Belden 8451 is the type of cable I used to use for wiring studios and many projects including the sound system at the Hard Rock Hotel. It is also the cable I originally used with the telescoping technique I mentioned above, for unbalanced circuits. Since it has 2 conductors plus a shield, I would use the red conductor for signal, black for ground, and shield drain wire connected at one end only, tied at that end with the black conductor. Note that I used this cable back in the 70's and early 80's before the preponderance of 'audiophile' cables which many claimed sounded better in professional use. The 8451 IMO was an OK cable but had a fair amount of capacitance compared to some of the larger diameter cables. This would seem to indicate that this cable would work better with lower source impedances than it would with higher impedances, where the capacitance might come more into play. 8451 is a fairly thin cable but extremely easy to work with, and especially with the foil shield and separate drain wire. This also led to it's popularity for studio wiring where the wiring harnesses can get pretty massive. Many of the audiophile type balanced cables were much much harder to work with. I must admit that I haven't personally compared 8451 with 'audiophile' cables in professional applications, but always assumed that the audiophile cables could sound better in many situations as I've discovered they often do in hi-fi systems. . Once again, in a professional environment, most cables are low impedance and balanced which would seem to me to lessen their effect on the signal they pass.