Pioneer 6 3/4" (17cm) 300Watt 2 Way Coaxial Speakers – Auto Sparky
Audiopipe CSL600 6-3/4″ Component Speaker System 175W Rms / 350W Max 4 – RecklessCarAudio
Top 5 Best 6 3/4 Speakers - YouTube
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Rockford Fosgate P1675 Punch Series 6-3/4" 3-way car speakers at Crutchfield
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CS 6.75" (165 mm) Component Speaker System | Car | KICKER® Audio UK
BOSS Audio Systems B69LED Elite Series 6 x 9 Inch Car Audio Door Speakers - 500 Watts Max, 3 Way, Full Range, Coaxial, Sold in Pairs, Hook Up To Stereo and Amplifier, Tweeters
Kenwood KFC-X174 6-3/4" Coaxial Speaker System, 240W Max Power - Creative Audio