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Re: Cable direction my oh my
> While the following quote is not about analog signals on a cable, this
> stereophile article shows measurable differences in jitter from an
> spdif source depending on the direction of the cable:
> 'Changing the direction of the digital interconnect between the
> transport and the jitter analyzer.=20
Couldn't resist chipping in on this one,
I looked up that link, very interesting and informative.
...but it goes on to say
"With a good source, cable direction didn't make a difference in the
measurable jitter (fig.10). This suggests that the SV-3700—or any
poor-quality transmitter—reacts with the cable's impedance to create
jitter-inducing reflections in the interface. The directionality was
caused by differences in the way the two RCA plugs were soldered to the
cable; any bumps or discontinuities in the solder or RCA plug will cause a
change in the characteristic impedance, which will cause higher-amplitude
reflections in one direction than in the other. These reflections set up
dynamically changing standing waves in the interface, introducing jitter
the embedded clock. "
which means that they don't think it matters which way the cable goes!
One directional cables? Well I'll believe it just as soon as I hear it.