ok so i picked up this sony fh-3 yesterday nice box it is actually up for sale in the sale section.well i took the speaker grills off to see if i could replace the frial breaking square foam pads on them.i was looking and rememberd i have a pair of wireless advent'si have been keeping around for this reason.they are 4 ohm and i can fit the woofers and tweets with minimal mods to the cabs.do you think it would sound better with the bigger woofs or would i be ruining a good thing here.btw there is nothing wrong with the current speakers.