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Message: <blockquote data-quote="audioholic" data-source="post: 6869618" data-attributes="member: 549629">I dont think this is your freq problem, but you mentioned the subs looking like they were playing out of phase sometimes. Your port mouth (inside the enclosures) is not symmetrical about the subs, is it? Im amazed how many people dont think about this when designing enclosures. The sub mounted closer to the port will unload faster due to less resistance on cone motion, and this difference in resistance between the subs creates the uneven excursion you mentioned seeing. This also creates a situation in which each sub perceives a different interior enclosure volume, thus altering tuning between the two subs in the shared chamber, making over all freq response erratic.I agree I think a baffle board between the two enclosures would be a good first step in troubleshooting this issue.</blockquote>

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