So this past weekend I went out and bought a whole new sound system for the miata, Infinity speaker REF6032CF, kenwood head unit, mtx sub 10" TN10-04, and mtx amp TN200/2 . and got it installed at besy buy I dont know if im asking to much from them or not but when i turn it up to a some what decent level i hear rattling out of a speaker any ideas.