Blue Jeans Cable recommends coaxial cables for subwoofer, stereo audio, digital audio, etc. They state that, “The most important attributes of a line-level unbalanced audio cable are (1) shielding, and (2) capacitance. Heavy shielding protects audio signals from interference from outside sources. LC-1 Audio Cable uses a heavy double-braid shield, with one bare copper braid laid directly over another for extreme high coverage and high conductivity to ground; this is the identical shield configuration to Canare LV-77S, which tested best in our review of audio cable hum rejection characteristics (LC-1 hadn't been designed yet so wasn't tested at that time). By shrinking the center conductor to 25 AWG and foaming the polyethylene dielectric, we were able to get capacitance down to an extremely low 12.2 pF/ft, much better than LV-77S at 21 pF/ft. Capacitance can be important, particularly in long cable runs, because it contributes to rolloff of higher frequencies.”
What's better, one conductor or two conductors for an RCA interconnect?
I have a somewhat nice RCA analogue interconnect with one conductor, referred to as a coaxial Cable I guess. But I see higher end RCA cables with two conductors and ground wire. Which is better?
Is better detail provided when connections are made with two conductors?