The subwoofer’s low-heat design is vented through the “chimney,” providing a constant flow of fresh air while always protecting the system from harsh weather and water. The flared chimney port system, combined with a high-intensity magnet structure, thumps out deep, musical bass without chuffing or extraneous vibration. Bury the subwoofer nearby, or install it under your decking, and rock the very ground beneath your feet!