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Old 19th September 2008, 05:46 AM   #21
GM is offline GM  United States
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I've never experimented with an active passive, but to my way of thinking, a passive is a passive is a passive, so input the 12" as a passive, i.e. with only its Vas and Fs, then either calc the added mass if required to get the desired response or adjust it experimentally.

Since the 'passive' is a mechanical representation of a long cylindrical vent, the cab design will be based on the 10".

GM
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