The Alpine R-S65C.2 is a 6 x 9 inch coaxial 2-way speaker combining a 1 inch ring radiator tweeter and a hybrid multi layer woofer with neodymium magnets, large aluminum voice coils, HAMR surround, DX Ring, and wave guide. It handles 100 Watts RMS and 300 Watts peak with a frequency response of 65 Hz to 29 kHz and 4 ohm impedance; features shallow 59 mm mounting depth, swivel tweeter with flush or surface mount options, bi-amp ready design, 4-step tweeter level crossover, and includes a mounting adapter kit.