Amazon.com: JVC CS-DR421 4" Inch Car Speakers, 220 Watts of Power, 110 Watts Each, 2-Way Coaxial, Built Tough, Perfect Factory OEM Replacements, Sold in Pairs : Electronics
JVC drvn DR Series 4-Ohm Subwoofer (12 Inch) in the Mobile Audio department at Lowes.com
Best Buy: JVC 50W x 4 MOSFET In-Dash CD Deck with MP3 Playback and Detachable Faceplate KD-R210
JVC DRVN DR Series 6" x 9" 4-way Speakers Pair Black CS-DR6941 - Best Buy
JVC KS-DR1004D Class-D Compact 4 Channel Class-D Marine Power Amplifier