Alpine S-S69 - 520 Watts a Pair 2 Way 6" x 9" Car Van Parcel Shelf SpeakersAlpine S S69 520 Watts a Pair 2 Way 6x9" Coaxial Car Van Parcel Shelf Speakers The S Series delivers amazingly high performance for this class of speaker. They boast the worlds first use of a CFRP diaphragm (Carbon Fiber Reinforced Plastic), which has the ideal balance of hardness and light weight, for extremely clean and accurate sound. They also feature a larger voice coil than previous types for higher driving power, and the same HAMR surround as