klipsch cornwall iv upgraded crossovers

Is there a link to what exactly Don Sachs did?

I did an Internet search and couldn't find anything.

Thx!

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.

https://forum.audiogon.com/posts/2350554

I’m not sure why one would consider posting frequency response curves as the work of a charlatan...it’s literally measured data. I mean, I’m not making a purchasing decision based solely off data, but hey...that’s just me.

For me, blind tests sound cool...but like...I only have so much time in the day. I’m cool with DSP, not spending boatloads on cables, and focusing on engineering. Is it psychoacoustics if I like some thing better than another? Possible. But I’m gonna do what I want, and would love to blind test stuff some day...but I’m not upending my life for it. Too much crap  to do.

And if a guy who builds/designs stereo equipment for a living says a cap is crap, I’m going to believe them. Also, I would tend to trust caps with different (exotic) materials with tighter manufacturing tolerances over ones made in China. FYI, I have a set of Genesis Technologies monitors and those have RelCaps in the crossover. The same caps Audio Research uses in a lot of their equipment. Are those two companies full of charlatans? I’d say no, but everyone has an opinion.

Also, those Genesis Technologies monitors sound damn fantastic (for a number of different reasons). Oh, and my Vandersteen high pass filters have Teflon caps in them. EIther RelCaps or Mundorf, I can’t remember off hand.

@larryi funny enough, I was at the local Klipsch Heritage dealer in town and he swears the Cornwalls sound better with solid state gear. He has his powered by a rebuild/refurbished Marantz 2330 receiver. Different strokes for different folks (I mean, I love my ProAcs with an SET amp), but I would have thought tubes would have been the ticket (although Marantz is known for their warm house sound).