Re-wire of speakers to get more Warmth and resolve across the band

+1 Jmc and grannyring.
Though I think it could be an interesting project, I would call up Tekton and ask them what they think. They built the speaker and would know more about what a change in wire would do in their speaker.
Bob

Grannyring, I have not heard the Dueland, but, in the past, have rewired my speakers with Neotech. For what the OP Is asking for, warmth, I would include the Neotech copper as an option. I know you have heard both, so in your opinion, the Dueland is actually warmer?

I was once getting beat up by a Seas XL tweeter and Class D amp, and found Audioquest Type 8 solved the issue, but added a tint on everything. Maybe Audioquest Type 4 bulk? At the end of the road I changed amps, and went back to more open cables, so agree using cables as tone controls is a dead end, but doesn't cost much in this case to rewire the speaker, and should be fun to see the difference.

No doubt the Duelund wire is warmer and more importantly, more open and natural sounding while doing it. Both are very good and would work nicely however.

Thanks for the suggestions guys, I will call Eric at Tekton to get his input too.

I would leave internal wiring alone... Tekton know what they are doing and would never skip investing on the wire if it made a difference.  Just like all reputable speaker manufacturers.