Tweeter Magnet Material - Neodymium. - Tweeter - 1/2" (13 mm). - Woofer - 4 x 6" (100 x 160 mm). - Woofer Cone Material - Polypropylene. - Woofer Surround Material - Polyester Foam. They use polypropylene cones with tough, ribbed, UV-treated surrounds for precise linear excursion and reliability.
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