Ker,
Any Naim dealer should be able to fix your cables for biwiring. The way it is done is to attach about a six inch addition to your exsisting cable. Where the addition meets the original cable it is soldered together with bananas (or whatever). The remaining end of the 6" piece has a pair of bananas fixed to it. You have basically "jumped" from terminal to terminal with the same wire. I believe you will be able to find much discussion of this over at Naim-Audio.com
Any Naim dealer should be able to fix your cables for biwiring. The way it is done is to attach about a six inch addition to your exsisting cable. Where the addition meets the original cable it is soldered together with bananas (or whatever). The remaining end of the 6" piece has a pair of bananas fixed to it. You have basically "jumped" from terminal to terminal with the same wire. I believe you will be able to find much discussion of this over at Naim-Audio.com