Bass Port Master Dlya Rascheta Fazoinvertora
A bass reflex system (also known as a ported, vented box or reflex port) is a type of loudspeaker enclosure that uses a port (hole) or vent cut into the cabinet and a section of tubing or pipe affixed to the port. This port enables the sound from the rear side of the diaphragm to increase the efficiency of the system at low frequencies as compared to a typical sealed- or closed-box loudspeaker. Act discharging boats, barks, or vessels from going to the Bass, or furnishing supplys thereto. Edinburgh, February 28. (Edinburgh: Printed by the heirs and successors of Andrew Anderson, Printer to their most excellent Majesties, Anno Dom. 1694), by Scotland. Ships and boats mod 1.6.4.