Apocalypse Series The Apocalypse series not only stands out from the crowd, it gives you more speaker for your money. Every model comes loaded with standard features like bolt-down spider, high-energy magnetic flux and self-cooling technologies. Each sub is geared toward competitors competing in stock vehicles in USACi. NSPL, MECA, EMMA, Db Drag Street A, B, C & Max. The Apocalypse series is an excellent choice for a competitor on a smaller budget. Apocalypse Series