Alright guys so I am building a box that is going in the hatch area of my 2001 VW Golf. The box will or does measure 39 wide, 20.5 tall and 19 deep with the subs and port facing up. I will be using 2 AB xfl 15s and box gross appears to be 7.22 of space. I deduct about .5 for sub displacement and another .2 in bracing so that gives me about 6.5 feet before port. I am planning to use 2 6in aeros but my dilemna is not know how long to run them.
Torres box calculator states they should be 17 inches long and will give me a tune at 34 hertz. Port area shows it to be at 10 inches. The ports will be inside the box FYI.
Does this sound about right to you box gurus? Building boxes and tuning is my greatest weakness in car audio and your input would be greatly appreciated.