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The Sundown Audio ZV7 is a 12-inch dual-voice-coil car subwoofer rated at 3500W RMS, built for extreme output and deep, low tuning. It sits above the M and X v.4 lines in Sundown's 2025 ultra-high-excursion range and uses the company's patented "mega-platform" frame with a quad-stacked 265mm motor and a 3.3-inch round-wire aluminum voice coil. The motor's force factor is about 50% higher than the previous Z v.6, and the hyper-extended pole allows over 4 inches of peak-to-peak travel before mechanical bottoming. It suits serious SPL and demo builds with big electrical and enclosure budgets, not casual upgrades; rivals in this class trade some excursion for easier power handling or smaller box needs.
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The Sundown Audio Z v.7 is a 12-inch dual voice coil subwoofer rated for 3500W RMS. It is built on Sundown's patented "mega-platform" frame and is designed for low bass extension in small ported enclosures. It works in the same enclosures commonly used for Sundown's other mega-platform subwoofers.
The motor uses a quad-stacked magnet structure 265mm (10.43") in diameter and 100mm (3.94") tall. It has a hyper-extended pole and allows over 4" peak-to-peak travel before mechanical bottom. The motor force factor (BL^2/RE) is about 50% higher than the previous Z v.6 series.
The 3.3" voice coil is a 4-layer round wire aluminum coil wound on a thick aluminum former. Cooling features include an airflow-directing pole cap, six pole OD channels, sixteen gap vents and a cross-drilled, slotted top plate. A 9mm thick magnet ID Faraday ring and a pole-extension inductance sleeve are used to keep inductance linear.
