Jmon,
Will you be going from unbalanced outputs of a preamp to the inputs of the DX-38? And then from the balanced outs into an unbalanced input of a power amp? For the preamp outs to the DX-38 inputs these cables from Monoprice work great and they're wired properly:
http://www.monoprice.com/product?p_id=4776 (other lengths are available)
For the DX-38s outs to unbalanced in, that's going to be a little less straightforward.