ok i got a box and its best bass note is 40hz so im asuming its tuned to 40hz anyway i like and play rep yo city alot and it onli sounds good on the high part and the middle part but wen i goes for the low one it just cuts of and doesnt play anthin till the high bass note come so is it posible that i can tune from 40hz down to 26-30 hz and how ? thanks