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  1. How to calculate Precision Port in boxnotes?

    DIY Subwoofers - General Discussion
    Guys, How do you calculate a full length dual-flared precision port in Boxnotes? Do you simply select the option for "dual flare" and then punch in 17" for the length? Also, what would I punch in for a 15" Tempest-X for volume? And lastly, what is a good way to calculate interior bracing...
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