klipsch cornwall iv upgraded crossovers

I own a pair of cornwalls, amazing speakers they are paired with MC452 power  and a MC 70 tube pre.I play cds only on a yamaha C2100. My question is I hear people talking about upgrades to the crossovers on the corns  and softening the horns with  sound tape . Do any of those changes work,one or the other and do they make it worthwhile. Would like input from anyone who has tried the upgrades and who they used


@wrm57 start with this Click here. You are fooling yourself if you think I’m the one being closed minded.  Ive done a ton of blind testing. I make a conscious effort to be as objective as possible when it comes to evaluating gear.  I don’t dismiss something as junk because it’s made in China or is less expensive or because some “expert” said so. I also consider behavioral explanations behind opinions. Do you?  

So, your comparisons of DACs on YT were scientifically controlled blind tests?  You were able to verify that the person making the video properly controlled all variables and your own evaluation was blind and you had enough samples to reach some level of confidence in the results?

I’ve participated in blind tests, including DACs, so I am confident that their are meaningful difference (though not at .05 confidence level), but, that does not mean everything outside of such testing is delusional.  It is unfair to insist on blind testing to prove modifications are efficacious, while insisting that YT videos should be provided by modifiers when there is no evidence (blind testing?) that YT videos can make differences, or lack thereof, evident.

@eoj4952 Check out my Video. Crites has the Xover Cap values online but never measured the Inductors. I changed everything and updated the Xover to include the Inductor Value. It's all in my Video,


Actually never mind, I just found this guys video comparison Dynamat mod on Klipsch. Personally I think it sounded better before, less muffled.  Yes, different speaker but I think I’ve gotten my answer on that particular mod, the difference was actually more pronounced than I was expecting.