Hello.....the capacitors are the last item that can stop your speakers/system from sounding its best. I recently replaced all the capacitors on my Volti Audio crossovers, and the results are much better than the words I am using to describe the sound.....they sound wonderful. Of course, you have to know what a very good capacitor is. After months of getting my knowledge up to par, I purchase Jantzen Audio Superior-Z capacitors from Parts Express. These are very good, well balanced capacitors. Swapping the capacitors out for new ones may seem a bit daunting at first, but take your time, it really is easy. There are a bunch of things we can do to improve our systems, with out spending a boatload of cash, and this is one of the first you should consider. Certainly something to be done before the merry-go round of amps/preamps is considered.