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| • Dynamic Balance® polymer/mica composite mineral filled cone is stiff yet lightweight for big sound, little distortion.
• Marine Certified Polk db Series speakers are built tough to withstand the toughest environments so they are perfect for use in boats of all types. • 19mm liquid-cooled silk/polymer composite dome tweeter with neodymium magnet for clear, detailed highs. • Low-mass 2-layer 25mm Kapton voice coil former is lightweight for high sound output. Kapton's high melting temperature (725°F/400°C!) ensures high power handling and kick-butt reliability. • Muscular ABS grilles, computer optimized and based on exclusive MOMO designs. • Durable butyl rubber surround won't fall apart under the stress of extreme temperatures, sunlight or time, for years of the great Polk sound. | • Pole plate heat sink promotes better heat dissipation for superior power handling and reliability.
• Flat spider for faster, longer excursion linear motion. • Flexible woven leads sewn directly into spider for greater reliability. • Rock solid, acoustically inert stamped steel basket finished in rustproof gun metal gray. • Stainless steel mounting hardware. |
