- 25 Posts. Joined 5/2012
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25hz is too high of a tune for that size enclosure, theres a big peak at the tuning frequency. I would go with at least a 20hz tune.
Roughly 245 liters (8.652cu ft), this accounts for enclosure size (3/4"), driver, bracing, and port.
18hz tune and a 18hz highpass
2.5 x 14 x 28.5" port