The woofers have a large, 35-millimeter (mm) voice coil which allows for more coil windings to fit in the gap. This results in greater heat dissipation and increased power handling, for superior control and output.
The R-Series speakers incorporate Alpine’s patented High-Amplitude Multi-Roll Surround (H.A.M.R.) for control and accuracy. The component models use a crossover with an in-line, passive design and reduced footprint, which contributes to easier installation.