The High Amplitude Multi-Roll (HAMR) surround allows a maxi- mum, linear cone excursion for high SPL, while maintaining full control over the diaphragm at any excursion stage for high sound clarity.
Alpine uses high-power neodymium magnets for the new R-Series speakers. This means the magnet can be much smaller compared to traditional speaker designs, allowing for a much lower mounting depth and overall space requirement inside the car door.
The all-new voice coil is made of Aluminium, compared to the regular copper wire coils. The benefit is higher clarity especially in the mid-high frequency area.
Alpine has developed a Wave Guide for the cone to further improve sound quality. Mounted over the centre cap, it prevents phase distortion of the sound waves from the diaphragm, and focuses the sound for optimum clarity.