Infinity PRIMUS 503CF Primus Series 5-1/4″ 2-way Component Speaker System, Pair If you are looking to upgrade your driving experience with amazing audio, Infinity Primus has you covered with their patented Plus One woofer cone and edge-driven dome technology. Infinity’s sound signature brings you lifelike vocals, crisp cymbals, and well-defined bass. Plus, their rich all-black color scheme seamlessly integrates into the car interior. Their radial starburst pattern is inspired by the icon of a supernova, punctuated with the mirror-like copper mobius strip logo. Features – Plus One Woofer Cone Architecture Edge-driven Silk Dome Tweeter Engineered to Fitment and Easy Installation Vented Basket Frame Design for Cooling Competitively Tuned In The Box – 2x Speakers 2x Tweeters 2x In-line crossovers 8x Screws for speakers 6x Screws for tweeter kits 8x Speed clips 2x Threaded flush-mount adapters 2x Plastics locking nuts 2x Surface-mount cups 2x Starfish tweeter mounts 2x Foam gaskets 2x Brand stickers 1x Owner’s manual General Specifications – Woofer: 5-1/4″ Polypropylene Driver Tweeter: 3/4″ Silk Dome Power Handling: 50Wrms, 150W peak Sensitivity (2.83V@1m): 91dB Frequency Response (-6dB): 75Hz – 20kHz Nominal Impedance: 3.0 ohms Crossover Point: 5kHz@12dB/octave