The speakers in your Honda Civic are of average quality---being comprised of a speaker coil and a paper cone to deliver the sound. When they eventually fail, you will need to replace them if you want to use your car's stereo system. Replacement speakers can be purchased from a variety of aftermarket suppliers. However, you can also buy direct factory replacement speakers from Honda. Whatever speakers you decide on, they must be made for your model year of Civic.
Wedge the tip of a flat tip screwdriver under the speaker trim covers on your Civic
Pry the speaker cover off.
Remove the screws holding your speakers in place using a cross point screwdriver.
Pull the speaker assembly out of its location.
Unplug the speaker from the factory wiring harness.
Plug the factory wiring harness into the new speakers.
Slide the new speakers into the speaker mounting brackets you removed the old speakers from and secure the new speakers with the factory mounting screws.
Snap the speaker trim covers back over the speakers.