are you talking about the stock speakers? if so after all these years it probably wouldn't hurt to get a new pair. the first thing i did when i got my coupe was switch out the rear speakers and door speakers. any speakers you hold in the middle like you described is going to sound better the cone isn't travelling as much thus decreasing the vibration which causes the rattling noise. you probably need to get some better speakers. try ubid.com, ikesound.com, thezeb.com, for like 100 bucks you can get a dectn pair shipped to you.