These Seachoice 6 ½-In. 2-Way Full Range Dual Cone Speakers deliver powerful, premium-quality audio you can enjoy on the water. These weatherproof speakers deliver 180 watts max with 90 watts RMS power handling per pair. They offer 80 Hz to 20 kHz frequency response and 89dB sensitivity. The woofer cone is made of polypropylene, with a rubber surround. Sold in pairs, each white speaker installs in a hole with a diameter of 5.47-In./139 mm. The mounting depth is 2.24-In./57 mm. Seachoice is committed to delivering quality marine accessories and OEM replacement parts to satisfy fishing, boating and watersports enthusiasts worldwide. Seachoice is run for and by boaters, offering a wide-ranging product line while remaining affordable.