Klipsch Cornwall IV

You will be shocked-and I do not use that term lightly- by the improvement you will have by adding an external DAC like an Ares.
You may even find you can spend some time back with your CDs.
Try some XRCDs by JVC. Best sound I've found on digital.

From past experience with other speakers that I upgraded myself, it is worthwhile sonically to replace the binding posts even if they aren't flimsy. I'm sure that they're brass, and you'll be happier with solid copper. There are copper binding posts that aren't very expensive.  

@roxy54 ,  I finished that today. Wow.  I should've just done it when I had the speakers open and apart.  There was very little of the Audioquest wire they used to wire them to the posts available to strip and solder.  

My soldering iron is taking a few months off!

I have to do my binding posts as well.  I am sure I will have to pull the woofers one more time because as I recall, there is very little service loop so you cannot do it from the rear.  An extra inch or two of wire would have made it possible.   I will get to it eventually.   So @jbhiller , have you got 50+ hours on them since the crossover upgrades?

I don't get Klipsch Heritage line. Some believe the stock speakers just fine, others have need to modify. As for myself, I'm in the mod camp, how anyone can put up with their timbre anomalies is beyond me (other issues I won't go into, timbre by far the worst). Klipsch should listen to the modders, institute some of those upgrades in factory versions. Most of these mods wouldn't require steep price increases, and put Klipsch in higher echelon of loudspeakers. Heritage line has some real inherent advantages, not taking advantage of them in stock form. Haven't heard the latest Heritage models, so I can't comment on whether Klipsch improving, but continuing mods lead to same conclusion.

As for the Klipsch purist. Do you believe the modders are experiencing real improvements, or is it delusion?