Frankly, the answer is fairly simple. Do you have any previous technical experience working with audio gear, and especially loudspeakers?
Do you have knowledge of exactly how to properly access the internal components of you speakers both mechanically and electrically.?
Have you ever done any wiring removal and reinstall using proper tools and most probably, a soldering iron?
If the answer is YES, and you have any printed support documentation for repairs (which I doubt) then there is a basis for you to undertake the project yourself.
If the answer is NO, then doing anything other than taking the speakers to a professional, could be very risky, possibly ending up with less that the result you are expecting,