The C5-570X, along with the component equivalent C5-570, are the largest speakers available in the C5 evolution line. The 5x7" woofers have a mineral filled poly-propelene cone, Butyl rubber surround, 1" voice coil and are mounted in a cast alloy frame using JL Audio's patented Elevated Frame Cooling. The 3/4" silk soft dome tweeters are powered by a Neodymium Magnet and use ferrofluid cooling and damping. This tweeter is universal accross the entire C5 series. The two included 2-way crossover networks use a 1st order low-pass filter and 2nd order high-pass and comes equipped with a 4-position adjustable tweeter output level, 3-position midrange presence control and features Polyswitch tweeter protection. Much like the tweeter, this crossover is used in all the C5 speaker sets. The C5-570x is designed to be mountable in 5x7" and 6x8" factory locations. Unlike the other sized sets in the C5 line, speaker grilles are not included.