Obviously, the shorter wires are designed for the purpose of keeping them short, and the OXO close to the speaker.
And of course it would difficult to know how far each user might find best, and any additional wire gets scruched or looped or worse.
However, you can use any length of your favorite speaker wire to place it whatever distance you need, by simply using any number of connection means, to add the length.
B, might have comments on what increasing lengths might do to the signal. I would have to assume that there may be consequence to going too long.
