A klaxon is a type of electromechanical horn known for its distinctive, attention-grabbing "oogah" sound. Originally trademarked by the Klaxon Company in 1908, the term has since become a generic name used for any horn that produces that iconic vintage tone. The car klaxon sound, that loud, unmistakable "oogah," was one of the earliest horn tones used on automobiles. It was designed to cut through traffic noise and grab attention, and it quickly became a staple of early 20th-century vehicles. Today, that same nostalgic sound is still turning heads, whether it's on a restored classic or used as a custom touch on a modern build.
In this article, we'll break down what a klaxon is, where the klaxon horn came from, how it works, why the sound became so iconic, and how you can get the same effect for your own vehicle today. If you've ever heard that vintage "oogah" and wanted it on your ride, we'll show you exactly how to do it.
HISTORY OF KLAXON HORNS
The Klaxon horn was invented in the early 1900s by Miller Reese Hutchison, an American electrical engineer. The name “Klaxon” comes from the Greek word klazō, meaning “to shriek,” which perfectly describes the sharp, mechanical sound it makes. That loud, vibrating “oogah” noise became one of the first standard warning sounds used on early automobiles.
By the 1910s and 1920s, Klaxon horns were installed on everything from Model Ts to luxury cars. At the time, roads were still shared with horses and pedestrians, so cars needed something loud and distinct to get noticed. The Klaxon horn delivered just that—and did it better than any bell or whistle.
Over time, as vehicles and traffic laws evolved, more modern horn sounds took over. But the classic car Klaxon sound never disappeared. It became a symbol of the early days of motoring and a go-to choice for anyone wanting to add some vintage character to their vehicle.
HOW KLAXON HORNS WORK
Traditional Klaxon horns use a small electric motor to spin a notched metal disk, which rapidly opens and closes contacts to create a pulsing electric signal. That signal powers a diaphragm that vibrates against a resonator, making the signature “oogah” sound. It’s a simple system, but the mechanical design gives it a raw, loud tone that’s hard to miss.
Older versions had fully mechanical internals, usually housed in a metal casing. They were loud by design—built to cut through early traffic noise and grab attention. You could hear one coming from a block away.
Modern versions, like the ones we carry, use updated electronics to recreate the same sound without all the moving parts. That makes them easier to install, more reliable, and better suited for today’s 12V vehicle systems. They still honk with that same unmistakable tone, just with less hassle.