I have a 26" box about with two 10" sony 1200W subwoofers powered by an 800W sony 2ch amp and you can get a nice massage in all 4 seats and hear me coming from the end of my street.
Good luck with your search.
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Top Swap in Progress
Ram Air Intake // ZZP 180* Drilled Tstat // U-Bend Delete // Resonator Delete // GM STB // Debadged // Voltage Booster // NGK TR 55's // Bosh 8MM Wires // Flipped Dog Bones // StreetScene Grilles // Interior Accents Painted // 18" American Racing Casino's // Painted Exhaust Tips // Painted Calipers // JVC Deck // GrandPrix Windshield Decal // Front & Rear Fascia's Black // ZZP Decals //