Wow... I just installed installed the capacitors on my klf-30's. Even though I havent broken them in long enough yet, the sound is MUCH better in my opinion. The tweeters seem much more controlled. It used to be very bright and would hurt my ears, but now i can listen to them for hours! It seems to have cleaned up my bass as well. I would recommend this to anyone. Bob sent the rebuild kit next day with priority shipping and it came very fast. The schematic was also had some instructions for simplicity.