PMingI just redid the first enclosure to see how close I was. I came up with 1.6 per chamber with a 62.5 tuning(no sub displacement).
However, you say the enclosure is 14.5 tall but the port is only 12.5? Is that accurate? If so, the numbers could change based on the thickness of material used.
i used the12volt box calculator, idk how accurate it is with the chambered ports.I still get 62(ish) on the first enclosure with the new measurements.