I finally got round to testing the box out in the car and this is my opinion. It plays the lows extremely well, goes deep and drops deep no doubt but I'm missing the high notes. It seems to play all low notes very well but higher notes are lacking, Its seems like a one note box but I have to call it a proper dropper which is not a bad thing. Maybe I should have tuned to 30hz like some of you said but being my 1st build, I could have done that but wanted to experiment on a low tuned box.
Im using the pioneer premier woofers but want to ask anyone what subs could I replace these with that would be better even more on the lows and what subs are more suited for LOW tuned boxes. I bought these new but not a problem as I have another car I can use them in. I want to keep the box I just built but wana put some better low tuned subs in ???