Kicker 40PS692 6"x 9" 2-way speakers (2-ohm) for use in motorcycles, boats, and ATVs at Crutchfield
Amazon.com: BLACK DIAMOND DIA-69.3 6 x 9 Coaxial Car Speakers 3 -Way 270 Watts 4-Ohm Car Audio Stereo System 6x9 Speakers - Removable Grill Included (Sold in Pairs) : Electronics