BMW 3 Series E46 98-05. Kicker 17cm Front Door Speaker Upgrade Kit. 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 6-3/4-Inch Coaxial Speakers are the perfect factory upgrade. These coaxial speakers are an excellent way to upgrade your sound. A stamped steel framework supports a rigid polypropylene cone with EVC (Extended Voice Coil) technology, for the best sonic quality and deep, rich bass. These CS speakers work best with 100 watts of recommended power. See below for more details. Speaker Design – 2-Way – Woofer – 6 3/4″ (165 mm) – Tweeter – 1/2″ (13 mm) – Rated Impedance – 3.3 Ohm – Peak Power – 300 W – RMS Power – 100 W – Sensitivity – 90 dB 1W, 1m – Frequency Response – 40-20k Hz – Mounting Hole Diameter – 5 1/2″ (140 mm) – Top Mount Depth – 3/16″ (4 mm) – Bottom Mount Depth – 1 13/16 (47 mm) – Grilles – Included – Tweeter Magnet Material – Neodymium – Tweeter Dome Material – PEI (Polyether Imide) – Tweeter Design – Balanced Dome – Woofer Cone Material – Polypropylene – Woofer Surround Material – Polyester Foam.
