The Harmonic Audio System is a high-end car speaker and audio system designed for music enthusiasts who value quality sound. The system includes JBL GTO 939 6x 9" GTO Series 3 Way Car Speakers and JBL GTO 629 6.5" 360W GTO Series 2 Way Car Audio Speakers, both featuring carbon-injected cone material and three-ohm voice coils that allow compensation for added resistance by thin factory speaker wiring. With patented Plus One woofer-cone technology, the speakers deliver increased output without requiring extra power. The system also includes adjustable tweeter level attenuation, high-temperature voice coil, and vented magnet motor structure that cools the voice coil. Protective speaker grilles are included.
JBL GTO939 6x9" GTO Series 3 Way Car Speakers. JBL GTO629 6.5" 360W GTO Series 2 Way Car Audio Speakers. Carbon-injected cone material. Three-ohm voice coils allow compensation for added resistance by thin factory speaker wiring.
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