Nakamichi Components

I have a set of components as above and have had them for a year and a bit. Now have a decent head unit I thought I would connect them up. They work fine, however the 6" bits sound terrible.The tweeters have amazing clarity but the 6" ones seem very fuzzy almost (Couldn't think of a better way of putting it). The was no + or - sign, but there was however a red dot! I assumed that is the plus, is that wrong and could it be affecting the 6" speaker?

P.S. They are running of the head unit amp at the moment!

Why dont u just switch them and see if there is a difference?

I have been waiting for the weatherr to clear up! Bloody rain!

Seem to have fixed it, god knows how as I didn't change anything!