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


No, just no. I’m not wrapping my horns or doing any other ridiculous tweaks. I think the 4th gen Heritage lineup sounds great from the factory, the last thing I’m doing is trusting some diy audio fanboys over the engineers at Klipsch that have been refining these designs since the 50’s. If the horns needed dampening they would have addressed it by now.

FYI, I exchanged emails with Don (he’s awesome, BTW), and in addition to the Dynamat on the horns, the crossover mod basically consists of replacing the cheap Chinese caps with VCap ODAMs (which I know Don has made clear he’s a fan of) and the sand resistor.

He also suggested putting some sort of damping material on the inside base of the speaker.

Thought people would want to know :)

@perkadin I mean, you may not like the DIY thing, but you can clearly hear the resonance in the horn. That horn is agitated as the sound waves cascade out of the horn. Now, is that enough to affect the sound? No idea. You'd need to test and/or listen.

Now, will the dampening make a difference? An improvement? Are you over-dampening the horns with the Dynamat? Not sure. You'd need to test and/or listen.

But saying that if the Cornwalls needed it, the engineers would have put something different than the $5 Chinese MKP caps in the Cornwall crossover would be a silly point. They're cheap caps in speakers that retail for 6 grand. That's something bean counters do, not engineers.

Modifications mean “tuning” the component to your taste and to work better with your other components.  That means that any particular change may not be an improvement.  Make sure that any change can be reversed.  Damping horns is something easily done and reversed.  Likewise, putting thin felt strips in the horn opening can be tried and reversed.  If you are going with crossover modifications, make sure that the modifier gives you back the old parts so you or someone else can undo the change.

The biggest change, most probably for the better, would be to find a suitable tube amplifier.  Take your time hearing alternatives. I know it is a matter of taste and system synergy, but, I find the MC 275 mentioned as a suggestion to be less than mediocre, particularly given the price.  There are many low power tube amps that would work well with these speakers.