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Message: <blockquote data-quote="Doxquzme" data-source="post: 8877585" data-attributes="member: 689267">The LC2i starts it's 18 db 33hz roll off at 33hz  so those two boxes that are tuned to 37 hz would be fine. If you go lower in frequency, that tuning will require a bigger box as the port gets larger too, takes up displacement, etc. There is very little music program below 35 hz and dance music generally speaker-ing, pops at around 40-65hz, not much with anything lower.You may need to be close to 5.5 cu ft for tuning a 15" down to the 23hz point (3db below that kikers 26 hz fs) as the port takes up over twice the area of those other boxes. A .8 cu ft in a5.5 cu ft box with a port of 3x14x42, the port alone takes up over 1.1 cu ft.If you have the room, go for it. I would advise that the 35-37 hz tuning frequency for the electronic music you listened to is not better served by a lower tuned box.</blockquote>

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