Alpine R2-S65 Next-Generation R-Series 6-1/2" 2-way car speakers 1003 The CompRT 10-inch Subwoofer is

The CompRT 10-inch Subwoofer is an all-weather thin subwoofer with a pair of 2-Ohm voice coils

you'll need PAC's MS-FRD1 adapter to maintain that functionality

6"x9" polypropylene/glass-fiber/mica woofer cone with High-Amplitude Multi-Roll surround

The Power T500-1bdCP is a 500 Watt mono amplifier featuring Constant Power delivering up to 25% more power across all impedance loads

K2 technology: improves sound of digital music files and CDs

Alpine R2-S65 Next-Generation R-Series 6-1/2" 2-way car speakers 1003 The CompRT 10-inch Subwoofer isProduct highlights: 6 1 2" 2 way car speakers (pair) glass fiber woofer cone with High Amplitude Multi Roll surround 1" magnesium hard dome tweeter handles up to 100 watts RMS (300 watts peak power) frequency response: 65 40,000 Hz grilles included