Klipsch Cornwall IV

If I dropped over $6k on speakers, they had better sound pretty damn good stock.  Why anyone would spend all that money and then plan all those mods? Seems like you might be happier with a different speaker to begin with...maybe $6,000 isn't a lot of money to some people.  :-)

$6K is enough money to that I would be suddenly single if I actually spent it. And yes, @chuke076 , if I did ever drop this much on speakers, I would expect to fart around with toe-in and sucb but not actually modify any hardware. Then again, for some that's part of the fun. I get it. I'm slowly rebuilding an ancient set of Coral speakers just for fun. But those are free.

I wanted Cornwalls for my living/HT room, but I had to settle for Heresy IV's.  First world problems.  Alas, the Revel F35s sounded better for HT, so the Heresy IV's went to my office and I'm really liking them in that small (12x10) space.  I looked for used Fortes or Cornwalls for a few months before pulling the trigger on the IVs. I've also got a Mac MA5200 driving older Totem Rainmakers in my office, so something's got to go.

@larbredor , 

Sorry for the slow response.  I don't get updates properly on forum threads anymore.  

If you want to upgrade the crossovers on the Cornwall IV, here's your parts list: 

All of the below *2 (2 speakers): 

2.7uF

2.2uF

6.8uF

1.5uF

4uF

8ohm/8R resistor (to replace that sand cast guy)

I used VCap ODAM caps and Path Audio resistors. Don Sachs and I both used the same parts I think and we both landed on 10w Path Audio resistors. 

I also changed the binding posts on the rear as I found the previous ones fickle. 

Let me know if you have questions, etc. 

PS @larbredor , I didn't swap out that massive 60uF poly cap linked to the woofer.  That would be (a) insanely pricey; and (b) very tricky to enigineer for me. I would have to fasten it off the PCB as it would be too big. 

Don Sachs was of the opinion that this cap would make less difference. I'd agree but qualified on the fact that I'm not an engineer.  I was also more after cleaning up the mids and highs on this loudspeaker.

I have been tempted to figure out the values of the inductors and swap those out for better quality too. However, I keep thinking that the speakers were voiced with those inductors and I don't have the know how or patience to learn how to measure and deal with what inductors do in crossover networks.  I understand it theoretically and that's all. 

Best of luck. I've never questioned my modification to this loudspeaker. I would do it again in a heartbeat.