Loouud horn (updated)

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Loouud horn (updated)

Postby denizen44 » Mon Aug 05, 2013 8:13 am

I don't use the horn often but when I do, I like it strong and loud, especially against *(/&?$*(/ texting drivers :smt013

I also felt the stock horn(s) didn't do this car justice, so I explored the world of very loud horns, many of which require pressurised air.
In the end I wasn't enthralled by air setups so I went for the next best thing:
a larger number of electric horns :twisted: :twisted: :twisted: :twisted: :twisted: :twisted: :twisted: :twisted: muahaha.

Why be content with the loudness of 3 tones when you can have 6, 7, 8 or more?
I found out just how many amps each of these horn units require, made a few calculations, and ended up with a 10-tone monstrosity which, despite being less loud than an air horn, packs quite a few decibels.
On paper, this is [email protected] (no BS), or about 4 times louder than the stock horn. Very much worth it in my opinion.
The resulting sound doesn't aim to resemble a train or anything, it just aims to be loud as hell (for an electric setup).

(below):
It seems some classic cars have PLENTY OF ROOM to install extra horns! :smt010 :smt010 :smt010

Image

but on a 1970LC, there are few suitable places they can be bolted on
(allowing the sound to go forward): :smt011

Image

I noticed however, that the center part of the header panel is essentially empty
(ground level, looking straight UP between the radiator and grille):

Image

and being just above the grille opening, it's pretty much the best spot for full-frontal-loudness.
Plus it won't significantly disturb air flow to the radiator.

Here is a list of the horns I used.

:arrow: One GM Delco 'C' sharp, 550hz,
:arrow: A set of two Stebel TM80 magnums, 410hz & 550hz,
:arrow: All three OEM horns with unknown frequencies (most probably 360,410,500hz)
:arrow: One GM Delco 'F' sharp, 360hz,
:arrow: One Dorman 9-1794, 360hz,
:arrow: A set of two Fiamm AM80s, 485hz & 510hz

The average estimated individual SPL is slightly above 109db.
The 2 Fiamms, and especially the Stebels, were utterly deafening during testing. Here's what they sound like(individually):

Fiamm AM80 twins:
https://vimeo.com/232403778

Stebel TM80 Magnums:
https://vimeo.com/232404500

Now imagine, the horn described in this thread includes BOTH these sets, plus 6 other units! :smt077

Now back to installation.
After removing the grille, I bolted all units securely with lock washers.
Had to craft a few custom brackets and avoided making holes in the frame by using existing ones.

Image
Image

These GM units tuned "DFAC", are used in the famous cadillac 'train-like' 4-tone horn. I used two units in my setup.

Image

The average current required by each horn is about 5-7 amps,
so a 12V 80A relay should be plenty.
This one was sold with a wired socket (not shown).

Image

These ANL fuses are great and easy to mount on my existing setup.

Image

Next I needed a beefy wire to carry the total load.
6-AWG should be plenty for a length less than 3 feet from the relay to the battery:

Image

This is the setup near the battery

Image

wired all horns together near the hood release handle:

Image

Here's the electrical diagram:

Image

Aaaaand here's a little video of the finished setup (including the final sound)!
(Yes, this was filmed before I put the insulation on the harness)
https://vimeo.com/232406050

Subjectively, in person the amount of loudness of this horn is slightly ridiculous.

beep.
:D
Last edited by denizen44 on Mon Sep 04, 2017 6:43 pm, edited 40 times in total.
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Re: Loouud horn

Postby Castrosua » Mon Aug 05, 2013 10:49 am

Thats enough to wake the dead! lol
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Re: Loouud horn

Postby bagged59 » Mon Aug 05, 2013 11:27 pm

i'll be using train horns that will be fed by the tanks from the air ride. i've seen some can reach 140db.
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Re: Loouud horn

Postby Dan Szwarc » Tue Aug 06, 2013 6:36 am

My 66 needs these horns. I like the idea of buying all different frequencies of horn and running them all in parallel. It must sounds really rich and full (can't view the video right now).

