Maker Pro
Maker Pro

Car horn as speaker for musical keyboard

Vikrama Chandar

Mar 12, 2017
4
Joined
Mar 12, 2017
Messages
4
I have an idea to build a circuit which picks up audio from the audio out of keyboard & plays it via the car's horn. Is it possible? If so suggest me how.
 

dave9

Mar 5, 2017
1,188
Joined
Mar 5, 2017
Messages
1,188
lol, depending on the car horn design, sure it's possible. Now you need to provide the specifics you should have in the first place.

Wait, you mean just a simple stock horn? No in that case you'd want a PA-style speaker in its place. So it's do-able but you need the PA speaker.
 

Bluejets

Oct 5, 2014
6,865
Joined
Oct 5, 2014
Messages
6,865
Most electric car horns operate by moving a metal disc which in turn opens and closes a set of pre-adjusted points, much in the same way as an electric bell.
Speakers operate by applying a variable to a speaker coil that is surrounded by a magnetic field.

Totally different principles.
 

kellys_eye

Jun 25, 2010
6,502
Joined
Jun 25, 2010
Messages
6,502
I once had an idea to record different vehicle sounds and replay then via a horn speaker secreted under the car somewhere. The system would have used throttle load to vary the tone/pitch of the sound.

You would have been able to select 'steam train' for example and 'chuff, chuff' away at traffic lights or the noise-some drone from a 2-stroke scooter or even an expensive Ferrari :p

Then I grew up :D
.
.
.
.
.
.
.
.
.
allegedly.
 

Kiwi

Jan 28, 2013
471
Joined
Jan 28, 2013
Messages
471
Boys should never "grow up". Our toys should just get bigger, flasher, and more expensive!

As Bluejets explained, a car horn won't work as a speaker.
 

FuZZ1L0G1C

Mar 25, 2014
366
Joined
Mar 25, 2014
Messages
366
A horn speaker (ie Megaphone type) uses a driver (voice-coil and magnet) with several folded horns in front.
Although suitable for amplifying the human voice, trying to reproduce the full range of a musical keyboard through any type of horn is difficult, if not impossible.
As already mentioned, car 'horn' and 'horn' loudspeaker, although names appear similar, use different technologies.
 

Hopup

Jul 5, 2015
253
Joined
Jul 5, 2015
Messages
253
I once had an idea to record different vehicle sounds and replay then via a horn speaker secreted under the car somewhere. The system would have used throttle load to vary the tone/pitch of the sound.

You would have been able to select 'steam train' for example and 'chuff, chuff' away at traffic lights or the noise-some drone from a 2-stroke scooter or even an expensive Ferrari :p

Then I grew up :D
.
.
.
.
.
.
.
.
.
allegedly.

I think they do use speakers in some sports cars because the low emission (small) engines won't give enough sound out. Also there's lot of products like this, which are kind of cool I guess.
 

kellys_eye

Jun 25, 2010
6,502
Joined
Jun 25, 2010
Messages
6,502
I believe they've even fitted 'speakers' to the F1 cars as the new hybrids aren't anywhere near as loud as the original normally-aspirated versions! The spectators were getting disappointed at the lack of 'noise' so the F1 authorities made the car manufacturers fit some sort of noise amplification device!
 

Bluejets

Oct 5, 2014
6,865
Joined
Oct 5, 2014
Messages
6,865
Must be surround sound as those mothers are noisy in any direction.
 
Top