View larger Specifications 6.5 Inch 350 Watt 3-Way SpeakerImpedance: 4 OhmsFrequency: 65Hz – 20KHzSensitivity: 90 dB @ 1 W/1 mMidrange: 1 inch Mylar ConeMounting depth: 2.13 View larger Cone – Poly Injection A substance called Polyurethane — categorized as a Polymer — is a resilient, flexible, and durable manufactured material that can take the place of paint, cotton, rubber, metal, or wood in many uses across virtually all fields. It can be hard like fiberglass, squishy like upholstery foam, protective like varnish, bouncy like rubber, or sticky like glue. In the case of our cones, this material allows for maximum flexibility that produces great sounding speakers that last a long time. View larger Tweeter – Piezo Piezoelectric tweeters have several advantages over conventional tweeters. They are resistant to overloads that would destroy most high frequency drivers and they can be used without a crossover due to their electrical properties. The active element is a piece of polarized material. View larger Surround – Butyl Rubber Butyl rubber is a synthetic substance valued for its chemical inertness, impermeability to air, and the ability to endure exposure to many types of weather. Butyl rubber has many different applications. It can be used for anything from sports equipment to automotive parts to the medical industry and more. We use them for the surrounds that connect the cone to the basket. The Butyl Rubber Surround in our speakers can take a lot of abuse without quitting on you. View larger View larger Voice Coil – Aluminum Our speakers are capable of elevated temperature strength and fatigue properties that will increase the performance and efficiency of heavy duty play time through lower weight and higher operating temperatures. Rear of PG653 View larger