Duelund internal speaker wire?

I respect audioman58, but could not disagree more. The Duelund wire is naturally toned and beautifully resolving....not in the traditional Hifi or high end manner however. It does not shout out ....pay attention to me! Rather it allows the listener to engage in the music as it unfolds unforced and natural.

I have used it inside many speakers with great results. Fantastic results. The 12gauge on bass drivers, 16 gauge on mid drivers and 20 gauge on the tweeters.

Yes, I build and sell a line of cables using Duelund bulk wire ranging from usb cables to power cords. Duelund is Easily the best value I have ever heard in cabling.

If you are looking for razor sharp leading edges and lighting fast sonics, if these are your sonic priorities, then you may be better served elsewhere.

If your sonic priorities are perfect tone, realism and a smooth unforced flow, then Duelund is for you.

I agree with what grannyring is saying. In one of my setups i  have an old tannoy system 1200 for which we used internal duelund silver along with duelund xover parts.

Not sure which spk internal cable you wish to upgrade but the main question you should be asking is what you would like to achieve with this upgrade.
All the best.
cheers

+2 with Grannyring. I've used 12ga Duelund tinned copper from my MC30's to the external crossovers solderless copper lugs and 12ga to the woofer plus 16ga to the tweeters on the Tannoy MG HPD315's and find the sound quality to be everything Grannyring has described. I also modified the speaker binding posts to eliminate solder joints by using binding posts to only clamp internal wires to those from the crossovers. 

I must say I've never understood upgrades to speaker cables and ignoring internal speaker wiring.