F Series was developed for audiophiles and music lovers. The high end car audio system uses drivers adapted from several of our most popular high end home audio speakers. The end result is an incredibly detailed and balanced acoustic system for car audio. Composite Kevlar woofers assembled in die cast frames ensure minimal resonance and a broad and balanced response. Each driver has been treated to prevent water and moisture damage. Two separate tweeter options were adapted for the system; F1500/F1600 systems using smooth sounding 28mm dome tweeters; FR500 / FR600 systems using newly developed Isodynamic ribbon tweeters. F Series integrates the best of Isodynamic ribbon technology and composite Kevlar cone technology into a true high fidelity car audio series. A true live concert experience can be felt when listening to high quality recordings. Imaging is accurate and music is detailed, smooth, and natural sounding.