really bright sounding speaker cables

I own a high end audio store and sold Dyn for years. I think the c-4 are beautiful. If you study the speaker industry the Danish build a a great product.For years I have studied interconnects and cable. Room design and amplifiers make a huge difference.Send me a full list of what you have for equipment and I might loan you a demo pair of analysis cables?? I live in Utah and there is a great cable builder there and I have spent time getting educated.
To answer your question Analysis silver is much brighter than antiwire. I feel that it is only one of your problems!

Maybe Nordost can help a bit...produced quite a lean bass in my system...

Nordost Red Dawn are bright, I would think that you would not like them with the Dyn's unless your listening room is filled with cotton balls. (I used to have C1, Special 25s and like nordost speaker cables). I would recommend the Heimdal or Frey, you get the top energy without the brightness, better extension with good natural timber. I use the frey with my verity's but the heimdal is about it's equal at a better price.