What musical note are most car horns? (qualifies as trivia)

Having a hard time finding any info on this subject. Seems to make a good trivia question too, for that reason. I know nothing technically about music, so that adds to the confusion too.

Lots of American cars use a HIGH and a LOW note 2-horn setup, which combine for a nice harmony that also amplifies the sound over either standing alone. For my truck, I went one better & installed A, C, D, & F note horns years back, so it would have a sound that stands out when I need to use it. All 4 notes together sound like a Cadillac (I believe they use the same 4 notes, but they don't tell you that). If you combine different notes that do not "match", you can get VERY irritating & unpleasant sounds. The A, C, D, F combo is a perfect harmony. I can video it, on request.

Now I know one of the Hi/Lo combo is an F note. What is the other note?

I wish horn manufacturers would list this in their specifications so we know what the hell we're buying. I'm picky with my automotive stuff!

http://www.cogapa.com/history.htm Found this SMITTY, heck I considered myself lucky if my horns worked to be able to pass inspections, I did put an air horn on one that ran off a small can, used to scare the hell out of people.

SMITTY wrote:Now I know one of the Hi/Lo combo is an F note. What is the other note?

I'm going to guess that F is the Lo, and the B-flat above it is the Hi.

I will be sure to ask the salesman these questions next time I car shop. He will consider me a nut case and give me a good deal to get rid of me.

Only good deal I ever got from a car dealer came with an Assurance of the Peace Judgement ( I believe it was called) I got my car fixed for free by another dealer & I couldn't set foot back on the first dealers property. Worked for me.

I always liked the Caddy horns, I seem to recall seeing 3 horns under the hood. I detest those annoying foreign car wimpy sounding horns.

http://www.soundboard.com/sb/Car_Horn_Sounds.aspx

Yeah me too. That's why I've converted all my jap bikes to the twin hi/lo American horns.

I'm glad you posted that link, John, because that highlights my reason for the post. If I'm looking for a #8 sound, sometimes you can end up with ones I absolutely HATE, like the #4 & #30 sounds - so when someone says high/low notes, it can mean 2 completely different things. I got to do more searches for musical stuff - still don't know which letter is high & which is low ..

EDIT: I'm over my head in this one. Thought it was just a simple question ..... apparently not! http://thinkzone.wlonk.com/Music/12Tone.htm

EDIT again: looks like I phrased the question wrong - should be .... in which KEY are most car horns. Looks like F for single, A/D for double.