410Mhz or 510Mhz Horn?

[Ntrepid]

So I was perusing MBOEMparts.com and came across 2 horns in electrical:

003-542-27-20 510MHz
003-542-28-20 410MHz

I'm sure one is USA and the other is ROW. Which one is which? Am I right to assume the lower MHz is USA? Might be an interesting mod.


Robert

 

[gsxr]

All 124's use two horns of different frequencies. Those part numbers are for early 124 chassis.

The E500E uses 004-542-15-20 (400Hz) and 004-542-16-20 (500Hz).

 

[Ntrepid]

I always thought they were two of the same and not two discrete.


Robert

 

[Jlaa]

I always thought they were two of the same and not two discrete.
Robert

Hi Robert, Sorry. You thought incorrectly -

 

[speedy300dturbo]

For a louder, more authoritative "honk" you can upgrade to the W210 / W220 horns:

006 542 78 20 High Tone (510 Hz)
006 542 90 20 Low Tone (420 Hz)

Much cheaper to go OEM Bosch than Genuine MB for these.

 

[gerryvz]

Many of us 126 owners also have a factory-option, switchable horn tone -- city and autobahn horn tones. It's a swtich on the center console.

Someone's YouTube video on this:

 

[outrbnks]

I don't really know, but why not both?

I always thought they were two of the same and not two discrete.


Robert

I believe that anytime there are two horns on a car, (any car, any year, with little exception), that you will find that the two horns will produce two different tones.

I see in gsxr's post above that the two E500E horns are 400Hz and 500Hz. These two tones played together are called a "dyad" chord, (musical chord with 2 notes), and they are the beginnings of a standard major 4 note chord.

The 400Hz is the bass note, and the 500Hz is the 3rd harmonic above it.

If you had two more horns, with 600Hz as the 5th harmonic and 800Hz as the octave above the bass, you would be playing a full 4 tone major chord.

If anyone is interested, you can put the link below on several tabs in windows, and then play as many tones together as you wish.

Online Tone Generator - generate pure tones of any frequency

www.szynalski.com

Start by adjusting tab one to 400Hz, then adjust to 500Hz on the second tab, play them together and separately to hear the differences.

Add two more tabs with 600Hz and 800Hz for chits and giggles, and when playing all 4 together it's easy to hear this harmonically balanced standard major chord.

Anyway, these two E500E horns are 1 & 3, of a 1-3-5-1 harmonic major chord... Just Musical trivia...

 

[Ntrepid]

I’m was hoping the European horns were like the ones in the Tour de France. Now THAT would be a great upgrade!


Robert

 

[aliking]

my car has 1 horn only, its infront of the dual fans, and i see lot of cars online with only one horn, maybe the other one in a different location?

 

[gsxr]

The second horn is located near the passenger side fog light, behind the bumper.

 

[2phast]

Many of us 126 owners also have a factory-option, switchable horn tone -- city and autobahn horn tones. It's a swtich on the center console.

Someone's YouTube video on this:

Wasn't that called "FanFare"?

 

[gerryvz]

Fanfare or city/autobahn horns, aye.

 

[aliking]

The second horn is located near the passenger side fog light, behind the bumper.

View attachment 94435

thank you man, i will look for it today