4 Piece 300DB Loud Train Horn for Truck Electric Snail Horns 12V High and Low Tone Waterproof Auto Air Single with Brackets Screws Car Motorcycle

It’s loud and very good sound

I purchased this product to upgrade the horn on my classic motorcycle (2007 Yamaha VStar 1300). To compare this horn with my bike's stock horn I used a Tadeto SL720 sound meter placed 1 foot from the horn. Both of the "300 dB" train horns were installed for effect.Granted, the upper range of the SL720 is purported to be 130 dB, but I was still greatly disappointed by the output level of this "loud" horn. The tone was lower than my stock horn, but the sound output was no louder than the stock horn. (See the picture for readings.) Don't buy this horn: it's a bulky replacement, but not an upgrade.

Very loud

I ordered these because they were advertised to be train horn level.; They are not.. They are barely louder than my original car horn. There are 2 sets of horns with a high and a low tone. Not loud at all.From the product item description on Amazon:About this itemAmple quantity: you will get 4 pieces 300db electric snail horns with 4 pieces brackets and 4 pieces screws, ample quantity and sufficient accessories will satisfy your daily installed requirements, giving your car a loud sound to warn others and avoid some collisionsFrom as google search for "loudest db possible"194 dBStrictly speaking, the loudest possible sound in air, is 194 dB. The “loudness” of the sound is dictated by how large the amplitude of the waves is compared to ambient air pressure. A sound of 194 dB has a pressure deviation of 101.325 kPa, which is ambient pressure at sea level, at 0 degrees Celsius (32 Fahrenheit).Typical sounds and their levels:Listening to music with your headphones at the highest volume 96 to 110 dBRock concerts, parties, or nightclubs 95 to 115 dBSirens from a fire truck, police car, or ambulance 110 to 129 dBFirecrackers and fireworks 140 to 160 dBLoudest train horn 175 dbYou can't increase the noise level by adding multiple sources together.Is someone lying here?

But it's not as loud as I was hoping... I mean it's definitely louder than my Japanese kawaii sounding horns but it's not giving truck-kun vibes.

Very cheap plastic! The "red" is ONLY on the underside, so it's not very visible. There are ZERO markings like in the pictures, there are no "Low" or frequency labels, like the pictures show. They are ALL wimpy, high pitched horns that make the Road Runner "meep-meep" sound manly!300db, I knew right off the bat that this was NOT true, but I ignored my instincts and bought these anyways. They MIGHT be 60 to 75 dB's so the whole lot of 4 added together would add up to 300dbs, but that's not how sound works!Definitely NOT train sounding either, like I said they're high-pitched and VERY wimpy sounding.Run.... Run away!

Really a great product.

First of all I would buy to point out that I do suffer a bit of the blame for not reading some of the reviews before purchasing this item. However, these horns are no louder than the horns that were already on my truck and they do not sound at all like a train horn. Furthurmore 300db is not realistic. After some research I found out that the Apollo 11 launch was around 312db this company should not be able to make that claim. They were a bit of a pain to get to on my truck and I had to do some rewiring because the connections were different did what I had on my vehicle. I am certainly considering returning them, and I am extremely disappointed in the false advertising for this product.