Snail Vs Disc Horns
ELECTRIC HORNS
Horns are broadly classified as electric type or air type horns. Electric type horns are compact and efficient, and thus are used widely in ordinary passenger cars. Because air type horns have a large body and require compressed air, their use is restricted to large trucks and so on.
Electric horns can be divided by timbre into two types: the Flat Horn with a sharp and stimulating sound also called Disc Horn, and the Trumpet Shaped Horn with a softer sound also called Snail Horn. Because electric horns are not actuated externally, but instead adopt a mechanical self-excited vibration system, they excel in cost and are widely used.
Electric horns are constructed of a diaphragm that generates sound, an armature (moving attraction part) connected to the diaphragm, a coil to generate the driving force, and a point (contact) that controls the flow of current through the coil. In addition, flat horns also have a vibrator that uses resonance to amplify sound, while trumpet horns use a trumpet to amplify sound in the same way.
How Horn Works
When the horn switch on the steering wheel is pressed, current flows from the battery through the coil, magnetizing the core and generating magnetomotive force.
- The armature is attracted, and the diaphragm moves.When the armature is attracted to a certain position, it presses the point down, and the contact opens.
- When the contact opens, current flowing through the coil is interrupted and the attraction disappears. The force of the diaphragm spring returns the armature, and the contact once again closes.
- This action is repeated approximately 400 times per second to vibrate the diaphragm and generate sound. The number of repeats is termed the fundamental frequency, and this determines the pitch of the sound (tone).
Differences Between A Disc Horn & Snail Horn
Flat Horn /Disc Horn
- Flat horns use a vibrator to amplify sound according to its resonance.
- Flat horns are constructed so that the air gap is narrow, and the armature collides with the core. The impact force generated from the collision creates higher harmonic components that resonate at a number of times the fundamental frequency, and this energy excites the vibrator, making it resonate and amplifying the sound pressure.
- Flat horns amplify by resonating this kind of mechanical collision force, so they have a sharp frequency characteristic and highly efficient amplification, making them the most compact type of horn. In addition, they have a sharp and stimulating timbre that is very effective for warnings
Trumpet Horn / Snail Horn
- Trumpet horns use the resonance of a trumpet to amplify sound.
- Because there is no need for the armature and core to collide as in a flat horn, trumpet horns have a wide air gap. The repeated vibrations of the diaphragm are converted to sound in the air chamber, and these sounds amplify as they resonate along the length of the trumpet.
- In contrast to the sharp peak frequency characteristic of flat horns, trumpet horns have wide and gradual frequency components, resulting in a soft-timbered sound
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Horns: Disc vs compact trumpet
- Thread starterUG_Passat
- Start date
FIAMM is a good alternative and upgrade from factory, disc and horn.
Really?...cause the ones (trumpet type) on my '05 4runner are pretty loud. In fact, the are two on the 4runner that make a very loud dual tone...sorta like the old American cars from Buick and Cadillac. I even got a pair from the salvage yard from wreck 4Runner and wired them into my '08 Sorento which had the disc type horns. Those made more of higher pitched 'beep' sound than the loud 'honk' sound of the 4Runner horns.I like the sound and loudness of Hella Supertones, but... more stuff is exposed, and tends to get rusted away....
compact trumpets are protected by its trumpet snail shell...
What say you? I find the Toyota trumpet horns to be too wimpy
So, now my Sorento has 'horn attitude'. Before it was like...excuse me, pardon me, hey....now it is more like GET OUTTA MY WAY, UP YOURS, MOVE IT OR LOSE IT!
Properly designed trumpets are likely more efficient than an open diaphragm, but that’s only if there’s any actual engineering behind the design. Trumpet shape and curvature also can highly influence the sound between shrill, middy and deeper bodied.
my favorite is one that doesn’t sound good. I had a mismatch grouping of a single oem, one I found on the curb, a Valentine’s Day gift from my wife, and an ooga horn. It wasn’t loud, but sounded like vomit in a tin can. It absolutely got attention without being loud.
my favorite is one that doesn’t sound good. I had a mismatch grouping of a single oem, one I found on the curb, a Valentine’s Day gift from my wife, and an ooga horn. It wasn’t loud, but sounded like vomit in a tin can. It absolutely got attention without being loud.
Wire in a back-up alarm in parallel with your horns. It gets attention!!
Cadillac quad-note horn
Aside from a true air horn arrangement, the GM/Cadillac 4-note horns are widely considered to be the best "budget" horn upgrade. I've done the swap, it doesn't disappoint.
Aside from a true air horn arrangement, the GM/Cadillac 4-note horns are widely considered to be the best "budget" horn upgrade. I've done the swap, it doesn't disappoint.
Those may be hard to find...at least at a salvage yard...the one local to me, all those horns have been 'harvested'.
Finding all 4 notes can be tricky... I believe the notes were A, C, D, and F. Conveniently enough, GM stamped the note right on the horn itself. From what I've seen, almost all of the 90's GM vehicles use some combination of those 4 notes. Lower end cars had dual note horns, many of the Buick's got a 3 note setup, and Cadillac's got the 4 note.
Here is an A, D, and a C, with the C circled.
Attachments
I like the sound and loudness of Hella Supertones, but... more stuff is exposed, and tends to get rusted away....
compact trumpets are protected by its trumpet snail shell...
What say you? I find the Toyota trumpet horns to be too wimpy
PIAA products are overpriced. But their auxiliary lights are great though
Hella horns are a lot more affordable as an upgrade
$20 From amazon for the dual trumpets from Hella
Add $8 for the harness
and maybe a buck or 2 for some ring terminals.
Still a lot cheaper than the dealership price, other than scouring junkyards.
Yes, I could have bought the Toyota-specific ones, but I'd try to see if I like some blue peeking through the grille, like the hybrid blue trim badge.
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I had a 1995 Cadillac Fleetwood Brougham a few years ago that I’ve since sold. That car had its own, unique horn tone that was unlike any of the other cars I had. I never looked to see if it was dual, three or four tones. If you can get that setup, they are the best, elegant sounds. 😁
My Charger has dual tone horns, and the agency that owned it before me unplugged the lower note horn for whatever reason. Not cut and removed, just unplugged. My horn sounded cheap for a while until I found that wire and plugged it back in. Much better, but the Cadillac horn is still better. 😎
My Charger has dual tone horns, and the agency that owned it before me unplugged the lower note horn for whatever reason. Not cut and removed, just unplugged. My horn sounded cheap for a while until I found that wire and plugged it back in. Much better, but the Cadillac horn is still better. 😎
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