A truck horn or train horn is good, but all electric is the way to go.
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Re: Loouud horn

Postby thegermanfan » Wed Aug 07, 2013 9:40 am

A bit simpler and nearly as good: 2 Hella supertone horns (B133) achieve 118dB @ 2 meters distance! Power for those: 78W per horn. This means in total about 13Amps. Important: Always use the bracket that comes with the horn! The brackets are tuned for optimum resonance of the whole assembly. Bolted to a rigid mounting point and you'll blast the road!
For the relay I would have selected one with integral supressor diode to minimize the chance of electrical troubles.
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Re: Loouud horn

Postby John Cashman » Wed Aug 07, 2013 9:41 am

Great setup! Well done! I always added more electric horns on my everyday drivers 'cause I wanted to lay on them when some idiot needed it!( plus I had lots of them laying around from parts cars)
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Re: Loouud horn

Postby denizen44 » Wed Aug 07, 2013 10:19 am

Dan Szwarc wrote:It must sounds really rich and full (can't view the video right now). A truck horn or train horn is good, but all electric is the way to go.

I'm glad to see I'm not the only one who likes all-electric.
The sound is 'rich and full' all right, but of course you'd hate to be standing in front.
I mean, the sheer loudness is downright nasty, offensive, almost obnoxious....
(i.e. perfection!) :D

thegermanfan wrote:A bit simpler and nearly as good: 2 Hella supertone horns (B133) achieve 118dB @ 2 meters distance!

I saw those when I was shopping around... Did you ever actually hear them?
In my opinion, they don't sound AT ALL like they should be on a big car!! This is why I passed....
(sound starts at 20s):
Last edited by denizen44 on Wed Aug 07, 2013 3:34 pm, edited 1 time in total.
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Re: Loouud horn

Postby thegermanfan » Wed Aug 07, 2013 12:34 pm

Hella sound quality is not the best, I admit. Sound pressure and sound penetration is good.
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Re: Loouud horn

Postby Barry Norman » Wed Aug 07, 2013 12:49 pm

Denezin44, Love your horns !! My dad installed Ford Air horns ( 2 Trumpets )and a compressor behind the grill of our 67 Convertible when new ! He always liked the Cadillac horns but hated the stock lower frequency Lincoln sound. They would certainly get one's attention !
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Re: Loouud horn

Postby Dan Szwarc » Wed Aug 07, 2013 7:53 pm

Your 70 sounds like a train.
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Re: Loouud horn

Postby Castrosua » Wed Aug 07, 2013 7:53 pm

I just remember, i have two horns from a 69...hehe...the 72 is getting a louder voice hehe :twisted:
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Re: Loouud horn

Postby denizen44 » Wed Aug 07, 2013 8:37 pm

Thank you everyone for your fantastic feedback.
I just updated my first post above with 2 more videos of the loudest horn units.

Dan Szwarc wrote:Your 70 sounds like a train.

Ya think so? I just made a new video :D

https://vimeo.com/232406227
Last edited by denizen44 on Mon Sep 04, 2017 6:45 pm, edited 5 times in total.
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Re: Loouud horn (updated)

Postby Castrosua » Wed Aug 14, 2013 4:36 pm

That video is AWESOME!. The echo is priceless. Im really thinking of doing that on the 73 now :lol:
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Re: Loouud horn

Postby ekm330 » Wed Aug 14, 2013 10:31 pm

My 1961 Mercedes 220Sb had the loudest stock dual horns I have ever heard! Two Bosch dual pitch horns; hit them and get the hell out of the way! My 300 SEL 6.3 had town and country horns that you would opt between with a switch on the dash, but still, nothing like the '61! My '67 Lincoln with triple horns sounds like a cruise ship getting ready to set sail, kinda like this one (which is friggin' awesome!)

denizen44 wrote:



But for me, no car will have a better horn setup than that of The Car :grin:

The Car.jpg


http://fsa.zedge.net/dl/ringtone/cdbde753b1d6340ce09f3d5f952d057d/the_car_horn.mp3?ref=www&type=mc
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Re: Loouud horn (updated)

Postby briven95 » Fri Aug 16, 2013 11:09 am

Nice Doppler effect on the drive by!
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