Blaupunkt THx-402 4-Inch 2-Way Thin Mount Coaxial Speakers 4" 2-Way Coaxial (pair) 40 watts RMS (160 watts peak power) Injected Polypropylene (IPP) Woofer Cone with Mylar (PEI) Tweeter Thin Mounting Depth: 1.42" Frequency Response: 80-22,000 Hz