Making Jumper Cables for speakers with bi-wire terminals
This is a quick upgrade for speakers with bi-wire terminals. My stereo amp only has one speaker stage (eg: one set of speaker terminals) and my speakers have bi wire inputs (eg: 2 sets of terminals), so I replaced the crude metal washers with a short length of speaker cable to bridge the signal. I am sceptical whether it makes much difference as with most things in hi-fi there is a lot of snake oil, but it was quick and very cheap.
Regarding speaker cable I use Vandame Blue 2.5mm (this is studio quality speaker cable and can be sourced quite cheaply online. Personally I do not see any need to spend more, this is very good quality copper cable with a durable jacket to protect the cable).
To make just take an extra piece of cable, remove the outer protective layer to split the red and blue cables. Then strip the insulation on both ends and fix a banana plug to one and leave the other end bare wire. You could attach a spade terminal if desired (the bare copper will tarnish in time).
Then just connect up, not sure if it sounds any better but it does look better.