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Amazon.com: HERTZ SPL Show Series SX-690-NEO 6x9 Three-Way SPL Coaxial Speakers with Neo Magnets and UV/Waterproofing : Electronics
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Amazon.com: HERTZ Mille Pro Series MPX-6903 6x9 Pro Audio Three-Way Coaxial Speakers (Pair) with Grilles : Electronics
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Hertz SPL Show SX 690 NEO SPL Show Series 6"x9" 3-way car speakers — built for SPL competition at Crutchfield
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