Let's start from the beginning.

All Bluetooth intercom devices require an adaptation for mounting, they are not built or tested on all helmet models, whether Jet, modular or full face. They are basically standard and fit all helmet models. Very often we hear complaints about the audio performance. It all depends solely on the assembly.

Initial check before mounting the intercom to the helmet.

Not all motorcycle helmets are well designed to mount a Bluetooth intercom, even if they have the predisposition it is not necessarily in the right place.

Let's see why and the factors that negatively affect the assembly:

A motorcycle helmet is basically composed of three main components: outer shell , inner hood , lining .

Outer shell: the enclosure containing the other 2 components, the new regulations require that for every two measurement sizes the shell is larger, this to maintain the thickness dimensions of the inner shell.

Inner shell: The inner lining in pressed polystyrene is basically the part that saves our lives. It too has various measures with respect to sizes.

Coating: The fabric part that makes the helmet comfortable, which is in direct contact with our head.

Unfortunately, very often we verify that many helmet models are designed to contain a Bluetooth intercom efficiently only on a series of measures, such as ML which are classically the best-selling. But we also verify that many helmet models are poorly designed on all sizes.

We also add that not all heads are the same, regardless of size or measurements, large ears, small ears, elongated head, round head, etc. etc.

Preliminary check for speaker placement.

This verification is the most important, as a perfect assembly has multiple advantages for operation:

  • Lower listening volume, consequently less battery consumption, better audio quality at high speeds.
  • Reduction of external noises, prevents annoying aerodynamic hisses and makes the journey more comfortable.


  • Put the helmet on in the riding position (the position you think is the most similar to your driving style).
  • Insert the index finger between the helmet and the head, at ear level.
  • Place the tip of the index finger inside the ear.
  • Then without moving your hand and finger, flex the index finger from the nail side towards the helmet, press hard on the padding in order to leave a mark. That's the place to mount the speakers.

Regardless of whether it is inside the predisposition or not, the speakers must be placed there. If you are buying a new helmet, check this important parameter before choosing the model.

Verification of assembly:

Once the position of the speakers has been marked, another main factor is the distance between the earpiece and the ear, the closer it is, the more efficient it is.

In most Bluetooth intercoms, spacers are provided in order to bring the speakers closer to the ear.

Spacer bearing assembly diagram.


In the event that the positioning of the speaker is not in the predisposition but in the padding it is sufficient to make a small incision at the base of the padding, remove a small layer of sponge, as much as the thickness of the speaker, once positioned put two points with needle and thread to close the opening. The speaker will remain stationary inside the dede you have created.

In other cases, if the speaker position is between the padding and the predisposition, it will be sufficient to make the incision, remove all the sponge that prevents assembly, place the excess fabric on the base of the helmet gluing it with glue to tissues, then position the speaker, always checking that it is not too far from the ear.

In summary, the speaker should be as close to the ear and as centered as possible.

Passenger or conference rider Bluetooth transmission difficulties (microphone)

  • Make sure the microphone is oriented correctly towards your mouth.
  • Check that the distance does not exceed 2cm.

Background noise in transmission.

  • The above checks are valid.
  • Jet or Modular helmet, replace the sponge with a high-density one
  • Full-face helmet, replace the microphone with the arm and, if necessary, also the sponge.

Why do we have to mount an arm microphone and not a wire microphone on the full-face helmet?

  • Again for a problem that all helmets are not the same, it is possible to have a helmet that has a considerable distance between the mouth and the chin guard, in this case the microphone reception will be inefficient. By mounting an arm microphone, once we put on the helmet we would have the possibility to bring it closer to the mouth.

Problems with Bluetooth intercom voice commands.

Most problems are caused by the microphone and its mounting, read the guide above.

Another cause, the most common, is inherent in the pronunciation of commands, they must be pronounced correctly in the set language, dialectal cadences and / or abnormal tones are not recognized.