-j-o]

Great ideas. I love the fire alarm one, who would have thought I would have so much fun on an electricians forum!

I found a few diagrams online, but that's where I get lost. Those circuits are like black boxes to me : I understand what gets in, I understand what gets out, how they do their things remains a mistery.

I like the idea of an oscillator and power amplifier though, I'll look into that next