Horns have a long tradition at Hella. Hella has been developing and manufacturing acoustic signal units on the highest technical level for almost 100 years. Hella includes the two 12V Supertone horns each with a mounting bracket, a relay and wiring instructions with the Supertone horn kit.

Disc horns make a relatively hard sound which is radiated mainly forwards. This achieves good penetration of the traffic noise over a great distance. The sound pattern works best as a set with one high tone horn and one low tone horn.  Hella uses a combination of low tone (300Hz) and high tone (500hZ) disk-type horns to project a powerful 118dB sound that is designed for highway use.  Stock horns typically have an output of 97 dB. The decibel scale is logarithmic and therefore the sound pressure doubles for every increase of 3.3 points, i.e. a horn with 118 dB produces approximately seven times the sound preasure as a stock horn.

Supertone horns are particularly suitable for extreme conditions since they have a greater penetration force due to their size and more powerful electrical drive.  Quality is extremely important at Hella. Safety products such as horns demand top precision and reliability. Hella products not only comply with the strict legal regulations but also with the much more demanding requirements made by vehicle manufacturers and the aftermarket. It goes without saying that all Hella horns have ECE type approval.