@kw6 - For commercial products take a look at KLE Innovations products
For DIY try these...
http://image99.net/blog/files/category-002ahelix-speaker-cable.html
Having said that - i would have to ask what type of amp are you driving them with - tube or SS?
Cables with a higher capacitance are not as much an issue for Tube amps as they might be for SS
Both cables above have low capacitance and inductance compared to most other cables
Also take a look at Mad Scientist and ask them for their specs
Regards - Steve
For DIY try these...
http://image99.net/blog/files/category-002ahelix-speaker-cable.html
Having said that - i would have to ask what type of amp are you driving them with - tube or SS?
Cables with a higher capacitance are not as much an issue for Tube amps as they might be for SS
Both cables above have low capacitance and inductance compared to most other cables
Also take a look at Mad Scientist and ask them for their specs
Regards - Steve