I agree with Thinkat on something you should hear for yourself. Bi-wiring does open up the speakers and defines the output through the speakers. I use Revel Studios and they are bi-wired from the amp. I had some old non bi-wire I thought I would just try once and I did, that lasted about 30 minutes and the bi-wire went back on. You will notice an improvement (my view point)only.
Dave
Dave