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Is there a formula for calculating the amount of displacement (Vd) needed for a given room size?

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Is there a formula for calculating the amount of displacement (Vd) needed for a given room size?

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This is the same as question #4, but people keep asking so obviously the info in #4 isn’t sufficient. It isn’t possible to create a formula calculating the Vd per a specific cu ft of room, given all the large number of variables involved with these types of installations. Room size alone isn’t that important. The primary considerations are the distance from the listening position to the IB, and the desired output level at the listening position 12) Will any driver work? Most ‘normal’ woofers satisfactory for sub use in sealed or ported designs will be satisfactory. Access the forum for guidance in choosing an appropriate driver. Avoid drivers smaller than 12″ due to the problems associated with trying to move large volumes of air with small cones (aka radiating resistance). 13) Won’t the heat of an attic/humidity of a crawl space harm the driver? If a driver is suitable for use in a car environment, it is usually acceptable for use in an attic. Many drivers designed for home use, are a

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