Or Morel 6" Supreme... (DX45 is a 6")...
The current Seas 8" full ranges are near the best
currently available, if you have to have an 8" FR,
and will work well in about 1cuft/28L sealed.
rgds, sreten.
The OP is lost (something to learn...) just adding a woofer would serve it right. The FAST a la Lowther.