The past few weeks I've been working on designs for a dual 12" sub enclosure. Using Winisd Pro I came up with a good design that would allow for my 12" subs to reach about -3db at around 16Hz. With an fs=29.1 Hz, I designed the box to be ported and tuned for around 18Hz. (without ports it was around -3db at 28Hz)
My design called for around 6ft^3 internall for each sub, with a single port with 4" D and 10" L. Basically a massive 4'x2'x2' box with a divider in the middle.
Now, this past weekend I built the box without adding the ports as they haven't arrived yet. But, after testing the subs with a few songs it sounded amazing. It hit very deep with plenty of output. It played notes my Bic F12 was oblivious to.
I'm at a point right now that I'm afraid to add the ports for fear of ruining this quality sound, so I am here for advice. Are my fears unfounded? Can I trust my winisd design or is there something that can possibly be miscalculated?