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

Product Information

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 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 From “E.Z.” (August 2015): “I have a working Stebel Nautilus Compact on my NT700VA. It sounds exactly like the Denali on your .mp3 file!

For best results, the Denali horn should really be mounted so that the dual trumpets point forward, not to the side. This complicates the process of finding a suitable mounting position, because it means the widest part of the horn must face forward. Fitment Note: Add our BMW wiring adapter ( DNL.WHS.10100) for plug & play installation to BMW motorcycles. 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. 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.]The hardest part of dealing with the Nautilus or Soundbomb is mounting it on the motorcycle. These are big horns and most motorcycles have very limited spaces underneath the fairing or around the engine for mounting such a monster. A motorcycle horn is not just a federally mandated accessory or a nice-to-have. And a horn loud enough to get the attention of errant and careless drivers is not just a luxury. For daily riders, touring fans, and city commuters, an attention-getting horn is much, much more—it’s a necessity. 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…

In fact, we wouldn’t be surprised to learn that the Soundbomb is made by Stebel or by ex-Stebel designers. When I opened up the fairing, I saw that the tech connected the horn directly to the OEM horn wiring. When I installed the wiring kit, voila! It worked like a charm. So much for professional installation!

Step 3: Mount the DENALI SoundBomb Mini

Fitment Note: Add our BMW wiring adapter DNL.WHS.10100 below for a plug & play installation to BMW motorcycles. 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. Twisted Throttle said the horn was designed to be more reliable than the Stebel version, while still providing a loud air horn sound.

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. Some motorcycle owners have opted for the huge Stebel Nautilus Max (review) or more likely, the Stebel Nautilus Compact (review) as their replacement horn choice. The Soundbomb (probably not the best name for a product here in our crazy 21st Century) looks nearly identical to the Nautilus Compact.Twisted Throttle also sells a wiring harness for it and various length/configuration coated steel attachment parts. I acquired all the kit I needed from TT, and the install went smoothly. If they did, we guarantee that just about every owner would go for the option, adding to manufacturers’ and retailers’ profits. Currently, the manufacturers are leaving money on the table. 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.”