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beerman_accelerator-pedal.com Unregistered guest | The old thread was archived. http://www.accelerator-pedal.com/ported-box.asp Two big changes: This version calculates a minimum port area based on woofer sweep (Sd*Xmax) and tuning frequency, as opposed to assuming 10 (or 15) square inches per cubic foot. It can design a subwoofer based on parameters. Maximally flat or SQL. SQL dials in a 1.5dB peak for more output while maintaining some sense of sound quality. The SQL boxes are also (marginally) smaller than the maximally flat boxes. |