JL Audio"s EvolutionTM ZR series component speakers will make your music sound its very best, whether you like rap, rock, reggae, or classical. JL Audio obsessed over every little detail of their ZR series components, so these speakers will reproduce the most complex musical passages with lifelike accuracy, even in the unforgiving mobile environment.The ZR650-CSi component system starts with 6-3/4" component woofers that use the same bass-enhancing technologies found in JL Audio"s subwoofers. You"ll enjoy consistent sound reproduction, along with impressive low-frequency depth and dynamic range. High-performance 1" aluminum dome tweeters bring out the subtle details in your music so you get a clear sonic picture of all the instruments in the stereo mix. Special design butyl rubber surrounds eliminate the ringing that can plague lower-quality aluminum tweeters.JL Audio built the ZR Series crossovers using only the finest electronic components. These precision networks feature 5-level tweeter and 4-level midrange presence settings so you can achieve 20 different tunings to perfectly match your vehicle"s acoustics and your tastes.Note: JL Audio describes this model as a 6-1/2" speaker. Most manufacturers designate this same frame size as a 6-3/4" speaker. For simplicity"s sake we list it as a 6-3/4" speaker.