Since its founding more than 70 years ago, JBL has been a magnet for all generations in the audiophile field. For months, JBL acousticians, mechanical experts & software developers have changed & optimized all the audio elements of Cardo intercom systems. The result is the new 45 mm loudspeakers, which offer a sound quality never seen before in biker communication systems. The 45mm audio set is compatible with any communication device with a standard 3.5mm port. Pack Talk & Freecom owners enjoy even better sound quality when installing & enabling the specially designed JBL firmware. Achieving good audio quality inside a helmet is a challenge. The wind, the road, the engine & the type of helmet influence the transmitted frequencies. Taking all these aspects into account, the 45mm speakers deliver a sound quality that only a large speaker can reach, in a 42mm slim base that is compatible with most modern motorcycle helmets.