JBL GTO6429 4"x6" 2-way car speakers at Crutchfield
JBL GTO 426 4" Two-Way Car Speakers Harman Set Range Rover Classic Rear Cargo | eBay
Amazon.com: JBL GTO Series Premium 4 x 6 Inches Co-Axial Speakers Pair with Patented Plus One Woofer Cone, Silk Dome Tweeters - Set of 2 Bundled with Earbuds : Electronics
Amazon.com: JBL GTO939 GTO Series 6x9" 300W 3 Way Black Car Coaxial Audio Speakers Stereo : Electronics