Yes, its pretty easy
1. remove grill - slide upwards.
2.Undo the screws that hold the port in place, no need to unscrew the tweeter or the center screw above the tweeter.
3 unclip the wires from the back of the tweeter, this allows the whole top section to come out.
4 unscrew the screws holding the woofers in, and ease forward the woofer.
5 unclip wires
6 replace with new woofer reconnect wires. screw in place
7 re connect tweeter wires and push back into place the port section, in tucks in behind the woofer.
8 put all screws back in loose so that they all line up THEN tighten them up.
9 replace grill.
10 you will need a torx screw driver not sure what size, do not use an electric screwdriver/drill, take care when unscrewing screws around speakers !!!
this is a bit of a condensed explianation but it should point you down the right path.
Darren