Denali SoundBomb™ Mini Electromagnetic Low Tone Horn 113dB Motorcycle Horn

Product Information

The Soundbomb (probably not the best name for a product here in our crazy 21st Century) looks nearly identical to the Nautilus Compact. The Soundbomb horn has a hefty 20 Amp draw. It measures about 138 mm wide, 116 mm tall and it’s about 88 mm deep. It also comes with a relay, but as always, we used a pre-made horn relay wiring harness (review). Sound Output

Some motorcycles horn circuits are not capable of powering this 5 amp horn. If your horn circuits' max amperage is less than 5 amps, or if you are unsure, simply add our plug-n-play harness to bypass the horn circuit and draw power directly from your battery. Also, add our standard relay as this is not included with the horn harnesses. Product Specs The instructions note that “the horn should be mounted so that the cylinder is vertical with the horn facing down. There should be no more than a 25 degree variance from the vertical position.” There’s nothing like going through all the trouble of mounting a big Nautilus — no easy task — and having it fail before you get the bike out of the garage. Oh well… Producing a massive 113 decibels of sound, the SoundBomb can be over twice as loud as a standard motorcycle horn!Sometimes, though, there’s no enough room under the hood for a one-piece horn, and that’s where the DENALI SoundBomb Split comes into its own. It’s the same basic horn as the SoundBomb Compact only with the 12-volt air compressor and the horn itself separated by a supplied durable hose. This feature allows installers to locate each component where they make the most sense, without compromising performance. Like the SoundBomb one-piece, the SoundBomb Split is available with a plug-and-play wiring harness that includes a water-resistance relay and high-quality wiring with pre-installed connectors. But, using the Extech dB meter, we measured 118 dB at three feet for the Soundbomb, a good showing. Securely attach the SoundBomb Mini to the chosen location on your motorcycle. Ensure that it is positioned in a way that maximizes sound projection while avoiding any interference with other components and potential direct spray from road spray. It is recommended to not over tighten the bolt on the rear of the SoundBomb Mini. The horn should be secure, but should give way if rotated with pressure. Tighten the M6 nut to no more than 6.5 ft.-lbs. If the horn is too tight, it might not sound correctly. As you can see from the photos below, the new mounting position puts the horn in the correct orientation and actually works better than the original mounting, because the wires can be semi-hidden behind the horn body.]

Fitment Note: Add our BMW wiring adapter ( DNL.WHS.10100) for plug & play installation to BMW motorcycles. We wanted to locate the horn far enough away from the exhaust but as close as possible to the engine. This wouldn’t work on the right side of the F 800 S, due to the exhaust location. The mounting problem is even more complicated because there’s just a single bolt location on the horn body that can be used for mounting. This is a cast metal cutout that fits the 8 mm hex head bolt that comes with the kit. At 113 decibels, the distinct low-tone sound from the DENALI SoundBomb Mini is over twice as loud as a typical 100 decibel disc horn. The two of us spent quite a bit of time trying to find a good location to mount the Soundbomb horn on the BMW F 800 S. We tried to mount the horn behind the fairing and also in front of the exhaust pipes, on the side of the engine and even towards the rear, but nothing worked.The SoundBomb Original is a powerhouse of a horn, producing an ear splitting 120 decibels of sound. If you want to be heard on the road or trail, this is the horn for you. Because the SoundBomb draws 20 amps of current, we suggest wiring directly to your battery using our plug-n-play wiring harness! All of the Nautilus horns were mounted using a high-quality relay harness and each horn failed almost immediately. You can hear the sound of a dead Nautilus in the linked .mp3 sound file library below. I have Clearwater Glenda lights (review) on my bike, and with a little wiring, soldering, and Clearwater’s instructions, the Glendas go to maximum power if the horn is hit. A nice feature which is standard on the larger Clearwater lights, but not the Glendas.

But, we had to come up with our own custom mount for a BMW F 800 S, just to show it can be done with some ingenuity.Designed to be a direct Plug & Play upgrade from your factory horn, requiring no additional relay or wiring harness. So we cut a longer (18 cm) length of aluminum, drilled the two holes as noted below and re-installed the horn, this time in the correct orientation. Producing amassive 113 decibels of sound, the SoundBomb is over twice as loud as your standard motorcycle horn!