OK......I have everything working, the holes cut out and my subs back in. I must say that vented sounds MUCH better than sealed. However, I think there may be a problem. I did not know how to figure in the port length and volume of the port etc.. into the equation. WinISD did it for me, however the PVC pipe was a diameter of 2.4 inches, with a flow area of 2 inches. Now, this factors into the equation differently in WinISD. If I have a bigger port diameter (which I calculated it for - I now have 2 2.4 inch ports that are 8.5 inches long. I fear that this may be too long - hence tuning my box lower than I wanted to, at about 32.something hertz, when I want it around 35.
1) With most rap music, what is the lowest note that is hit? Is there really any sound below 30 hertz that is conventionally played?
2) Should I start lobbing off 1 inch chunks of PVC pipe?
Now, this is where I have a new question. What if I cut each indivicual port to a different length - like if WinISD wants it to be 6.5 inches long, and I made 1 port 7 inches long, and the other 6 inches long for tuning frequencies of 33 and 35 hertz, respectively. What effect would this have on the sound quality? Has anyone ever tried this before?