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Join Date: Oct 2003
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as designed, you have about 4.25 or so cubic feet internal volume and a tuning point of around 19-20hz.
increasing the port height to 2.0" will increase the tuning point by about 1hz to 20-21hz, but will cut down on air speed in the port quite a bit (from about 26m/s to about 19m/s 500 watts at 20hz).
either way will be ok. I'd probably go for the slightly larger port, but that's a judgment call that could go either way.