The CS Series delivers remarkable performance and ultra-clean bass, utilizing a heavy-duty motor/magnet structure featuring EVC (Extended Voice Coil) technology not found in stock speakers. They use polypropylene cones with tough, ribbed, UV-treated surrounds for precise linear excursion and reliability.The CS 4-inch coaxial speakers are the best way to upgrade your speakers. These coaxial speakers are a significant upgrade in your sound. Their stamped steel framework supports a rigid polypropylene cone with EVC technology, for the best sonic quality. Using zero protrusion PEI tweeters ensures you get every bit of clarity you need, without interfering with factory grilles.Geek Squad~ Installation RecommendedVisit your local Best Buy store for more information.

Only at Best BuyExperience crystal clear sound for music and movies without the tangled wiring with this Insignia Bluetooth speaker system. A multifunctional control pod puts volume and balance in the palm of your hand, and the included subwoofer delivers spot-on bass. This Insignia Bluetooth speaker system is compatible with enabled smartphones and tablets.