Instead of bi-wiring, why not replace the cheap brass jumpers with a quality cable jumper. You could experiment with different wires or just go with a short (6") pair of the Audience cables to use as jumpers.
Tannoy Speakers & Bi-wiring
I have a pair of Tannoy Canterbury speakers using Atma-Sphere amps. Currently I am using single wire (audience AU24) and the supplied brass jumper. Wondering what the experience of any Tannoy users out there is in bi-wiring and what kind of wires you have used. I'm thinking about trying this with a budget of about $1,000 used so really can't get into the mega expensive cables. Really curious.