Bi-wiring does nothing except changing the impedence the amplifier sees by a small amount. It is impossible for it to impact imaging, which is the off-axis response interaction between the speakers, it is impossible to alter the off-axis response relative to the on-axis.
To Bi Wire or not to Bi Wire that is the question?
Just brought home a new pair of KEF R3 bookshelf speakers. This is my first pair of serious speakers. So far I'm pretty happy, but I'm still breaking them in. After listening for a while I decided to research the bi wire option. I did a bunch of reading on the subject, the opinion seems to be 50 /50, so I decided to try it for myself. Immediately I heard a difference, the mid range was more pronounced and the low frequencies were deeper and tighter. I'm not sure about the high frequencies, they were pretty good to begin with.To make sure I wasn't imagining this, I asked my wife to listen, she said it sounded richer (her words). I only used 12 awg wire I had laying around, but if I like this better, I'll invest in some money in more serious cable. I thought I would put this out there and see what other peoples experiences were.