DIY Audio & Video Calculators

DIY Audio & Video separates box volumes, driver displacement, ports, crossovers and filters. Its enclosure designer takes manufacturer Vas, Fs and Qts; the displayed units include ft³ and Hz with volume-unit selection. Sealed-box calculation also needs target system Qtc, while ported routes use effective cone diameter for port sizing and can accept or derive tuning frequency Fb. Buttons distinguish sealed, ported and Butterworth B4 outputs, with links to dimensions and driver-displacement tools. The help uses Qtc≈0.707 for a smooth roll-off and warns that a higher-Q response can exceed driver excursion at high volume. Keep driver parameters and the chosen enclosure model with the result.