Trent do yourself a favor and follow the instructions in your speaker owners manual. REMOVE jumpers when bi-wiring,
that is the way your bi-wire speaker was designed with seperate treble and bass crossover circuits. Jumpers are used for single wire use only, and connect the crossovers together.
As some have stated, stock jumpers used when single wired can be replaced with short higher quality cable jumpers that may slightly improve sound, but this is not the same as bi-wiring. Bi-wiring will improve sound more than upgrading jumpers, but it is a much more expensive proceedure.
Although there is an improvement in sound with bi-wire in speakers properly designed for bi-wire, it may not be worth the extra cost to some people. Also two pairs of $250 speaker cables for bi-wire may not sound as good as a single $500 pair to you, try some from Cable Co library and see for yourself in your own system.....as I have done many times.
For simplified explanation/diagrams of bi-wiring here is one link, there are many on the internet if you search:
www.home-cinema-guide.co.uk/BiWiring%20Guide/biwire.htm