Tuning my system towards a darker tone

Well, really depends. Going only on the measurements, it does seem you can reduce the treble quite a bit by using the toe-in.

Obviously, don't make them suck. :)

@three_easy_payments

Maybe they should not cross at all.  They could point straight across the room.

I just found the measurements. Based on this:

https://www.stereophile.com/content/devore-fidelity-orangutan-o93-loudspeaker-measurements

I'd say your tuning is going to be simple:  Turn the speakers so the tweets are not on-axis of your head.

Best,

Erik

1. Thick curtains, floor coverings, including between and behind your speakers, as well as see if you can convince her to try GIK Art Panels. You can experiment non-destructively and free by using bedding here, see if you like the results.

https://www.gikacoustics.com/product-category/acoustic-art-panels/

Don’t forget the ceiling!

2. Consider actual tone controls, like Schiit:

https://www.schiit.com/products/loki

or, if you use Roon, use it’s great parametric EQ.

3. Next, talk to DeVore, but I believe they use Clarity Caps? If so, replace the tweeter caps with the CSA instead of CMR line. They might even have a tweeter mod like a padding resistor idea.

4. Point your speakers so they are flat to the wall behind them.

5. Wireworld’s Eclipse line is pretty dark, especially speaker cables.

Of these, the place to start are turning the speakers, room acoustics and tone controls. Trying to fix these up with new cables is, IMHO, madness. If your religion forbids tone controls, the next most effective idea is a speaker mod (#3, above).