Alpine S-Series Coax speaker 5 1/4"

5-1/4" (13.5 cm) Coaxial 2-Way S-Series Speakers - S-S50
The S-Series delivers amazingly high performance for this class of speaker. They boast the world’s 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 used on the X-Series.
Peak Power: 170 Watts
RMS Power: 55 Watts
Frequency Response: 80 Hz - 22 kHz