|Originally posted by tsteves|
I use belden 1694a rg6 coax with canare rca's for digital audio and subwoofer. I like it, but am starting to experiment with some belden 89259 for coax and subwoofer. I probably spend too much time at audioasylum. It just seems like rg6 with 18awg center conductor may have too much skin effect. It seems like the 89259 may give a wider soundstage as a digital interconnect. I still have to experiment a bit more. I realize it seems like a doubtful proposition that skin effect or dialectric would cause sound differences with coax digital cables. Maybe my receiver is susceptible to jitter.
While your efforts to improve your audio system's performance are admirable, experimenting with different types of RG-6 to achieve it are going to be a fairly useless endeavor. Skin effect won't become a significant issue unless you are either:
A) sending your signal down several hundred feet of wire, in which case DC resistance will be a far more serious issue than high frequency impedance problems.
B) you're running signals down the wire that are into the 2 gigahertz and higher range. I doubt you qualify for either predicament, hence, the quest for a better performing RG-6 won't reveal anything different.
Also, coaxial digital isn't subject to the same problems with jitter that optical is. I doubt very much that your reciever is having the "jitters". The quality of the digital circuitry inside, or the decoder, however, could certainly be an issue. Your best bet to significantly improve your soundstage is room treatment and careful speaker placement IMHO.