ok, heres the deal. i am thinking of replacing the 15" speaker in my 1x5 because it is currently a 4 ohm speaker and i would rather 8. also, it is kinda old as well. when i go to the web sites of several speaker manufacturers (eg - eminence) it says that their 15" speakers have frequency responce of say 40hz-4kz. i play a five string, and i am told that the b sting i about 25/30hz? does this meen playing the b string through a 15" speaker that only goes down to 40hz will harm the speaker?