P Floding;143102 Wrote: > My initial guess is that running multiple ground paths alters the ground > reference noise available at the SPDIF receiver and/or transmitter.
Plausible. I'd guess that if there's a potential difference (DC or AC or both) between the two components, and there'a only the one (S/PDIF coax) copper interconnect between the two, its ground will end up doing the job of equalizing that potential. Since in single-ended interconnects, the signal is the difference between signal and that one ground/shield conductor, if the ground reference is wobbling around due to this noise, the relative signal between the conductor's signal and ground conductors would presumably be wobbling about comparably. What I'd try would be: - Give non-conductive (Toslink) S/PDIF a try, with no other connections between the devices. I often find Toslink obviates noise problems, yet has less ability to communicate the compelling little details somehow -- so it can be a tough choice. YM may of course V. The following two are what I'd try with something in a proper metal box, unlike the SB3 -- I invite you to innovate to see how close you can get with an SB3... - With no signal connections between the two devices, if you have a voltmeter lying about, see what the DC and AC voltages between the two are. That'll just be interesting to hear about. - Try connecting a pretty serious hunk of wire (whatever you use for house electrical wiring -- some 12ga Romex would be what we use in the States) between good grounded chassis screws on the two devices, then see if a copper-connected S/PDIF link is less confused sounding. ...but really, I dunno -- maybe wires connected between the analog-output RCA ground sleeves is as close as you'll get to the above piece of wire with an SB3, and you stumbled on a sort-of-solution there. -- jbm0 ------------------------------------------------------------------------ jbm0's Profile: http://forums.slimdevices.com/member.php?userid=3949 View this thread: http://forums.slimdevices.com/showthread.php?t=28307 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
